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This paper presents a fundamental method to evaluate power cycle fatigue life of power device. Coupled electrical-thermal analysis is performed to obtain the distribution of temperature due to electric current. Then, thermal-mechanical analysis is carried out to calculate inelastic strain range generated in a solder joint. In addition, the fatigue evaluation for aluminum wire bonding was carried out...
This paper presents a fundamental method to evaluate thermal fatigue life of power module. Coupled electrical-thermal analysis is performed to obtain the distribution of temperature due to electric current. Then, thermo-mechanical analysis is carried out to calculate inelastic, aluminum wire bonding was done. Crack path simulation technique was used to evaluate total fatigue life of solder joint and...
For power devices, the reliability of thermal fatigue induced by power cycling has been prioritized as an important concern. Because, the power device like the converter system is the key in vehicle applications. So, high reliability is demanded by reduction in the size and high power capacity. Therefore shortening reliability evaluation is demanded using finite element method (FEM). Since power cycling...
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