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Combined display of all available logs of ReliaWiki. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).
- 15:03, 7 June 2012 Lisa Hacker talk contribs deleted page Characteristics of the Generalized Gamma Distribution (content was: 'As mentioned previously, the generalized gamma distribution includes other distributions as special cases based on the values of the parameters. ::• T…' (and the only contributor was 'Steve Sharp'))
- 15:03, 7 June 2012 Lisa Hacker talk contribs deleted page Characteristics of the Gamma Distributions (content was: 'Some of the specific characteristics of the gamma distribution are the following: For <math>k>1</math> : ::• As <math>T\to 0,\infty </math> , <mat…' (and the only contributor was 'Steve Sharp'))
- 15:02, 7 June 2012 Lisa Hacker talk contribs deleted page A Gamma Distribution Example (content was: 'Twenty four units were reliability tested and the following life test data were obtained: ::<math>\begin{matrix} \text{61} & \text{50} & \text{67} & …' (and the only contributor was 'Steve Sharp'))
- 15:02, 7 June 2012 Lisa Hacker talk contribs deleted page New The Gamma Distribution (content was: 'The gamma distribution is a flexible life distribution model that may offer a good fit to some sets of failure data. It is not, however, widely used as a …' (and the only contributor was 'Steve Sharp'))
- 15:02, 7 June 2012 Lisa Hacker talk contribs deleted page New4 Bounds on Time (content was: 'The bounds around time for a given loglogistic percentile, or unreliability, are estimated by first solving the reliability equation with respect to time,…' (and the only contributor was 'Steve Sharp'))
- 20:44, 6 June 2012 Lisa Hacker talk contribs deleted page Analysis of Right Censored (Suspended) Data (content was: '====Background==== All available data should be considered in the analysis of times-to-failure data. This includes the case when a particular unit in a s…' (and the only contributor was 'Steve Sharp'))
- 20:43, 6 June 2012 Lisa Hacker talk contribs deleted page New Life Data Classification (content was: '= Sections = #Data & Data Types #Analysis of Right Censored (Suspended) Data' (and the only contributor was 'Steve Sharp'))
- 20:42, 6 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter10 (content was: '=Fault Tree Diagrams and System Analysis= BlockSim allows system modeling using both Reliability Block Diagrams (RBDs) and Fault Trees. This chap…' (and the only contributor was 'Nicolette Young'))
- 20:42, 6 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter9 (content was: '=Additional Analyses= ==Throughput Analysis== In the prior sections, we concentrated on failure and repair actions of a system. In doing so, we v…' (and the only contributor was 'Nicolette Young'))
- 20:41, 6 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter8 (content was: '=Repairable Systems Analysis Through Simulation= <br> Having introduced some of the basic theory and terminology for repairable systems in Chapter…' (and the only contributor was 'Nicolette Young'))
- 20:41, 6 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter6 (content was: '=Reliability Importance and Optimized Reliability Allocation (Analytical)= ==Component Reliability Importance== ===Static Reliability Importance==…' (and the only contributor was 'Nicolette Young'))
- 20:40, 6 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter5 (content was: '=Time-Dependent System Reliability (Analytical)= <br> <br> <br> <br> In the previous chapter, different system configuration types were examined, …' (and the only contributor was 'Nicolette Young'))
- 20:40, 6 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter4 (content was: '=RBDs and Analytical System Reliability= <br> An overall system reliability prediction can be made by looking at the reliabilities of the componen…' (and the only contributor was 'Nicolette Young'))
- 20:40, 6 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter1 (content was: '=Introduction= ==Foreword== This reference has been designed to introduce the reader to system reliability, maintainability and throughput concepts and theory. It accompanies ReliaSoft's system reliability and availability analysis so…')
- 20:39, 6 June 2012 Lisa Hacker talk contribs deleted page Example 9 (content was: 'A group of 20 units are put on a life test with the following results. ::<math>\begin{matrix} Number & State & State \\ in State & (F or S) & End…' (and the only contributor was 'Steve Sharp'))
- 20:39, 6 June 2012 Lisa Hacker talk contribs deleted page The Gumbel Failure Rate Function (content was: 'The instantaneous Gumbel failure rate is given by: ::<math>\lambda =\frac{{{e}^{z}}}{\sigma }</math>' (and the only contributor was 'Steve Sharp'))
- 20:39, 6 June 2012 Lisa Hacker talk contribs deleted page Solution to Example 9 (content was: 'Using the data and Eqn. (kapmeier), the following table can be constructed: ::<math>\begin{matrix} State & Number of & Number of & Available & {} & …' (and the only contributor was 'Steve Sharp'))
- 20:39, 6 June 2012 Lisa Hacker talk contribs deleted page Failure Modes Configurations (content was: '==== Series Configuration==== The basic competing failure modes configuration, which has already been discussed, is a series configuration. In a series c…' (and the only contributor was 'Steve Sharp'))
- 20:38, 6 June 2012 Lisa Hacker talk contribs deleted page New8 Example 1 (content was: 'Five turbine blades were tested for crack propagation. The test units are cyclically stressed and inspected every 100,000 cycles for crack length. Failu…' (and the only contributor was 'Steve Sharp'))
- 20:38, 6 June 2012 Lisa Hacker talk contribs deleted page New3 Foreword (content was: 'This reference has been designed to introduce the reader to system reliability, maintainability and throughput concepts and theory. The treatment of the s…' (and the only contributor was 'Steve Sharp'))
- 20:38, 6 June 2012 Lisa Hacker talk contribs deleted page The Lognormal Conditional Reliability (content was: 'The lognormal conditional reliability function is given by: ::<math>R(t|T)=\frac{R(T+t)}{R(T)}=\frac{\int_{\text{ln}(T+t)}^{\infty }\tfrac{1}{{{\sigma }…' (and the only contributor was 'Steve Sharp'))
- 20:34, 6 June 2012 Lisa Hacker talk contribs deleted page Weibull Probability Density Function (content was: '== The Three-Parameter Weibull Distribution == The three-parameter Weibull ''pdf'' is given by: ::<math> f(T)={ \frac{\beta }{\eta }}\left( {\frac{T-\g…' (and the only contributor was 'Steve Sharp'))
- 20:34, 6 June 2012 Lisa Hacker talk contribs deleted page Analysis of Non-Homogeneous Warranty Data (content was: 'In the previous sections and examples it is important to note that the underlying assumption was that the population was homogeneous. In other words, all …' (and the only contributor was 'Steve Sharp'))
- 20:31, 6 June 2012 Lisa Hacker talk contribs deleted page New8 Solution to Example 1 (content was: 'The first step is to solve the equation <math>y=b\cdot {{e}^{a\cdot x}}</math> for <math>a</math> and <math>b</math> for each of the test units. Usi…' (and the only contributor was 'Steve Sharp'))
- 20:30, 6 June 2012 Lisa Hacker talk contribs deleted page ALT APP A (content was: '=Reference Appendix A: Brief Statistical Background= <br> In this appendix we attempt to provide a brief elementary introduction to the most common and fundamental statistical equations and definitions used in reliability engineering and…')
- 20:29, 6 June 2012 Lisa Hacker talk contribs deleted page User Guide Chapter: Plots (content was: '=ALTA Plots= Plots are available in Standard Folios and Degradation Analysis Folios as well as in Stress Profiles and in SimuMatic. In all cases, these plots can be viewed by clicking the 'Plot' icon located on the Main page of the Cont…')
- 20:29, 6 June 2012 Lisa Hacker talk contribs deleted page New Example 16 (content was: 'A hinge is made up of four components A, B, C, D. Seven units of each component were taken from the assembly line and the following measurements (in cm) …' (and the only contributor was 'Steve Sharp'))
- 20:28, 6 June 2012 Lisa Hacker talk contribs deleted page Simple Actuarial Method (content was: 'The simple actuarial method is an easy-to-use form of nonparametric data analysis that can be used for multiply censored data that are arranged in interva…' (and the only contributor was 'Steve Sharp'))
