Template:Developmental testing data types: Difference between revisions

From ReliaWiki
Jump to navigation Jump to search
(Redirected page to RGA Data Types)
 
(2 intermediate revisions by one other user not shown)
Line 1: Line 1:
==Developmental Testing Data Types==
#REDIRECT [[RGA Data Types]]
{{time-to-failure data}}
 
{{discrete data}}
 
===Multi-Phase Data===
Reliability data can be analyzed across multiple phases. This is useful when an overall reliability growth program is planned and involves multiple test phases.
<br>
====(Multi-Phase) Failure Times Data====
This data type can be used for tests that span multiple phases and the exact failure times are recorded. Figure CECETF shows an example of multi-phase failure times data, where the different events signify failures (F), test phases (PH) or analysis points (AP).
 
<br>
[[Image:rga3.15.png|thumb|center|400px|Multi-phase failure times data]]
 
====(Multi-Phase) Grouped Failure Times Data====
This data type can be used for tests that span multiple phases and the exact failure times are unknown. Only the number of failures within a time interval are recorded, as shown in Figure CECErouped.
 
<br>
[[Image:rga3.16.png|thumb|center|400px|Multi-phase grouped failure times data]]
 
====(Multi-Phase) Mixed Data====
 
This data type can be used for tests that span multiple phases and it allows for configuration in groups, individual trial by trial, or a mixed combination of individual trials and configurations of more than one trial. An example of this data type can be seen in Figure Multi-phase mixed data.
 
<br>
[[Image:rga3.17.png|thumb|center|400px|Multi-phase mixed data]]
<br>
 
====Models for Multi-Phase Data====
The Crow Extended - Continuous Evaluation model is used to analyze data across multiple phases and is presented in Chapter 10.
 
===Reliability Data===
Reliability data consists of entering the reliability of the equipment at different times or stages. An example is shown in Figure Reliability. In this case, the process is monitored at pre-defined time intervals and the reliability is recorded. The reliability can be computed by a simple ratio of the number of units still functioning vs. the number of units that entered the test stage or by using Life Data Analysis and related methods (e.g. Weibull analysis).
 
<br>
[[Image:rga3.18.png|thumb|center|400px|Reliability data.]]
<br>
 
====Models for Reliability Data====
The following models can be used to analyze reliability data sets. Models and examples using different data types are discussed in later chapters.
<br>
1) Lloyd-Lipow (Chapter 6)
<br>
2) Gompertz and Modified Gompertz (Chapter 7)
<br>
3) Logistic (Chapter 8)
<br>

Latest revision as of 07:21, 23 August 2012

Redirect to:

Retrieved from "https://www.reliawiki.com/index.php?title=Template:Developmental_testing_data_types&oldid=33540"