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Title:Fatigue test and result analysis on a vehicle front axle
Authors: Wang Liang  Chen Guoqiang  Zheng Mingyu  Qin Xuefeng  Chen Wenlin  Chen Li 
Unit: Hefei University of Technology Hefei Automobile Forging Co.  Ltd. 
KeyWords: front axle  fatigue fracture  failure analysis  stress concentration fatigue fracture 
ClassificationCode:TG115.5
year,vol(issue):pagenumber:2017,42(5):119-122
Abstract:
For measuring the fatigue life, a vehicle front axle was tested by platform experimental device and cracked by running 199 thousand times. Then, the failure mode of the axle was determined by fracture surface examination, metallographic analysis and hardness test, and the causes of failure and fracture were analyzed. The results show that the fracture mode of the axle is fatigue fracture, and the cracks originate from the forging flash surface with obvious groove. The additive structural stress concentration formed by the machining groove is the main causes resulting in the fatigue fracture of the front axle. However, processing groove may be produced by the wear of the cutting die, so the cutting die blade should be repaired timely.
Funds:
教育部科学技术研究重大项目(311025)
AuthorIntro:
王梁(1991- ),男,硕士研究生 陈文琳(1963- ),女,博士,教授
Reference:


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