- 20:28, 6 June 2012 Lisa Hacker talk contribs deleted page Understanding Quantitative Accelerated Life Data Analysis (content was: 'In typical life data analysis one determines, through the use of statistical distributions, a life distribution that describes the times-to-failure of a p…' (and the only contributor was 'Steve Sharp'))
- 20:28, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 3: Accelerated Life Testing (content was: '=Sections= #Understanding Quantitative Accelerated Life Data Analysis #Stress Loading' (and the only contributor was 'Steve Sharp'))
- 20:27, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Example 1 (content was: 'To illustrate the principles behind accelerated testing, consider the following simple example which involves a paper clip and can be easily and independe…' (and the only contributor was 'Steve Sharp'))
- 20:26, 6 June 2012 Lisa Hacker talk contribs deleted page Total Cost (content was: 'For a given reliability ''R'', the expected total cost is given by ::<math>\text{Total Cost}\left(R\right) = \text{Lost Sales Cost}\left(R\right) + \tex…' (and the only contributor was 'Steve Sharp'))
- 20:26, 6 June 2012 Lisa Hacker talk contribs deleted page New Simulation Tools In Weibull++ (content was: 'Monte Carlo simulation can be used to perform simple relationship-based simulations. The new `User Defined' distribution feature allows you to specify an …' (and the only contributor was 'Steve Sharp'))
- 20:26, 6 June 2012 Lisa Hacker talk contribs deleted page Variance/Covariance Matrix (content was: 'The variances and covariances of the parameters are estimated from the inverse local Fisher matrix, as follows: ::<math>\begin{align} & \left( \begi…' (and the only contributor was 'Steve Sharp'))
- 20:25, 6 June 2012 Lisa Hacker talk contribs deleted page Characteristics of the Logistic Distribution (content was: '::• The logistic distribution has no shape parameter. This means that the logistic <math>pdf</math> has only one shape, the bell shape, and this shape…' (and the only contributor was 'Steve Sharp'))
- 20:25, 6 June 2012 Lisa Hacker talk contribs deleted page Manufacturing Cost (content was: 'Manufacturing cost is a function of total market value, market share, and manufacturing cost per unit. The function \(f_{2}\left(x\right)\) for manufactur…' (and the only contributor was 'Steve Sharp'))
- 20:25, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Example 2 (content was: 'Twelve electronic devices were put into a continuous accelerated test. The accelerated stresses were temperature and voltage, with use level conditions of…' (and the only contributor was 'Steve Sharp'))
- 20:24, 6 June 2012 Lisa Hacker talk contribs deleted page A Logistic Distribution Example (content was: 'The lifetime of a mechanical valve is known to follow a logistic distribution. Ten units were tested for 28 months and the following months-to-failure dat…' (and the only contributor was 'Steve Sharp'))
- 20:24, 6 June 2012 Lisa Hacker talk contribs deleted page Loglogistic Probability Density Function (content was: 'The loglogistic distribution is a two-parameter distribution with parameters <math>\mu </math> and <math>\sigma </math> . The <math>pdf</math> for th…' (and the only contributor was 'Steve Sharp'))
- 20:24, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter14 (content was: '=General Examples & Case Studies= In this chapter we present some application examples utilizing ReliaSoft's ALTA and ALTA PRO. We assume that you have previously consulted the ALTA User's Guide and familiarized yourself with the softwar…')
- 20:23, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter11 (content was: '=Multivariable Relationships: General Log-Linear and Proportional Hazards= <br> ==Introduction== <br> So far in this reference the life-stress relationships presented have been either single stress relationships (Chapters 6, 7, and 8) or…')
- 20:22, 6 June 2012 Lisa Hacker talk contribs deleted page New5 Bounds on Reliability (content was: 'The reliability of the Gumbel distribution is given by: ::<math>\widehat{R}(T;\hat{\mu },\hat{\sigma })={{e}^{-{{e}^{{\hat{z}}}}}}</math> where: ::<…' (and the only contributor was 'Steve Sharp'))
- 20:22, 6 June 2012 Lisa Hacker talk contribs deleted page Mixed Weibull, Other Uses (content was: '====Reliability Bathtub Curves==== A reliability bathtub curve is nothing more than the graph of the failure rate versus time, over the life of the produc…' (and the only contributor was 'Steve Sharp'))
- 20:21, 6 June 2012 Lisa Hacker talk contribs deleted page Appendix 6.A: Arrhenius Confidence Bounds (content was: '==Approximate Confidence Bounds for the Arrhenius-Exponential== <br> There are different methods for computing confidence bounds. ALTA utilizes confidence bounds that are based on the asymptotic theory for maximum likelihood estimates, m…')
- 20:21, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter9 (content was: '=Temperature-Humidity Relationship= <br> ==Introduction== <br> The Temperature-Humidity (T-H) relationship, a variation of the Eyring relationship, has been proposed for predicting the life at use conditions when temperature and humid…')
- 20:20, 6 June 2012 Lisa Hacker talk contribs deleted page New Expected Failure Time Plots (content was: 'One of the new features in Weibull++ 8 is the Expected Failure Time Calculation (EFTC) tool. Given the population size and the failure time distribution \…' (and the only contributor was 'Steve Sharp'))
- 20:19, 6 June 2012 Lisa Hacker talk contribs deleted page The Loglogistic Reliability Function (content was: 'The reliability for a mission of time <math>T</math> , starting at age 0, for the loglogistic distribution is determined by: ::<math>R=\frac{1}{1+{{e}^{…' (and the only contributor was 'Steve Sharp'))
- 20:19, 6 June 2012 Lisa Hacker talk contribs deleted page The Loglogistic Reliable Life (content was: 'The logistic reliable life is: ::<math>\mathop{T_{R}}={{e}^{\mu +\sigma [\ln (1-R)-\ln (R)]}}</math>' (and the only contributor was 'Steve Sharp'))
- 20:19, 6 June 2012 Lisa Hacker talk contribs deleted page The Gumbel Reliable Life (content was: 'The Gumbel reliable life is given by: ::<math>\mathop{{{T}_{R}}=\mu +\sigma [\ln (-\ln (R))]}</math>' (and the only contributor was 'Steve Sharp'))
- 20:18, 6 June 2012 Lisa Hacker talk contribs deleted page New5 Bounds on Time (content was: 'The bounds around time for a given Gumbel percentile (unreliability) are estimated by first solving the reliability equation with respect to time, as foll…' (and the only contributor was 'Steve Sharp'))
- 20:18, 6 June 2012 Lisa Hacker talk contribs deleted page New 6 Introduction (content was: 'Non-parametric recurrence data analysis provides a nonparametric graphical estimate of the mean cumulative number or cost of recurrence per unit versus ag…' (and the only contributor was 'Steve Sharp'))
- 20:18, 6 June 2012 Lisa Hacker talk contribs deleted page Example 4 (content was: 'The following table gives the failure times of the air-condition unit of an aircraft. The observation is ended by the time of the last failure [3]. ::<m…' (and the only contributor was 'Steve Sharp'))
- 20:18, 6 June 2012 Lisa Hacker talk contribs deleted page Solution to Example 4 (content was: 'Enter the data into a Parametric RDA Specialized Folio in Weibull++. Choose 3 under Parameters and Type I under Settings. Keep the default simulation sett…' (and the only contributor was 'Steve Sharp'))
- 20:17, 6 June 2012 Lisa Hacker talk contribs deleted page New The Mixed Weibull Distribution (content was: '= Sections = #New Other Distributions #Mixed Weibull Distribution #Background #Mixed Weibull Parameter Estimation #Mixed Weibull, Other …' (and the only contributor was 'Steve Sharp'))
- 20:17, 6 June 2012 Lisa Hacker talk contribs deleted page New3 Bounds on Time (content was: 'The bounds around time for a given logistic percentile (unreliability) are estimated by first solving the reliability equation with respect to time as fol…' (and the only contributor was 'Steve Sharp'))
- 20:16, 6 June 2012 Lisa Hacker talk contribs deleted page New5 Probability Paper (content was: 'The form of the Gumbel probability paper is based on a linearization of the <math>cdf</math> . From Eqn. (UnrGumbel): ::<math>\mathop{z=\ln (-\ln (1-F)…' (and the only contributor was 'Steve Sharp'))
