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疲劳是一门实验性的学科,从它一开始诞生到现在的一百多年中,其每一步发展都离不开实验。可以说,随着实验技术(其中主要是试验机)和实验方法(主要是统计方法)的发展,使人们对疲劳现象的认识深化了。从实验室获得的关于材料标准试样的性能和零部件(乃至结构)的性能,可以预言实际使用中的疲劳强度和疲劳寿命,这对社会生产起了巨大的推动作用。应该说,疲劳学科的理论体系还远未建立,现在还处于积累资料(运行资料和实验室资料两个方面)阶段,目前的描述是唯象学的,所有的结论(强度设计
Fatigue is an experimental discipline, from its inception to the present one hundred years, every step of its development can not be separated from the experiment. It can be said that with the development of experimental techniques (mainly test machines) and experimental methods (mainly statistical methods), people’s understanding of the phenomenon of fatigue deepens. The performance obtained from the laboratory on the performance of standard samples of materials and the performance of components (or even structures) can predict the fatigue strength and fatigue life in actual use, which has played a significant role in promoting social production. Should be said that the theoretical system of fatigue discipline is far from established, and now is still in the accumulation of information (both operational data and laboratory data) stage, the current description is phenomenological, all the conclusions (strength design