Residual fatigue strength of 48MnV crankshaft based on safety factor
来源期刊：中南大学学报(英文版)2005年第z2期
论文作者：王翔 陈铭 浦耿强 王成焘
文章页码：145 - 147
Key words：48MnV crankshaft； residual fatigue strength； safety factor
Abstract: Residual fatigue strength of 48MnV crankshaft was studied and analyzed based on safety factor. Three different status crankshafts were used to the hop-up tests, which maintain new after 500h hop-up tests and after 1000h hop-up tests. Then, crankshafts were cut into unit cranks. The unit cranks were used to do endurance bending tests to get the residual fatigue strength. Finally, the results were analyzed based on safety factor. The results show that safety factor of crankshaft descends a little with the increase of the running time, and the residual safety factor is still much bigger than the endurable safety factor. Furthermore, after the crankshaft accomplishes a full life cycle, the residual fatigue strength of the crankshaft is enough to remanufacture and fulfill the next life cycle.