- 20:16, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Distributions (content was: 'A statistical distribution is fully described by its <math>pdf</math> (probability density function). In the previous sections, we used the definition o…' (and the only contributor was 'Steve Sharp'))
- 20:16, 6 June 2012 Lisa Hacker talk contribs deleted page Foreword (content was: 'This reference has been designed to accompany ReliaSoft's Accelerated Life Test Analysis software packages, ALTA 7 Standard and ALTA 7 PRO. The treatment …' (and the only contributor was 'Steve Sharp'))
- 20:15, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 1: Introduction (content was: '=Sections= #Foreword #Modifications and Enhancements #About This Reference' (and the only contributor was 'Steve Sharp'))
- 20:15, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Example 9 (content was: 'An electronic component was subjected to a voltage stress, starting at 2V (use stress level) and increased to 7V in stepwise increments. The following ste…' (and the only contributor was 'Steve Sharp'))
- 20:15, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Example 4 (content was: 'A tensile component of a landing gear was put through an accelerated reliability test to determine whether the life goal would be achieved under the desig…' (and the only contributor was 'Steve Sharp'))
- 20:14, 6 June 2012 Lisa Hacker talk contribs deleted page Probability Paper (content was: 'The form of the Logistic probability paper is based on linearizing the <math>cdf</math> . From Eqn. (UnR fcn), <math>z</math> can be calculated as a f…' (and the only contributor was 'Steve Sharp'))
- 20:14, 6 June 2012 Lisa Hacker talk contribs deleted page Analysis of Censored Data (content was: 'So far we have discussed parameter estimation methods for complete data only. We will expand on that approach in this section by including the maximum lik…' (and the only contributor was 'Steve Sharp'))
- 20:14, 6 June 2012 Lisa Hacker talk contribs deleted page New Life Distributions (content was: 'center|200x200px')
- 20:13, 6 June 2012 Lisa Hacker talk contribs deleted page A Loglogistic Distribution Example (content was: 'Determine the loglogistic parameter estimates for the data given in Table 10.3. ::::<math>\overset{{}}{\mathop{\text{Table 10}\text{.3 - Test data}}}</m…' (and the only contributor was 'Steve Sharp'))
- 20:13, 6 June 2012 Lisa Hacker talk contribs deleted page Apporximating the System CDF (content was: '#REDIRECT Approximating the System CDF' (and the only contributor was 'Steve Sharp'))
- 20:12, 6 June 2012 Lisa Hacker talk contribs deleted page Solution to Example 1 (content was: 'The MCF estimate is obtained as follows: ::<math>\begin{matrix} ID & Months ({{t}_{i}}) & State & {{r}_{i}} & 1/{{r}_{i}} & {{M}^{*}}({{t}_{i}}) \\ …' (and the only contributor was 'Steve Sharp'))
- 20:12, 6 June 2012 Lisa Hacker talk contribs deleted page The GRP Model (content was: 'In this model, the concept of virtual age is introduced. Denote by <math>{{t}_{1}},{{t}_{2}},\cdots ,{{t}_{n}}</math> the successive failure times and l…' (and the only contributor was 'Steve Sharp'))
- 20:12, 6 June 2012 Lisa Hacker talk contribs deleted page Bounds of Conditional Reliability (content was: 'Given mission start time <math>{{t}_{0}}</math> and mission time <math>T</math> , the conditional reliability can be calculated by: ::<math>R(T|{{t}_…' (and the only contributor was 'Steve Sharp'))
- 20:12, 6 June 2012 Lisa Hacker talk contribs deleted page New Parametric Recurrent Events Data Analysis (content was: 'Weibull++'s Parametric RDA Specialized Folio is a tool to model recurrent event data. It can capture the trend, estimate the rate and predict the total nu…' (and the only contributor was 'Steve Sharp'))
- 20:11, 6 June 2012 Lisa Hacker talk contribs deleted page Newer The Generalized Gamma Distribution (content was: '= Sections = #Generalized Gamma Probability Density Function #Generalized Gamma Reliability Function #Generalized Gamma Failure Rate Function …' (and the only contributor was 'Steve Sharp'))
- 20:11, 6 June 2012 Lisa Hacker talk contribs deleted page The Logistic Reliable Life (content was: 'The logistic reliable life is given by: ::<math>\mathop{T_{R}=\mu +\sigma [\ln (1-R)-\ln (R)]}</math>' (and the only contributor was 'Steve Sharp'))
- 20:10, 6 June 2012 Lisa Hacker talk contribs deleted page Newer The Normal Distribution (content was: 'The normal distribution, also known as the Gaussian distribution, is the most widely-used general purpose distribution. It is for this reason that it is i…' (and the only contributor was 'Steve Sharp'))
- 20:10, 6 June 2012 Lisa Hacker talk contribs deleted page New The Normal Distribution (content was: '= Sections = #Newer The Normal Distribution #Newer Fisher Matrix Confidence Bounds #Newer Likelihood Ratio Confidence Bounds' (and the only contributor was 'Steve Sharp'))
- 20:10, 6 June 2012 Lisa Hacker talk contribs deleted page Distribution Characteristics (content was: 'For <math>\sigma >1</math> : ::• <math>f(T)</math> decreases monotonically and is convex. Mode and mean do not exist. For <math>\sigma =1</math> :…' (and the only contributor was 'Steve Sharp'))
- 20:09, 6 June 2012 Lisa Hacker talk contribs deleted page NEW The Loglogistic Distribution (content was: 'As may be indicated by the name, the loglogistic distribution has certain similarities to the logistic distribution. A random variable is loglogistically distributed if the logarithm of the random variable is logistically distributed. Be…')
- 20:09, 6 June 2012 Lisa Hacker talk contribs deleted page New5 Bounds on the Parameters (content was: 'The lower and upper bounds on the mean, <math>\widehat{\mu }</math> , are estimated from: ::<math>\begin{align} {{\mu }_{U}}= & \widehat{\mu }+{{K}_…' (and the only contributor was 'Steve Sharp'))
- 20:09, 6 June 2012 Lisa Hacker talk contribs deleted page Logistic Probability Density Function (content was: 'The logistic <math>pdf</math> is given by: ::<math>\begin{align} f(T)=&\tfrac{{{e}^{z}}}{\sigma {{(1+{{e}^{z}})}^{2}}} \\ z=&\tfrac{t-\mu }{\sig…' (and the only contributor was 'Steve Sharp'))
- 20:08, 6 June 2012 Lisa Hacker talk contribs deleted page New The Logistic Distribution (content was: 'The logistic distribution has been used for growth models, and is used in a certain type of regression known as the logistic regression. It has also appli…' (and the only contributor was 'Steve Sharp'))
- 20:08, 6 June 2012 Lisa Hacker talk contribs deleted page The Mean Cumulative Function (MCF) for Recurrence Data (content was: 'In non-parametric analysis of recurrent events data, each population unit can be described by a cumulative history function for the cumulative number of r…' (and the only contributor was 'Steve Sharp'))
- 20:07, 6 June 2012 Lisa Hacker talk contribs deleted page New Non-Parametric Recurrent Events Data Analysis (content was: 'Recurrent Events Data Analysis, also called Recurrence Data Analysis (RDA), can be used in various applied fields such as reliability, medicine, social s…' (and the only contributor was 'Steve Sharp'))
- 20:07, 6 June 2012 Lisa Hacker talk contribs deleted page New Degradation Data Analysis (content was: 'Given that products are more frequently being designed with higher reliability and developed in a shorter amount of time, it is often not possible to test…' (and the only contributor was 'Steve Sharp'))
- 20:06, 6 June 2012 Lisa Hacker talk contribs deleted page Warranty Data Entry Types (content was: 'Weibull++ allows for data entry utilizing three common formats for storing sales and returns information. Specifically: ::# Nevada Chart Format ::# Time-…' (and the only contributor was 'Steve Sharp'))
- 20:06, 6 June 2012 Lisa Hacker talk contribs deleted page Constant Failure Rate/Chi-Squared Test Design (content was: 'Another method for designing tests for products that have an assumed constant failure rate, or exponential life distribution, draws on the chi-squared dis…' (and the only contributor was 'Steve Sharp'))
- 20:06, 6 June 2012 Lisa Hacker talk contribs deleted page Estimation of the Weibull Parameters (content was: 'The estimates of the parameters of the Weibull distribution can be found graphically via probability plotting paper, or analytically, either using least s…' (and the only contributor was 'Steve Sharp'))
