Arrhenius-Exponential Model: Difference between revisions

Latest revision as of 18:20, 28 September 2015

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Arrhenius-Exponential Model

This example validates the calculations for the Arrhenius-exponential model in ALTA standard folios.

Reference Case

The data set is from Example 7.1 on page 254 in book Life Cycle Reliability Engineering by Dr. Guangbin Yang, John Wiley & Sons, 2007.

Data

Failure Time	Temperature (°C)
2385	85
2537	85
1655	100
1738	100
1025	115
1163	115

Result

For this data set, the Arrhenius life-stress relationship with an exponential distribution is used. The estimated activation energy value is [math]\displaystyle{ \,\!E_{a}=0.323 }[/math]. The acceleration factor from 70°C to 35°C is 3.5.

Results in ALTA

In ALTA, the temperature values given in the book are converted from Celsius to Kelvins, as shown next.

The calculated activation energy is 0.323. The acceleration factor from 70°C (343.15 K) to 35°C (308.15 K) is 3.46 as shown next.

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+This example validates the calculations for the Arrhenius-exponential model in ALTA standard folios.
-This example compares the results for the Arrhenius-exponential model.
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Arrhenius-Exponential Model: Difference between revisions

Latest revision as of 18:20, 28 September 2015

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