Abstract��The fatigue limit of the automotive frame steel include WL700�� WL590 and WL510 are investigated. In order to take the thickness effect into account�� two series of WL510 samples with 6 mm and 8 mm thickness respectively are selected. The fatigue strengths are calculated by one and two dimensional up-and-down method under different probability of failure and believe. The result shows that the relative deviation of fatigue strength using one dimensional method is 4 times larger than two dimensional method. In addition�� more experienced data brings more accurate result. The relative deviation of fatigue strengths become larger when the the sample quantity is small. The Two dimensional method can save many specimens and testing time under the same accuracy requirement. In the other aspect�� it can enhance accuracy of the test result with the same number of specimens compares with the traditional one.
Ѧ �������Ľ�. ���������ִ�ͳ�������Ͷ�ά������ƣ������Ա�[J]. �й������ڿ���, 2017, 35(2): 7-11.
XUE Huan��PENG Wen-jie. Comparison between one and two dimensional up-and-down method on automotive frame steel. Chinese Journal of Iron and Steel, 2017, 35(2): 7-11.
2017, Vol. 35 