- 20:05, 6 June 2012 Lisa Hacker talk contribs deleted page Distributions (content was: 'A statistical distribution is fully described by its <math>pdf</math> (or probability density function). In the previous sections, we used the definition …' (and the only contributor was 'Steve Sharp'))
- 20:04, 6 June 2012 Lisa Hacker talk contribs deleted page Warranty Analysis (Nevada Format) (content was: 'The Nevada Format allows the user to convert shipping and warranty return data into the standard reliability data form of failures and suspensions so that it can easily be analyzed with traditional life data analysis methods. For each ti…')
- 20:04, 6 June 2012 Lisa Hacker talk contribs deleted page Warranty Analysis (Usage Format) (content was: 'Warranty data analysis relies on the estimation of a failure distribution based on data including the number of returns and the number of surviving units …' (and the only contributor was 'Steve Sharp'))
- 20:04, 6 June 2012 Lisa Hacker talk contribs deleted page New10 Bounds on Reliability (content was: 'The competing failure modes reliability function is given by: ::<math>\widehat{R}=\underset{i=1}{\overset{n}{\mathop \prod }}\,{{\hat{R}}_{i}}</math> w…' (and the only contributor was 'Steve Sharp'))
- 20:03, 6 June 2012 Lisa Hacker talk contribs deleted page New11 The Lognormal Distribution (content was: 'The lognormal distribution is commonly used for general reliability analysis, cycles-to-failure in fatigue, material strengths and loading variables in probabilistic design. A random variable is lognormally distributed if the logarithm o…')
- 20:03, 6 June 2012 Lisa Hacker talk contribs deleted page With Prior Information on System Reliability (content was: 'Prior information on system reliability can be exploited to determine <math>\alpha\,\!_{0}</math> and <math>\beta\,\!_{0}</math>. To do so, first approxim…' (and the only contributor was 'Steve Sharp'))
- 20:03, 6 June 2012 Lisa Hacker talk contribs deleted page Example - With Prior Information on System Reliability (content was: 'Suppose you wanted to know the reliability of a system and you had the following prior knowledge of the system: ::*Lowest possible reliability: ''a'' = …' (and the only contributor was 'Steve Sharp'))
- 20:02, 6 June 2012 Lisa Hacker talk contribs deleted page With Prior Information from Subsystem Tests (content was: 'Prior information from subsystem tests can also be used to determine values of alpha and beta. Information from subsystem tests can be used to calculate t…' (and the only contributor was 'Steve Sharp'))
- 20:02, 6 June 2012 Lisa Hacker talk contribs deleted page Example - With Prior Information from Subsystem Tests (content was: 'Given prior information from subsystem tests, the system reliability can be estimated. Assume a system of interest is composed of 3 subsystems A, B and C.…' (and the only contributor was 'Steve Sharp'))
- 20:00, 6 June 2012 Lisa Hacker talk contribs deleted page New Bayesian Nonparametric Test Design (content was: 'The nonparametric analysis performed in the last section made no assumptions about the underlying distribution of the data and was performed with only the…' (and the only contributor was 'Steve Sharp'))
- 19:59, 6 June 2012 Lisa Hacker talk contribs deleted page New Confidence Bounds (content was: '= Sections = #Newer Confidence Bounds #Fisher Matrix Confidence Bounds' (and the only contributor was 'Steve Sharp'))
- 19:58, 6 June 2012 Lisa Hacker talk contribs deleted page Estimation of the Parameters (content was: '====Probability Plotting==== As described before, probability plotting involves plotting the failure times and associated unreliability estimates on speci…' (and the only contributor was 'Steve Sharp'))
- 19:58, 6 June 2012 Lisa Hacker talk contribs deleted page New General Examples (content was: '====Example 9==== Determine the lognormal parameter estimates for the data given in Table 9.3. ::{| border=1 cellspacing=1 |+ Table 9.3 - Non-Grouped Dat…' (and the only contributor was 'Steve Sharp'))
- 19:57, 6 June 2012 Lisa Hacker talk contribs deleted page New The Lognormal Distribution (content was: 'The Lognormal Distribution The lognormal distribution is commonly used to model the lives of units whose failure modes are of a fatigue-stress nature. Sin…' (and the only contributor was 'Steve Sharp'))
- 19:57, 6 June 2012 Lisa Hacker talk contribs deleted page Characteristics of the Gumbel Distribution (content was: 'Some of the specific characteristics of the Gumbel distribution are the following: ::• The shape of the Gumbel distribution is skewed to the left. The …' (and the only contributor was 'Steve Sharp'))
- 19:56, 6 June 2012 Lisa Hacker talk contribs deleted page A Gumbel Distribution Example (content was: 'Verify using Monte Carlo simulation that if <math>\mathop{{t}_{i}}</math> follows a Weibull distribution with <math>\mathop{\beta} </math> and <math>…' (and the only contributor was 'Steve Sharp'))
- 19:56, 6 June 2012 Lisa Hacker talk contribs deleted page New The Gumber/SEV Distribution (content was: 'The Gumbel distribution is also referred to as the Smallest Extreme Value (SEV) distribution or the Smallest Extreme Value (Type I) distribution. The Gumb…' (and the only contributor was 'Steve Sharp'))
- 19:56, 6 June 2012 Lisa Hacker talk contribs deleted page New Monitoring Warranty Returns Using Statistical Process Control (SPC) (content was: 'By monitoring and analyzing warranty return data, the user now has the ability to detect specific return periods and/or batches of sales or shipments that…' (and the only contributor was 'Steve Sharp'))
- 19:55, 6 June 2012 Lisa Hacker talk contribs deleted page New Warranty Data Analysis (content was: 'The Warranty Analysis Folio in Weibull++ provides three different data entry formats for warranty data. It also allows the user to automatically perform a…' (and the only contributor was 'Steve Sharp'))
- 19:55, 6 June 2012 Lisa Hacker talk contribs deleted page Demonstration Test Design (content was: 'Frequently, a manufacturer will have to demonstrate that a certain product has met a goal of a certain reliability at a given time with a specific confidence. It will often be desired to demonstrate that this goal has been met with a ze…')
- 19:55, 6 June 2012 Lisa Hacker talk contribs deleted page New Reliability Test Design (content was: 'Quite often, there is a desire to design reliability demonstration tests that have few or no failures. These tests are often required to demonstrate custo…' (and the only contributor was 'Steve Sharp'))
- 19:54, 6 June 2012 Lisa Hacker talk contribs deleted page New Non-Parametric Life Data Analysis (content was: 'Nonparametric analysis allows the user to analyze data without assuming an underlying distribution. This can have certain advantages as well as disadvanta…' (and the only contributor was 'Steve Sharp'))
- 19:54, 6 June 2012 Lisa Hacker talk contribs deleted page New10 Bounds on Time (content was: 'The bounds on time are estimate by solving the reliability equation with respect to time. From Eqn. (CFMReliability) we have that: ::<math>\hat{t}=\varp…' (and the only contributor was 'Steve Sharp'))
- 19:53, 6 June 2012 Lisa Hacker talk contribs deleted page New Competing Failure Modes Models (content was: 'Often, a group of products will fail due to more than one failure mode. One can take the view that the products could have failed due to any one of the po…' (and the only contributor was 'Steve Sharp'))
- 19:53, 6 June 2012 Lisa Hacker talk contribs deleted page Estimating Using the Comparison Wizard (content was: 'Another methodology, suggested by Gerald G. Brown and Herbert C. Rutemiller, is to estimate the probability of whether the times-to-failure of one populat…' (and the only contributor was 'Steve Sharp'))
- 19:53, 6 June 2012 Lisa Hacker talk contribs deleted page New Comparing Life Data Sets (content was: 'It is often desirable to be able to compare two sets of reliability or life data in order to determine which of the data sets has a more favorable life di…' (and the only contributor was 'Steve Sharp'))
- 19:52, 6 June 2012 Lisa Hacker talk contribs deleted page Lost Sales Cost (content was: 'The lost sales cost is caused due to lost market share. It is caused by customers choosing to go elsewhere for goods and services. The lost sales cost dep…' (and the only contributor was 'Steve Sharp'))
