T-H Example - Revision history

Lisa Hacker at 19:03, 18 September 2023

2023-09-18T19:03:28Z

← Older revision		Revision as of 19:03, 18 September 2023
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	<noinclude>{{Banner_ALTA_Examples}}		<noinclude>{{Banner_ALTA_Examples}}
	''This example appears in the [~~[Temperature-Humidity_Relationship#T-H_Weibull\|~~Accelerated ~~Life Testing Data Analysis Reference~~]~~] book~~.''		''This example appears in the [https://help.reliasoft.com/reference/accelerated_life_testing_data_analysis Accelerated life testing reference].''

	</noinclude>		</noinclude>

Richard House at 21:50, 21 September 2012

2012-09-21T21:50:20Z

← Older revision		Revision as of 21:50, 21 September 2012
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	& & \\		& & \\
	\widehat{\phi}=\ & 5630.329851		\widehat{\phi}=\ & 5630.329851
	\end{align}</math>		\end{align}\,\!</math>

	A probability plot for the entered data is shown next.		A probability plot for the entered data is shown next.

Kate Racaza: added link to ALTA book

2012-08-14T02:02:51Z

added link to ALTA book

← Older revision		Revision as of 02:02, 14 August 2012
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	<noinclude>{{Banner_ALTA_Examples}}		<noinclude>{{Banner_ALTA_Examples}}
	</noinclude>The following data were collected after testing twelve electronic devices at different temperature and humidity conditions:		''This example appears in the [[Temperature-Humidity_Relationship#T-H_Weibull\|Accelerated Life Testing Data Analysis Reference]] book.''

			</noinclude>
			The following data were collected after testing twelve electronic devices at different temperature and humidity conditions:

	[[Image:ex1chp9.png\|center\|400px\|]]		[[Image:ex1chp9.png\|center\|400px\|]]

Richard House at 07:42, 7 August 2012

2012-08-07T07:42:36Z

← Older revision		Revision as of 07:42, 7 August 2012
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	<noinclude>{{Banner_ALTA_Examples}}		<noinclude>{{Banner_ALTA_Examples}}
	</noinclude>The following data were collected after testing twelve electronic devices at different temperature and humidity conditions:		</noinclude>The following data were collected after testing twelve electronic devices at different temperature and humidity conditions:
	~~<br>~~
	~~<br>~~
	[[Image:ex1chp9.png\|center\|400px\|]]		[[Image:ex1chp9.png\|center\|400px\|]]
	~~<br>~~
	~~<br>~~
	Using ALTA, the following results were obtained:		Using ALTA, the following results were obtained:

	~~<br>~~
	::<math>\begin{align}		::<math>\begin{align}
	\widehat{\beta }=\ & 5.874395 \\		\widehat{\beta }=\ & 5.874395 \\
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	\widehat{\phi}=\ & 5630.329851		\widehat{\phi}=\ & 5630.329851
	\end{align}</math>		\end{align}</math>


	A probability plot for the entered data is shown next.		A probability plot for the entered data is shown next.


	[[Image:ALTA9probabilityplot.gif\|center\|600px\|Probability plots at the tested combinations.]]		[[Image:ALTA9probabilityplot.gif\|center\|600px\|Probability plots at the tested combinations.]]


	Note that three lines are plotted because there are three combinations of stresses, namely, (398K, 0.4), (378K, 0.8) and (378K, 0.4).		Note that three lines are plotted because there are three combinations of stresses, namely, (398K, 0.4), (378K, 0.8) and (378K, 0.4).

	Given the use stress levels, time estimates can be obtained for a specified probability. A Life vs. Stress plot can be obtained if one of the stresses is kept constant. For example, the following picture shows a Life vs. Temperature plot at a constant humidity of 0.4.		Given the use stress levels, time estimates can be obtained for a specified probability. A Life vs. Stress plot can be obtained if one of the stresses is kept constant. For example, the following picture shows a Life vs. Temperature plot at a constant humidity of 0.4.


	[[Image:ALTA9stressplot.gif\|center\|600px\|Life vs. Temperature plot with humidity fixed at 0.4.]]		[[Image:ALTA9stressplot.gif\|center\|600px\|Life vs. Temperature plot with humidity fixed at 0.4.]]

Richard House at 07:59, 3 August 2012

2012-08-03T07:59:24Z

← Older revision		Revision as of 07:59, 3 August 2012
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	[[Image:ALTA9probabilityplot.gif\|center\|~~550px~~\|Probability plots at the tested combinations.]]		[[Image:ALTA9probabilityplot.gif\|center\|600px\|Probability plots at the tested combinations.]]


