Failure Analysis of Rear Stabilizer Rod for Automobile
Received:August 14, 2019  Revised:September 06, 2019
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DOI:10.7643/issn.1672-9242.2019.11.015
KeyWord:rears stabilizer rod  failure analysis  folding defect  fatigue fracture
        
AuthorInstitution
LIU Jing Southwest Technology and Engineering Research Institute, Chongqing , China;Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing , China
FU Yang-fan Southwest Technology and Engineering Research Institute, Chongqing , China;Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing , China
ZHOU Fu Southwest Technology and Engineering Research Institute, Chongqing , China;Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing , China
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Abstract:
      Objective To investigate the fracture failure reasons of rear stabilizer rod for automobile. Methods The failure reasons of rear stabilizer rod for automobile were analyzed from metallographic structure, mechanical property and material through SEM. Results The folding defect occurred in the rolling process at the crack source of the rear stabilizer rod for automobile, which caused stress concentration during the stand test. The folding defect provided favorable conditions for generation of fatigue crack, resulting in fatigue fracture in a short time. Conclusion By improving the quality of the raw material wire purchased by plant, strengthening the rolling process control, increasing the intensity of inspection, as well as controlling and eliminating defective products in advance, the failure of rear stabilizer rod for automobile was effectively eliminated.
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