- 19:52, 6 June 2012 Lisa Hacker talk contribs deleted page New Target Reliability Estimator (content was: 'Product reliability affects total product costs in multiple ways. Increasing product reliability increases the initial cost of producing a product but dec…' (and the only contributor was 'Steve Sharp'))
- 19:51, 6 June 2012 Lisa Hacker talk contribs deleted page Types of Accelerated Tests (content was: 'Each type of test that has been called an accelerated test provides different information about the product and its failure mechanisms. These tests can be…' (and the only contributor was 'Steve Sharp'))
- 19:51, 6 June 2012 Lisa Hacker talk contribs deleted page Quantitative Accelerated Life Tests (content was: 'For all life tests, some time-to-failure information (or time-to-an-event) for the product is required since the failure of the product is the event we want to understand. In other words, if we wish to understand, measure, and predict an…')
- 19:51, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 2: What is Accelerated Life Testing? (content was: '=Sections= #New Foreword #Types of Accelerated Tests #Quantitative Accelerated Life Tests' (and the only contributor was 'Steve Sharp'))
- 19:50, 6 June 2012 Lisa Hacker talk contribs deleted page Plots (content was: 'In addition to the probability plots required in life data analysis, accelerated life test data analysis utilizes a variety of stress-related plots. Each …' (and the only contributor was 'Steve Sharp'))
- 19:50, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 4: Accelerated Life Testing and ALTA (content was: 'This chapter presents issues relevant to using the ALTA software package to analyze data collected in accelerated life tests. These issues include the typ…' (and the only contributor was 'Steve Sharp'))
- 19:49, 6 June 2012 Lisa Hacker talk contribs deleted page New11 The Exponential Distribution (content was: 'The exponential distribution is a very commonly used distribution in reliability engineering. Due to its simplicity, it has been widely employed even in c…' (and the only contributor was 'Steve Sharp'))
- 19:48, 6 June 2012 Lisa Hacker talk contribs deleted page New11 The Weibull Distribution (content was: 'The Weibull distribution is one of the most commonly used distributions in reliability engineering because of the many shapes it attains for various value…' (and the only contributor was 'Steve Sharp'))
- 19:48, 6 June 2012 Lisa Hacker talk contribs deleted page MLE Parameter Estimation (content was: 'The parameters of the 2-parameter Weibull distribution can also be estimated using Maximum Likelihood Estimation (MLE). This log-likelihood function is co…' (and the only contributor was 'Steve Sharp'))
- 18:00, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 5: Life Distributions (content was: 'In this section we will briefly present three lifetime distributions commonly used in accelerated life test analysis, namely the 1-parameter exponential, …' (and the only contributor was 'Steve Sharp'))
- 17:59, 6 June 2012 Lisa Hacker talk contribs deleted page Arrhenius-Exponential (content was: 'The <math>pdf</math> of the 1-parameter exponential distribution is given by: <br> ::<math>\mathop{f(t)=\lambda {{e}^{-\lambda t}}}</math> <br> It can…' (and the only contributor was 'Steve Sharp'))
- 17:59, 6 June 2012 Lisa Hacker talk contribs deleted page Arrhenius-Weibull (content was: '==The Model== The Arrhenius-Weibull model as used in acclerated life testing is a combination of the 2-parameter Weibull distribution and the Arrhenius life-stress relationship, or: ::<math>f(t)=\frac{\beta }{\eta }{{\lef…')
- 17:59, 6 June 2012 Lisa Hacker talk contribs deleted page Arrhenius-Lognormal (content was: 'The <math>pdf</math> of the lognormal distribution is given by: <br> <br> ::<math>f(T)=\frac{1}{T\text{ }{{\sigma }_{{{T}'}}}\sqrt{2\pi }}{{e}^{-\tfrac…' (and the only contributor was 'Steve Sharp'))
- 17:57, 6 June 2012 Lisa Hacker talk contribs deleted page Eyring-Exponential (content was: 'The <math>pdf</math> of the 1-parameter exponential distribution is given by: <br> ::<math>f(t)=\lambda \cdot {{e}^{-\lambda \cdot t}}</math> <br> It ca…' (and the only contributor was 'Steve Sharp'))
- 17:57, 6 June 2012 Lisa Hacker talk contribs deleted page New13 Parameter Estimation (content was: '===Maximum Likelihood Estimation Method=== <br> The Eyring-Weibull log-likelihood function is composed of two summation portions: <br> ::<math>\begin{al…' (and the only contributor was 'Steve Sharp'))
- 17:56, 6 June 2012 Lisa Hacker talk contribs deleted page Eyring-Lognormal (content was: 'The <math>pdf</math> of the lognormal distribution is given by: <br> ::<math>f(T)=\frac{1}{T\text{ }{{\sigma }_{{{T}'}}}\sqrt{2\pi }}{{e}^{-\tfrac{1}{…' (and the only contributor was 'Steve Sharp'))
- 17:56, 6 June 2012 Lisa Hacker talk contribs deleted page Generalized Eyring Relationship (content was: '===Introduction=== <br> The generalized Eyring relationship is used when temperature and a second non-thermal stress (e.g. voltage) are the accelerated s…' (and the only contributor was 'Steve Sharp'))
- 17:56, 6 June 2012 Lisa Hacker talk contribs deleted page New14 Acceleration Factor (content was: 'For the IPL relationship the acceleration factor is given by: <br> ::<math>{{A}_{F}}=\frac{{{L}_{USE}}}{{{L}_{Accelerated}}}=\frac{\tfrac{1}{KV_{u}^{n}}…' (and the only contributor was 'Steve Sharp'))
- 17:55, 6 June 2012 Lisa Hacker talk contribs deleted page IPL-Exponential (content was: 'The IPL-exponential model can be derived by setting <math>m=L(V)</math> in Eqn. (inverse), yielding the following IPL-exponential <math>pdf</math> : <…' (and the only contributor was 'Steve Sharp'))
- 17:55, 6 June 2012 Lisa Hacker talk contribs deleted page IPL-Weibull (content was: 'The IPL-Weibull model can be derived by setting <math>\eta =L(V)</math> , yielding the following IPL-Weibull <math>pdf\ \ :</math> <br> ::<math>f(t,V)…' (and the only contributor was 'Steve Sharp'))
- 17:54, 6 June 2012 Lisa Hacker talk contribs deleted page IPL-Lognormal (content was: 'The <math>pdf</math> of the lognormal distribution is given by: <br> ::<math>f(T)=\frac{1}{T\text{ }{{\sigma }_{{{T}'}}}\sqrt{2\pi }}{{e}^{-\tfrac{1}{2…' (and the only contributor was 'Steve Sharp'))
- 17:54, 6 June 2012 Lisa Hacker talk contribs deleted page IPL and the Coffin-Manson Relationship (content was: 'In accelerated life testing analysis, thermal cycling is commonly treated as a low-cycle fatigue problem, using the inverse power law relationship. Coffin…' (and the only contributor was 'Steve Sharp'))
- 17:54, 6 June 2012 Lisa Hacker talk contribs deleted page New15 Introduction (content was: 'The Temperature-Humidity (T-H) relationship, a variation of the Eyring relationship, has been proposed for predicting the life at use conditions when tem…' (and the only contributor was 'Steve Sharp'))
- 17:54, 6 June 2012 Lisa Hacker talk contribs deleted page New15 Acceleration Factor (content was: 'The acceleration factor for the T-H relationship is given by: <br> ::<math>{{A}_{F}}=\frac{{{L}_{USE}}}{{{L}_{Accelerated}}}=\frac{A{{e}^{\tfrac{\phi }{…' (and the only contributor was 'Steve Sharp'))
- 17:53, 6 June 2012 Lisa Hacker talk contribs deleted page T-H Exponential (content was: 'By setting <math>m=L(U,V)</math> in Eqn. (Temp-Hum) the exponential <math>pdf</math> becomes: <br> ::<math>f(t,V,U)=\frac{1}{A}{{e}^{-\left( \tfrac{\…' (and the only contributor was 'Steve Sharp'))
- 17:53, 6 June 2012 Lisa Hacker talk contribs deleted page T-NT Lognormal (content was: 'The <math>pdf</math> of the lognormal distribution is given by: <br> ::<math>f(T)=\frac{1}{T\text{ }{{\sigma }_{{{T}'}}}\sqrt{2\pi }}{{e}^{-\tfrac{1}{2…' (and the only contributor was 'Steve Sharp'))
- 17:52, 6 June 2012 Lisa Hacker talk contribs deleted page T-H Weibull (content was: 'By setting <math>\eta =L(U,V)</math> as given in Eqn. (Temp-Hum), the T--H Weibull model's <math>pdf</math> is given by: .. <br> ===T-H Weibull Stat…' (and the only contributor was 'Steve Sharp'))
- 17:52, 6 June 2012 Lisa Hacker talk contribs deleted page T-H Lognormal (content was: 'The <math>pdf</math> of the lognormal distribution is given by: <br> ::<math>f(T)=\frac{1}{T\text{ }{{\sigma }_{{{T}'}}}\sqrt{2\pi }}{{e}^{-\tfrac{1}{2…' (and the only contributor was 'Steve Sharp'))