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	[[Image:ALTA9stressplot.gif\|center\|~~550px~~\|Life vs. Temperature plot with humidity fixed at 0.4.]]		[[Image:ALTA9stressplot.gif\|center\|600px\|Life vs. Temperature plot with humidity fixed at 0.4.]]

Kate Racaza: updated banner

2012-08-02T01:51:08Z

updated banner

← Older revision		Revision as of 01:51, 2 August 2012
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	{~~\| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;"~~		<noinclude>{{Banner_ALTA_Examples}}
	\|-		</noinclude>The following data were collected after testing twelve electronic devices at different temperature and humidity conditions:
	~~\| valign="middle" align="left" bgcolor=EEEDF7\|[[Image: ALTA_Examples_Banner.png\|400px\|center]]~~
	\|}
	<br>
	The following data were collected after testing twelve electronic devices at different temperature and humidity conditions:
	<br>		<br>
	<br>		<br>
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	\end{align}</math>		\end{align}</math>

	~~<br>~~
	A probability plot for the entered data is shown next.		A probability plot for the entered data is shown next.

	~~<br>~~
	[[Image:ALTA9probabilityplot.gif~~\|thumb~~\|center\|~~300px~~\|Probability plots at the tested combinations.]]		[[Image:ALTA9probabilityplot.gif\|center\|550px\|Probability plots at the tested combinations.]]
	~~<br>~~
	~~<br>~~
	Note that three lines are plotted because there are three combinations of stresses, namely, (398K, 0.4), (378K, 0.8) and (378K, 0.4).		Note that three lines are plotted because there are three combinations of stresses, namely, (398K, 0.4), (378K, 0.8) and (378K, 0.4).

	~~<br>~~		Given the use stress levels, time estimates can be obtained for a specified probability. A Life vs. Stress plot can be obtained if one of the stresses is kept constant. For example, the following picture shows a Life vs. Temperature plot at a constant humidity of 0.4.
	Given the use stress levels, time estimates can be obtained for specified probability. A Life vs. Stress plot can be obtained if one of the stresses is kept constant. For example, the following picture is a Life vs. Temperature plot at a constant humidity of 0.4.
	~~<br>~~
	[[Image:ALTA9stressplot.gif~~\|thumb~~\|center\|~~300px~~\|Life vs. Temperature plot with humidity fixed at 0.4.]]		[[Image:ALTA9stressplot.gif\|center\|550px\|Life vs. Temperature plot with humidity fixed at 0.4.]]
	~~<br>~~

Chris Kahn at 09:24, 27 July 2012

2012-07-27T09:24:36Z

← Older revision		Revision as of 09:24, 27 July 2012
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	{\| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;"		{\| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;"
	\|-		\|-
	\| valign="middle" align="left" bgcolor=EEEDF7\|[[Image: ~~ALTA-Examples-banner~~.png\|400px\|center]]		\| valign="middle" align="left" bgcolor=EEEDF7\|[[Image: ALTA_Examples_Banner.png\|400px\|center]]
	\|}		\|}
	<br>		<br>

Nikki Helms: Created page with '{| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;" |- | valign="middle" align="left" bgcolor=EEEDF7|[[Image: ALTA-Exa…'

2012-03-21T21:53:34Z

Created page with '{| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;" |- | valign="middle" align="left" bgcolor=EEEDF7|[[Image: ALTA-Exa…'

New page

{| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;"
|-
| valign="middle" align="left" bgcolor=EEEDF7|[[Image: ALTA-Examples-banner.png|400px|center]]
|}
 
The following data were collected after testing twelve electronic devices at different temperature and humidity conditions:
 
 
[[Image:ex1chp9.png|center|400px|]]
 
 
Using ALTA, the following results were obtained:

 
::<math>\begin{align}
\widehat{\beta }=\ & 5.874395 \\
& & \\
\widehat{A}=\ & 0.000060 \\
& & \\
\widehat{b}=\ & 0.280599 \\
& & \\
\widehat{\phi}=\ & 5630.329851
\end{align}</math>

 
A probability plot for the entered data is shown next.

 
[[Image:ALTA9probabilityplot.gif|thumb|center|300px|Probability plots at the tested combinations.]]
 
 
Note that three lines are plotted because there are three combinations of stresses, namely, (398K, 0.4), (378K, 0.8) and (378K, 0.4).

 
Given the use stress levels, time estimates can be obtained for specified probability. A Life vs. Stress plot can be obtained if one of the stresses is kept constant. For example, the following picture is a Life vs. Temperature plot at a constant humidity of 0.4.
 
[[Image:ALTA9stressplot.gif|thumb|center|300px|Life vs. Temperature plot with humidity fixed at 0.4.]]