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| Acceleration Factor Estimation Method of PCB |
| Received:November 08, 2011 |
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| DOI： |
| KeyWord:reliability estimation of acceleration factor PCB equivalent failure rate |
| Author | Institution |
| LI Lou-de |
School of Reliability and System Engineering，Beihang University，Beijing，China |
| YUAN Hong-jie |
School of Reliability and System Engineering，Beihang University，Beijing，China |
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| Abstract: |
| It is difficult to determine the acceleration factor of electric device with long storage life which relies on plenty of experiment data. A new method to estimate the acceleration factor of electric device was put forward and the related equivalent estimation model was deduced. The method estimated the acceleration factor by using the acceleration factors and average failure rates of its sub-units based on the theory of equivalent failure rate. The estimated acceleration factor of electric device can be a reference for the accelerating test value. On the other hand, it can expend the quantity of information for assessing the storage life of the electric device. At last, the acceleration factor of a PCB was estimated by using the proposed method under the influence of temperature. The reasonable estimated result proved that the method proposed is valid. |
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