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- W2385597792 abstract "The result of the fatigue fracture was different from the actual work condition in the simulation of the factual tooling position under the condition that Q450NQR1 steel was used as base plate,B-grade steel(top center plate) was used as web plate.To solve the problem,a three-point bending test was put forward.The fatigue cracks spreaded laterally and the fatigue properties of the lap welded joints of B-grade steel/Q450NQR1 were investigated.The test result shows that the fatigue cracks of the improved sample mostly occurrs on the side of B-grade steel that is corresponding to the situation of the actual work condition of the freight train.The fatigue strength of original butt joints,blasting shot joint,sanding joint are 201.89 MPa,225.36 MPa,232.69 MPa,respectively under the condition that cycle index is 2 ×106,fraction surviving is 95%,confidence is 90%.The fatigue properties of the lap welded joints of the B-grade steel/Q450NQR1 greatly improve through treating surface with mechanically polishing and blasting shot." @default.
- W2385597792 created "2016-06-24" @default.
- W2385597792 creator A5084891376 @default.
- W2385597792 date "2010-01-01" @default.
- W2385597792 modified "2023-09-23" @default.
- W2385597792 title "Study on Fatigue Properties of Lap Welded Joints of B-grade Steel and Q450NQR1" @default.
- W2385597792 hasPublicationYear "2010" @default.
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