- 17:51, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 9: Temperature-Humidity Relationship (content was: '=Sections= #New15 Introduction #A Look at the Parameters Phi and b #T-H Data #New15 Acceleration Factor #T-H Exponential #T-H Weibul…' (and the only contributor was 'Steve Sharp'))
- 17:51, 6 June 2012 Lisa Hacker talk contribs deleted page New17 Introduction (content was: 'When temperature and a second non-thermal stress (e.g. voltage) are the accelerated stresses of a test, then the Arrhenius and the inverse power law relat…' (and the only contributor was 'Steve Sharp'))
- 17:51, 6 June 2012 Lisa Hacker talk contribs deleted page New17 Acceleration Factor (content was: 'The acceleration factor for the T-NT relationship is given by: <br> ::<math>{{A}_{F}}=\frac{{{L}_{USE}}}{{{L}_{Accelerated}}}=\frac{\tfrac{C}{U_{u}^{n}}{…' (and the only contributor was 'Steve Sharp'))
- 17:50, 6 June 2012 Lisa Hacker talk contribs deleted page T-NT Exponential (content was: 'By setting <math>m=L(U,V)</math> as given in Eqn. (Temp-Volt), the exponential <math>pdf</math> becomes: ::<math>f(t,U,V)=\frac{{{U}^{n}}}{C}{{e}^{-\t…' (and the only contributor was 'Steve Sharp'))
- 17:47, 6 June 2012 Lisa Hacker talk contribs deleted page T-NT Weibull (content was: 'By setting <math>\eta =L(U,V)</math> from Eqn. (Temp-Volt), the T-NT Weibull model is given by: ::<math>f(t,U,V)=\frac{\beta {{U}^{n}}{{e}^{-\tfrac{B}{V…' (and the only contributor was 'Steve Sharp'))
- 17:46, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 10: Temperature-NonThermal Relationship (content was: '=Sections= #New17 Introduction #A Look at the Parameters B and n #New17 Acceleration Factor #T-NT Exponential #T-NT Weibull #T-NT Lo…' (and the only contributor was 'Steve Sharp'))
- 17:46, 6 June 2012 Lisa Hacker talk contribs deleted page Accelerated Life Test Plans (content was: 'Poor accelerated test plans waste time, effort and money and may not even yield the desired information. Before starting an accelerated test (which is som…' (and the only contributor was 'Steve Sharp'))
- 17:46, 6 June 2012 Lisa Hacker talk contribs deleted page Example 8 (content was: 'An electronic component was redesigned and was tested to failure at three different temperatures. Six units were tested at each stress level. At the 406K …' (and the only contributor was 'Steve Sharp'))
- 17:45, 6 June 2012 Lisa Hacker talk contribs deleted page General Log-Linear Relationship (content was: 'When a test involves multiple accelerating stresses or requires the inclusion of an engineering variable, a general multivariable relationship is needed. …' (and the only contributor was 'Steve Sharp'))
- 17:45, 6 June 2012 Lisa Hacker talk contribs deleted page Proportional Hazards Model (content was: 'Introduced by D. R. Cox, the Proportional Hazards (PH) model was developed in order to estimate the effects of different covariates influencing the times-…' (and the only contributor was 'Steve Sharp'))
- 17:44, 6 June 2012 Lisa Hacker talk contribs deleted page Indicator Variables (content was: 'Another advantage of the models presented in this chapter is that they allow for simultaneous analysis of continuous and categorical variables. Categorica…' (and the only contributor was 'Steve Sharp'))
- 17:44, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 11: Multivariable Relationships: General Log-Linear and Proportional Hazards (content was: '=Sections= #New18 Introduction #General Log-Linear Relationship #Proportional Hazards Model #Indicator Variables' (and the only contributor was 'Steve Sharp'))
- 17:44, 6 June 2012 Lisa Hacker talk contribs deleted page New19 Example (content was: 'Using the simple step-stress data given in Section 12.2, one would define <math>x(t)</math> as: ::<math>\begin{align} x(t)= & 2,\text{ }0<t\le …' (and the only contributor was 'Steve Sharp'))
- 17:43, 6 June 2012 Lisa Hacker talk contribs deleted page Cumulative Damage General Log-Linear Relationship (content was: 'This section presents a generalized formulation of the cumulative damage model where multiple stress types are used in the analysis and where the stresses…' (and the only contributor was 'Steve Sharp'))
- 17:43, 6 June 2012 Lisa Hacker talk contribs deleted page Common Shape Parameter Likelihood Ratio Test (content was: 'In order to assess the assumption of a common shape parameter among the data obtained at various stress levels, the likelihood ratio (LR) test can be util…' (and the only contributor was 'Steve Sharp'))
- 17:43, 6 June 2012 Lisa Hacker talk contribs deleted page Tests of Comparison (content was: 'It is often desirable to be able to compare two sets of accelerated life data in order to determine which of the data sets has a more favorable life distr…' (and the only contributor was 'Steve Sharp'))
- 17:42, 6 June 2012 Lisa Hacker talk contribs deleted page Degradation Analysis (content was: 'Given that products are frequently being designed with higher reliabilities and developed in shorter amounts of time, even accelerated life testing is oft…' (and the only contributor was 'Steve Sharp'))
- 17:42, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 13: Additional Tools (content was: 'ALTA and ALTA PRO contain some additional analysis tools that allow you to perform supplementary analyses. These include tests of comparison between two d…' (and the only contributor was 'Steve Sharp'))
- 17:41, 6 June 2012 Lisa Hacker talk contribs deleted page Example 3 (content was: 'A mechanical component was put into an accelerated test with temperature as the accelerated stress. The following times-to-failure were observed. {|styl…' (and the only contributor was 'Steve Sharp'))
- 17:38, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 14: General Examples & Case Studies (content was: 'In this chapter we present some application examples utilizing ReliaSoft's ALTA and ALTA PRO. We assume that you have previously consulted the ALTA User's…' (and the only contributor was 'Steve Sharp'))
- 17:37, 6 June 2012 Lisa Hacker talk contribs deleted page Brief Statistical Background (content was: 'In this appendix we attempt to provide a brief elementary introduction to the most common and fundamental statistical equations and definitions used in re…' (and the only contributor was 'Steve Sharp'))
- 17:37, 6 June 2012 Lisa Hacker talk contribs deleted page Confidence Limits Determination (content was: 'This section presents an overview of the theory on obtaining approximate confidence bounds on suspended (multiply censored) data. The methodology used is …' (and the only contributor was 'Steve Sharp'))
- 17:36, 6 June 2012 Lisa Hacker talk contribs deleted page Maximum Likelihood (MLE) Parameter Estimation (content was: 'The idea behind maximum likelihood parameter estimation is to determine the parameters that maximize the probability (likelihood) of the sample data. From…' (and the only contributor was 'Steve Sharp'))
- 17:36, 6 June 2012 Lisa Hacker talk contribs deleted page MLE of Accelerated Life Data (content was: 'Maximum likelihood offers a very powerful method in estimating the parameters of accelerated testing models, making possible the analysis of very complex …' (and the only contributor was 'Steve Sharp'))
- 17:19, 6 June 2012 Lisa Hacker talk contribs deleted page New22 Example 1 (content was: 'From Wayne Nelson [28, p. 135]. <br> ==Published Results for Example 1== <br> ::• Published Results: ::<math>\begin{align} {{\widehat{\sigma }}_{{…' (and the only contributor was 'Steve Sharp'))
- 17:18, 6 June 2012 Lisa Hacker talk contribs deleted page New22 Example 2 (content was: 'From Wayne Nelson [28, p. 453], time to breakdown of a transformer oil, tested at 26kV, 28kV, 30kV, 32kV, 34kV, 36kV and 38kV. <br> <br> ==Published Resul…' (and the only contributor was 'Steve Sharp'))
- 17:16, 6 June 2012 Lisa Hacker talk contribs deleted page New22 Example 3 (content was: 'From Wayne Nelson [28, p. 157], forty bearings were tested to failure at four different test loads. The data were analyzed using the inverse power law Wei…' (and the only contributor was 'Steve Sharp'))
- 17:15, 6 June 2012 Lisa Hacker talk contribs deleted page New22 Example 4 (content was: 'From Meeker and Escobar [26, p. 504], Mylar-Polyurethane Insulating Structure data using the inverse power law lognormal model. <br> <br> ==Published Resu…' (and the only contributor was 'Steve Sharp'))
