کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
805722 | 1468262 | 2012 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Physics of failure as a basis for solder elements reliability assessment in wind turbines Physics of failure as a basis for solder elements reliability assessment in wind turbines](/preview/png/805722.png)
Traditionally assessment of reliability of electrical components is done by classical reliability techniques using failure rates as the basic measure of reliability. In this paper a structural reliability approach is applied in order to include all relevant uncertainties and to give a more detailed description of the reliability. A physics of failure approach is applied. A SnAg solder component used in power electronics is used as an example. Crack propagation in the SnAg solder is modeled and a model to assess the accumulated plastic strain is proposed based on a physics of failure approach. Based on the proposed model it is described how to find the accumulated linear damage and reliability levels for a given temperature loading profile. Using structural reliability methods the reliability levels of the electrical components are assessed by introducing scale factors for stresses.
► Physics of failure as a basis for reliability assessment.
► Failure mechanism based on component microstructure.
► SnAg solder fatigue and damage modeling in Wind Turbines.
► Structural reliability techniques for electrical components reliability assessment.
► Scale factor estimation for temperature loadings.
Journal: Reliability Engineering & System Safety - Volume 108, December 2012, Pages 100–107