摘要
报导了近门坎区Ⅰ、Ⅱ、Ⅲ型过载导致随后Ⅰ型裂纹扩展中闭合力、断裂表面粗糙度及裂纹尖端区域残余应力场变化的测试结果，分析讨论了影响裂纹扩展延滞的主要因素。
It was studied that the variations in the crack closure force and the residual stress and fractured surface roughness of Mode Ⅰ fatigue crack propagation in the overloading zone of ModeⅠ,Ⅱ,Ⅲ.The main factors influencing the crack propagation retardation were analyzed and discussed.
出处
《机械强度》
CAS
CSCD
北大核心
1997年第2期47-50,共4页
Journal of Mechanical Strength
基金
国家自然科学基金
关键词
疲劳裂纹扩展
过载效应
闭合效应
延滞机制
fatigue crack propagation,overloading effect,closure effect,residual stress
