This paper takes the failure analysis of the fracture of the exhaust pipe of a low-temperature radiator of an electric vehicle during the road test process,the fracture electron microscopy analysis of the exhaust pipe was used to determine the crack properties and the preliminary cause of the fracture.then,using the fault tree analysis(FTA)tool,the cause of the risk of external collision was determined through the production process troubleshooting;through infrared spectroscopy,ash detection and electron microscopy analysis of raw materials,the reason for the use of recycled materials was determined;through the stress simulation analysis of the exhaust pipe of the radiator and the axial strength test of the radiator,the cause of the structural defect was determined.In view of the above reasons,corresponding corrective measures were formulated to solve the fault problem of broken radiator snorkel.It has certain guiding significance for automobile practitioners in the design,raw material use and failure analysis of similar nylon structures on the whole vehicle.
关键词
低温散热器/断裂/电镜分析/故障树分析法/红外光谱检测/应力模拟分析
Key words
Low Temperature Radiator/Fracture/Electron Microscopy Analysis/Fault Tree Analysis/Infrared Spectroscopy Detection/Stress Simulation Analysis
维普
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