Failure Prediction of Radar Power Module Based on Physics of Failure and Monte Carlo
ZHAO Ning
ZHANG Yu
HUANG Darong
TANG Huan
TANG Min
LI Tianhong
Abstract：To solve the problem of radar power module failure due to vibration fatigue caused by vibration stress for a long time,a radar power module failure prediction method based on physics of failure(PoF)and Monte Carlo was proposed.Firstly,the finite element analysis(FEA)digital prototype model of the radar power module was established according to the hardware structure and product materials of the radar power module,and then the vibration boundary load of the radar power module was applied to analyze the vibration stress,and the rationality of the vibration stress analysis was verified by comparing the modal experiment results.Finally,considering the uncertainty of radar power module parameters,combined with PoF and Monte Carlo sampling for failure prediction,the life distribution of each potential fault of radar power module was obtained.The results showed that the life expectancy of 16 power supply boards was the shortest under vibration stress.Compared with the actual fault prediction results,the rationality of the proposed algorithm is verified,which has a good application prospect for the fault prediction of radar power module in the future,and promotes the development of fault prediction technology based on PoF model.
Keywords：power moduleanalysis of vibrationfailure predictionphysics of failurevibration stress
Publication Date：2024-03-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 97-104 )