- 17:15, 6 June 2012 Lisa Hacker talk contribs deleted page New22 Example 5 (content was: 'From Meeker and Escobar [26, p. 515], Tantalum Capacitor data using the combination (Temperature-NonThermal) Weibull model. <br> <br> ==Published Results …' (and the only contributor was 'Steve Sharp'))
- 17:09, 6 June 2012 Lisa Hacker talk contribs deleted page Graphical Method (content was: 'Graphical analysis is the simplest method for obtaining results in both life data and accelerated life testing analyses. Although they have limitations (p…' (and the only contributor was 'Steve Sharp'))
- 17:08, 6 June 2012 Lisa Hacker talk contribs deleted page Cumulative Damage Exponential Relationship (content was: 'This section presents a generalized formulation of the cumulative damage model where stress can be any function of time and the life-stress relationship i…' (and the only contributor was 'Steve Sharp'))
- 17:08, 6 June 2012 Lisa Hacker talk contribs deleted page Cumulative Damage Arrhenius Relationship (content was: 'This section presents a generalized formulation of the cumulative damage model where stress can be any function of time and the life-stress relationship i…' (and the only contributor was 'Steve Sharp'))
- 17:07, 6 June 2012 Lisa Hacker talk contribs deleted page Model Formulation (content was: 'To formulate the cumulative exposure/damage model, consider a simple step-stress experiment where an electronic component was subjected to a voltage stres…' (and the only contributor was 'Steve Sharp'))
- 17:07, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 12: Time-Varying Stress Models (content was: '=Sections= #New19 Introduction #Model Formulation #Cumulative Damage Arrhenius Relationship #Cumulative Damage Exponential Relationship #[…' (and the only contributor was 'Steve Sharp'))
- 17:06, 6 June 2012 Lisa Hacker talk contribs deleted page New14 Introduction (content was: 'The inverse power law (IPL) model (or relationship) is commonly used for non-thermal accelerated stresses and is given by: <br> ::<math>L(V)=\frac{1}{K{{…' (and the only contributor was 'Steve Sharp'))
- 17:06, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 8: Inverse Power Law (IPL) Relationship (content was: '=Sections= #New14 Introduction #New14 Acceleration Factor #IPL-Exponential #IPL-Weibull #New14 Example 1 #IPL-Lognormal #IPL and…' (and the only contributor was 'Steve Sharp'))
- 17:05, 6 June 2012 Lisa Hacker talk contribs deleted page ALT APP C (content was: '=Reference Appendix C: Benchmark Examples= <br> In this section, five published examples are presented for comparison purposes. ReliaSoft's R&D validated the ALTA software with hundreds of data sets and methods. ALTA also cross-validates…')
- 17:05, 6 June 2012 Lisa Hacker talk contribs deleted page Eyring-Weibull (content was: 'The <math>pdf</math> for 2-parameter Weibull distribution is given by: <br> ::<math>f(t)=\frac{\beta }{\eta }{{\left( \frac{t}{\eta } \right)}^{\beta -…' (and the only contributor was 'Steve Sharp'))
- 17:04, 6 June 2012 Lisa Hacker talk contribs deleted page New13 Introduction (content was: 'The Eyring relationship was formulated from quantum mechanics principles [9] and is most often used when thermal stress (temperature) is the acceleration variable. However, the Eyring relationship is also often used for stress variables …')
- 17:04, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 7: Eyring Relationship (content was: '=Sections= #New13 Introduction #New13 Acceleration Factor #Eyring-Exponential #Eyring-Weibull #New13 Parameter Estimation #New13 Exa…' (and the only contributor was 'Steve Sharp'))
- 17:02, 6 June 2012 Lisa Hacker talk contribs deleted page New12 Introduction (content was: 'The Arrhenius life-stress model (or relationship) is probably the most common life-stress relationship utilized in accelerated life testing. It has been w…' (and the only contributor was 'Steve Sharp'))
- 17:01, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 6: Arrhenius Relationship (content was: '=Sections= #New12 Introduction #Acceleration Factor #Arrhenius-Exponential #Arrhenius-Weibull #Example #Arrhenius-Lognormal #App…' (and the only contributor was 'Steve Sharp'))
- 17:01, 6 June 2012 Lisa Hacker talk contribs deleted page New The Weibull Distribution (content was: 'The Weibull distribution is one of the most widely used lifetime distributions in reliability engineering. It is a versatile distribution that can take on…' (and the only contributor was 'Steve Sharp'))
- 16:59, 6 June 2012 Lisa Hacker talk contribs deleted page Newer Parameter Estimation (content was: 'Once a distribution has been selected, the parameters of the distribution need to be estimated. Several parameter estimation methods are available. This s…' (and the only contributor was 'Steve Sharp'))
- 16:58, 6 June 2012 Lisa Hacker talk contribs deleted page Newer Accelerated Life Testing Data Analysis Reference (content was: '=Chapters= #Chapter 1: Introduction #Chapter 2: What is Accelerated Life Testing? #Chapter 3: Accelerated Life Testing #Chapter 4: Accelerat…' (and the only contributor was 'Steve Sharp'))
- 16:57, 6 June 2012 Lisa Hacker talk contribs deleted page New Parameter Estimation (content was: '= Sections = #Newer Parameter Estimation #Maximum Likelihood (MLE) Parameter Estimation for Complete Data #Bayesian Statistics' (and the only contributor was 'Steve Sharp'))
- 16:56, 6 June 2012 Lisa Hacker talk contribs deleted page Newer Life Data Analysis Reference (content was: '#New Introduction to Life Data Analysis #New Basic Statistical Background #New Life Distributions #New Parameter Estimation ## Appendix 4…' (and the only contributor was 'Steve Sharp'))
- 16:54, 6 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter3 (content was: '=Statistical Background= <br> ==Introduction== <br> This chapter presents a brief review of statistical principles and terminology. The objective of this chapter is to introduce concepts from probability theory and statistics that will …')
- 16:49, 6 June 2012 Lisa Hacker talk contribs deleted page ALT APP B (content was: '=Reference Appendix B: Parameter Estimation= Once a life distribution and a life-stress relationship have been selected, the parameters (i.e. the variables that govern the characteristics of the ) need to be determined. Several para…')
- 16:48, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter12 (content was: '=Time-Varying Stress Models= <br> ==Introduction== <br> Traditionally, accelerated tests that use a time-varying stress application have been used to assure failures quickly. This is highly desirable given the pressure on industry today …')
- 16:47, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter8 (content was: '=Inverse Power Law (IPL)Relationship= <br> ==Introduction== <br> The inverse power law (IPL) model (or relationship) is commonly used for non-thermal accelerated stresses and is given by: <br> ::<math>L(V)=\frac{1}{K{{V}^{n}}}</math> <…')
- 16:47, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter7 (content was: '=Eyring Relationship= <br> ==Introduction== <br> The Eyring relationship was formulated from quantum mechanics principles [9] and is most often used when thermal stress (temperature) is the acceleration variable. However, the Eyring re…')
- 18:15, 4 June 2012 Lisa Hacker talk contribs deleted page Template:Eyring relationship (content was: '==Introduction== <br> The Eyring relationship was formulated from quantum mechanics principles [9] and is most often used when thermal stress (temperature) is the acceleration variable. However, the …')
- 16:20, 4 April 2012 Lisa Hacker talk contribs undeleted page Target Reliability Estimator (1 revision restored)
- 16:20, 4 April 2012 Lisa Hacker talk contribs deleted page Target Reliability Estimator (content was: '#REDIRECT Target Reliability Tool' (and the only contributor was 'Chris Kahn'))
- 00:55, 4 April 2012 Lisa Hacker talk contribs changed group membership for Melinda Caroline from (none) to ReliaSoft
- 00:32, 4 April 2012 Lisa Hacker talk contribs changed group membership for Steve Sharp from administrator to (none)
- 00:31, 4 April 2012 Lisa Hacker talk contribs changed group membership for Chris Kahn from (none) to ReliaSoft
- 17:11, 3 April 2012 Lisa Hacker talk contribs uploaded File:RCM-label.png
- 17:11, 3 April 2012 Lisa Hacker talk contribs uploaded File:Xfmea-label.png
- 16:59, 3 April 2012 Lisa Hacker talk contribs uploaded File:Xfmeabox.png
