ALTA ALTA Standard Folio Data Arrhenius-Exponential - Revision history

Richard House: Redirected page to Template:WebNotes/ALTAALTA Standard Folio Data Arrhenius

2015-07-07T23:15:32Z

Redirected page to Template:WebNotes/ALTAALTA Standard Folio Data Arrhenius

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	The Arrhenius life-stress model (or relationship) is probably the most common life-stress relationship utilized in accelerated life testing. It has been widely used when the stimulus or acceleration variable (or stress) is thermal (i.e., temperature). It is derived from the Arrhenius reaction rate equation proposed by the Swedish physical chemist Svandte Arrhenius in 1887.

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Lisa Hacker at 03:46, 26 July 2012

2012-07-26T03:46:16Z

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 The Arrhenius life-stress model (or relationship) is probably the most common life-stress relationship utilized in accelerated life testing. It has been widely used when the stimulus or acceleration variable (or stress) is thermal (i.e., temperature). It is derived from the Arrhenius reaction rate equation proposed by the Swedish physical chemist Svandte Arrhenius in 1887.
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Athanasios Gerokostopoulos at 18:09, 16 April 2012

2012-04-16T18:09:26Z

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	\| valign="middle" \|{{Font\|Standard Folio ~~Data~~ Arrhenius-Exponential\|11\|tahoma\|bold\|gray}}		\| valign="middle" \|{{Font\|Standard Folio Arrhenius-Exponential\|11\|tahoma\|bold\|gray}}
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	The ~~ALTA standard folio~~ is ~~used to perform quantitative~~ accelerated life testing ~~data analysis~~. ~~In this analysis,~~ the ~~engineer extrapolates a product’s failure behavior at normal conditions from life data obtained at accelerated~~ stress ~~levels~~. ~~Since products fail more quickly at accelerated stress levels, this sort of analysis allows the engineer to obtain reliability information about a product (~~e.g., ~~mean life, probability of failure at a specific time, etc~~.) in ~~a shorter time~~.		The Arrhenius life-stress model (or relationship) is probably the most common life-stress relationship utilized in accelerated life testing. It has been widely used when the stimulus or acceleration variable (or stress) is thermal (i.e., temperature). It is derived from the Arrhenius reaction rate equation proposed by the Swedish physical chemist Svandte Arrhenius in 1887.
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Nikki Helms at 20:39, 22 March 2012

2012-03-22T20:39:21Z

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	\| [[Image:Book blue.png]]		\| [[Image:Book blue.png]]
	\| [http://reliawiki.~~com~~/index.php/~~Template:Aae#Arrhenius-Exponential~~ the theory textbook...]		\| [http://reliawiki.org/index.php/Arrhenius_Relationship the theory textbook...]
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Nikki Helms at 20:58, 21 March 2012

2012-03-21T20:58:55Z

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Nikki Helms at 20:24, 21 March 2012

2012-03-21T20:24:19Z

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	~~In basic~~ life data analysis, ~~units are tested under normal use conditions in order to obtain information about~~ a product’s failure behavior. ~~In some cases~~, ~~however, it is desirable~~ to obtain ~~this~~ information ~~more quickly than is possible with use level testing~~. ~~For example~~, ~~products with long lifetimes or short periods between design and release~~, ~~as well as products that are operated continuously~~, ~~may produce results too slowly with basic life data analysis~~.		The ALTA standard folio is used to perform quantitative accelerated life testing data analysis. In this analysis, the engineer extrapolates a product’s failure behavior at normal conditions from life data obtained at accelerated stress levels. Since products fail more quickly at accelerated stress levels, this sort of analysis allows the engineer to obtain reliability information about a product (e.g., mean life, probability of failure at a specific time, etc.) in a shorter time.
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Nikki Helms at 20:21, 21 March 2012

2012-03-21T20:21:58Z

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	~~Content 1~~		In basic life data analysis, units are tested under normal use conditions in order to obtain information about a product’s failure behavior. In some cases, however, it is desirable to obtain this information more quickly than is possible with use level testing. For example, products with long lifetimes or short periods between design and release, as well as products that are operated continuously, may produce results too slowly with basic life data analysis.
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Nikki Helms at 20:19, 21 March 2012

2012-03-21T20:19:43Z

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	\| [[Image:Book blue.png]]		\| [[Image:Book blue.png]]
	\| [http://reliawiki.com/index.php/Template:Aae#Arrhenius-Exponential the theory textbook...]		\| [http://reliawiki.com/index.php/Template:Aae#Arrhenius-Exponential the theory textbook...]
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			\| [http://www.reliawiki.com/index.php/No_Article related article(s)...]
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	\| [http://www.reliawiki.com/index.php/~~Temporary_needs_example_page~~ use example(s)...]		\| [http://www.reliawiki.com/index.php/Electronic_Components_Example use example(s)...]
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Nikki Helms at 16:55, 7 March 2012

2012-03-07T16:55:42Z

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	\| valign="middle" \|{{Font\|Standard Folio Data Arrhenius-Exponential\|11\|tahoma\|bold\|gray}}		\| valign="middle" \|{{Font\|Standard Folio Data Arrhenius-Exponential\|11\|tahoma\|bold\|gray}}
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			Content 1
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	~~The <math>pdf<~~/~~math>~~ ~~of the 1~~-~~parameter exponential distribution is given by~~:		\| [http://reliawiki.com/index.php/Template:Aae#Arrhenius-Exponential the theory textbook...]
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	~~<math>f(t)=\lambda {{e}^{-\lambda t}}</math>~~
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	~~It can be easily shown that the mean life for the 1-parameter exponential distribution (presented in detail in Chapter 5) is given by:~~
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	~~<math>\lambda =\frac{1}{m}</math>~~
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	~~thus:~~
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	~~<math>f(t)=\frac{1}{m}{{e}^{-\tfrac{t}{m}}}</math>~~
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	~~The Arrhenius-exponential model <math>pdf</math> can then be obtained by setting <math>m=L(V)</math> in Eqn. (arrhenius).~~
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	~~Therefore:~~
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	~~<math>m=L(V)=C{{e}^{\tfrac{B}{V}}}</math>~~
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	~~Substituting for <math>m</math> in Eqn. (pdfexpm) yields a <math>pdf</math> that is both a function of time and stress or:~~
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	~~<math>f(t,V)=\frac{1}{C{{e}^{\tfrac{B}{V}}}}\cdot {{e}^{-\tfrac{1}{C{{e}^{\tfrac{B}{V}}}}\cdot t}}</math>~~
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	~~\| valign="middle" \| [http://reliawiki.com/index.php/Template:Aae#Arrhenius-Exponential Get More Details...]~~
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Nicolette Young at 17:30, 14 February 2012

2012-02-14T17:30:39Z

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