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《Diesel Engine》 2019-05
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Fracture Failure Analysis of Single-Throw Crankshaft Fatigue Test Piece for a Diesel Engine

Xu Congcong;Jiao Yafei;Liu Kai;Wu Limin;Liang Gang;Li Liting;Shanghai Marine Diesel Engine Research Institute;  
During the bending fatigue bench test of a diesel engine single-throw crankshaft, abnormal fracture occurred at the corner of the crankshaft. A fault tree for fatigue failure of crankshaft was established. The main reasons are investigated from the aspects of excessive test load, insufficient strength of crankshaft structure and defects of crankshaft manufacturing. And the main reason for the failure at the corner of the single-throw turned out to be oxidative corrosion pits on the surface of the corner. The research provides good reference to the design, manufacturing, and quality acceptance of crankshafts.
【CateGory Index】: TK423
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1 Ji Zhanguo1,Yin Tinglin1,Yin Fangfang1,Wang Yan1,Li Jing2(1.Changchun Research Institute for Testing Machines Co.,Ltd.Changchun 130012,Jilin,China;2.Changchun Kuancheng District Library,Changchun 130051,Jilin,China);Development of Microcomputer-Controlled Crankshaft Fatigue Testing Rig[J];工程与试验;2009-04
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