摘要
在ＬＹ１２ＣＺ铝合金板材的恒幅和变幅加载疲劳试验基础上，结合图象处理和计算机技术，导出了一种新的由断口反推机件服役载荷的反推法，并将反推结果与实验数据作了比较．同时对影响反推精度的有关参数进行了重要度分析．利用该反推法可以获得包含载荷顺序效应在内的机件有效载荷谱．
One of the most important phases in mechanical design and failure analysis is to obtainservice loads accurately. Based on fatigue tests of LY12CZ aluminum alloy sheets for bothconstant loading and programmed loading. a new method has been proposed for restoring service loads of a component from its fracture surface. With this method, the effects of loadingsequence can be taken into account of . The restored loads are compared with the actual ones.Parameters affecting results are evaluated according to their sensitivity values. In certain conditions, the restoring procedure can also be accomplished automatically by using image processing and computer techniques.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1996年第2期121-125,共5页
Journal of Beijing University of Aeronautics and Astronautics
关键词
载荷谱
疲劳断裂
断口检查
失效分析
loading spectrum
fatigue fracture
fracture surface examination
failure analysis