- 16:20, 3 April 2012 Lisa Hacker talk contribs uploaded File:Fmra colors.png
- 01:02, 3 April 2012 Lisa Hacker talk contribs uploaded File:Fmra table.png
- 01:00, 3 April 2012 Lisa Hacker talk contribs uploaded File:Fmra occurrence scale.png
- 00:58, 3 April 2012 Lisa Hacker talk contribs uploaded File:Fmra roll up.png
- 00:53, 3 April 2012 Lisa Hacker talk contribs uploaded File:Fmra build configuration.png
- 00:48, 3 April 2012 Lisa Hacker talk contribs uploaded File:Fmra relationships.png
- 00:40, 3 April 2012 Lisa Hacker talk contribs deleted page FMRA Baseline Reliability (content was: '#REDIRECT Using FMRA to Estimate Baseline Reliability' (and the only contributor was 'Lisa Hacker'))
- 00:39, 3 April 2012 Lisa Hacker talk contribs moved page FMRA Baseline Reliability to Using FMRA to Estimate Baseline Reliability
- 22:51, 30 March 2012 Lisa Hacker talk contribs moved page Appendix E: Confidence Bounds to Appendix D: Confidence Bounds
- 22:51, 30 March 2012 Lisa Hacker talk contribs undeleted page Appendix E: Confidence Bounds (2 revisions restored)
- 22:47, 30 March 2012 Lisa Hacker talk contribs moved page Reference Appendix D: References to Appendix E: References
- 22:47, 30 March 2012 Lisa Hacker talk contribs deleted page Appendix E: Confidence Bounds (content was: '{{template:ALTABOOK|E}} {{What are Confidence Bounds}} {{Fisher Matrix Confidence Bounds}} {{Beta Binomial Confidence Bounds}} {{Likelihood Ratio Confi…' (and the only contributor was 'Lisa Hacker'))
- 22:46, 30 March 2012 Lisa Hacker talk contribs moved page Appendix: Confidence Bounds to Appendix E: Confidence Bounds
- 22:39, 30 March 2012 Lisa Hacker talk contribs deleted page Life-Stress Relationship Models (content was: '{{Stubs}}' (and the only contributor was 'Chris Kahn'))
- 22:39, 30 March 2012 Lisa Hacker talk contribs deleted page Target Reliability Estimation (content was: '{{Stubs}} Something about the new plot. It should explain how each of the curves are derived.' (and the only contributor was 'Lisa Hacker'))
- 22:39, 30 March 2012 Lisa Hacker talk contribs deleted page Template:Test Design Using Difference Detection Matrix (content was: '{{Stubs}} {{template:LDABOOK|27|Difference Detection Matrix}} {{difference detection matrix}}')
- 22:38, 30 March 2012 Lisa Hacker talk contribs deleted page Comparison Wizard (content was: '{{Stubs}} Something that explains the Comparison Wizard equations. Will probably link to the Stress-Strength topic.' (and the only contributor was 'Lisa Hacker'))
- 22:37, 30 March 2012 Lisa Hacker talk contribs deleted page Complex Competing Failure Modes (content was: '{{Stubs}} This topic would cover the more complex CFM analysis method that uses the Diagram sheet (based on http://www.weibull.com/LifeDataWeb/competing_failure_modes.htm#complex). There can be a separate (linked) topic that covers the …')
- 22:37, 30 March 2012 Lisa Hacker talk contribs deleted page Life Data Distributions (content was: '{{Stubs}}' (and the only contributor was 'Kate Racaza'))
- 22:37, 30 March 2012 Lisa Hacker talk contribs deleted page Mixed Weibull (content was: '{{Stubs}} This was covered at http://www.weibull.com/LifeDataWeb/the_mixed_weibull_distribution.htm in the V7 book. The existing material seems to cause …' (and the only contributor was 'Lisa Hacker'))
- 22:37, 30 March 2012 Lisa Hacker talk contribs deleted page Reliability Demonstration Test Design (content was: '{{Stubs}} This topic should focus on the four methods of RDT design (e.g. Parametric Binomial, etc.). Probably would describe the underlying concepts fir…' (and the only contributor was 'Lisa Hacker'))
- 22:36, 30 March 2012 Lisa Hacker talk contribs deleted page Parameter Estimation Methods (content was: '{{Stubs}}' (and the only contributor was 'Kate Racaza'))
- 22:36, 30 March 2012 Lisa Hacker talk contribs deleted page Stubs Done (content was: '# Confidence Intervals Confidence_Bounds # Weibull Statistical Distributions The Weibull Distribution Category:Stubs' (and the only contributor was 'Pantelis'))
- 22:35, 30 March 2012 Lisa Hacker talk contribs deleted page Nonparametric LDA (content was: '{{Stubs}} An updated version of http://www.weibull.com/LifeDataWeb/nonparametric_analysis.htm.' (and the only contributor was 'Lisa Hacker'))
- 22:35, 30 March 2012 Lisa Hacker talk contribs deleted page Basic Competing Failure Modes (content was: '{{Stubs}} This page would cover the basic CFM analysis method that's available from the Distribution list in the Weibull++ standard folio. A separate (li…' (and the only contributor was 'Lisa Hacker'))
- 22:35, 30 March 2012 Lisa Hacker talk contribs deleted page ALTA Analysis Method (content was: '{{Stubs}} The information from http://www.weibull.com/AccelTestWeb/understanding_accelerated_life_test_analysis.htm about the general accelerated life te…' (and the only contributor was 'Lisa Hacker'))
- 22:33, 30 March 2012 Lisa Hacker talk contribs moved page Appendix: Distribution Log-Likelihood Equations to Appendix: Log-Likelihood Equations
- 22:28, 30 March 2012 Lisa Hacker talk contribs deleted page Bayesian Weibull (content was: '{{Stubs}} This topic is now covered more thoroughly (coherently) in the help file but it would be nice to revise/improve the theory book version, which w…' (and the only contributor was 'Lisa Hacker'))
- 21:47, 30 March 2012 Lisa Hacker talk contribs moved page The Loglogistic to The Loglogistic Distribution (Consistency)
- 21:47, 30 March 2012 Lisa Hacker talk contribs deleted page The Loglogistic Distribution (Deleted to make way for move)
- 21:46, 30 March 2012 Lisa Hacker talk contribs moved page The Loglogistic Distribution to NEW The Loglogistic Distribution
- 21:32, 30 March 2012 Lisa Hacker talk contribs moved page Weibull-Bayesian Analysis to Bayesian-Weibull Analysis (Match the software interface)
- 01:08, 30 March 2012 Lisa Hacker talk contribs moved page Appendix: Weibull References to Appendix: Life Data Analysis References
- 01:06, 30 March 2012 Lisa Hacker talk contribs moved page Weibull SimuMatic to Weibull++ SimuMatic
- 01:05, 30 March 2012 Lisa Hacker talk contribs moved page Competing Failure Modes Models to Competing Failure Modes Analysis
- 00:58, 30 March 2012 Lisa Hacker talk contribs moved page Stress Strength Analysis to Stress-Strength Analysis
- 00:49, 30 March 2012 Lisa Hacker talk contribs uploaded File:Detection Matrix Example B10 Intervals new.png
- 00:44, 30 March 2012 Lisa Hacker talk contribs uploaded a new version of File:Detection Matrix Example B10 Intervals.png (Reverted to version as of 18:57, 24 February 2012)
- 00:40, 30 March 2012 Lisa Hacker talk contribs uploaded a new version of File:Detection Matrix Example B10 Intervals.png (Removed extra whitespace.)
- 23:37, 29 March 2012 Lisa Hacker talk contribs moved page Template:Example: Weibull Distribution Example-Demostrate MTTF to Template:Example: Weibull Distribution Example-Demonstrate MTTF (Correct typo)
- 23:32, 29 March 2012 Lisa Hacker talk contribs moved page Template:Example: Weibull Distribution Example-Demostrate Reliability to Template:Example: Weibull Distribution Example-Demonstrate Reliability (Correct typo)
- 21:20, 29 March 2012 Lisa Hacker talk contribs deleted page Testmain (content was: '{{template:test1}}' (and the only contributor was 'Pantelis'))
- 21:20, 29 March 2012 Lisa Hacker talk contribs deleted page Test (content was: '{{LSRstats |Arrhenius-Weibull |{{arrhWeibullpdf}} |{{weibull2pdf}} |{{arrhenius}} |}}' (and the only contributor was 'Pantelis'))
- 21:13, 29 March 2012 Lisa Hacker talk contribs deleted page Testpage (content before blanking was: '{{Stubs}}')
- 21:13, 29 March 2012 Lisa Hacker talk contribs deleted page SYS Chapter11 (content was: '==Reliability Phase Diagrams (RPDs)== ==Introduction== The term phase diagram is used in many disciplines with different meanings. In physical …' (and the only contributor was 'Nicolette Young'))
- 00:32, 21 July 2011 Lisa Hacker talk contribs deleted page Parametric Recurrent Event Data Analysis (It was a duplicate for another stub.)
- 00:32, 21 July 2011 Lisa Hacker talk contribs deleted page Non-Parametric Recurrent Event Data Analysis (It was a duplicate for another stub.)
- 16:05, 2 May 2011 User account Richard House talk contribs was created by Lisa Hacker talk contribs
- 16:05, 2 May 2011 User account Kate Racaza talk contribs was created by Lisa Hacker talk contribs