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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 |
Author | Institution |
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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