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Failure Analysis and Measures of Improvement for Laminated Spring of Alter-cross Section
ipc-8-95/9530788

Authors

Li Qiu Zhang - Inst. of Dong Feng Automobile Engineering Research
Wei Li - Inst. of Dong Feng Automobile Engineering Research

Abstract

Early fatigue failure often occurs on laminated spring of alter-cross section during in-vehicle service or dais testing. After thorough analysis it is found out that there are a variety of causes for such failure: those related to material, heat treatment, shot blasting, assembling, etc. In this paper, measures of improvement with regard to these causes of failure are put forward, practically resulting in substantial increase of fatigue life length of fewer-leaf spring.

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