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| 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 given below. | | 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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| [[image:Arrhenius Exp_QPC.png|center]] | | [[image:Arrhenius Exp_QPC.png|center]] |
Revision as of 23:20, 9 June 2014
ALTA_Reference_Examples_Banner.png
Validate the calculation of Arrhenius-Exponential model.
Reference Case
Data 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 are converted from degree C to degree K.
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.
