摘要
本文阐述了疲劳裂纹闭合的四种诱发机制,介绍了疲劳裂纹闭合现象测量的几种方法并结合作者的工作进行了评述.文中详细地介绍和探讨了材料、应力比、试样几何尺寸、环境及载荷谱等因素对裂纹闭合现象的影响,指出了目前研究工作中存在的问题.并对今后开展研究工作的方向提出了看法.
Four mechanisms of fatigue crack closure,crack closure parameters and their measurements are discussed and commented on the basis of an introduction to the fatigue crack closure phenomenon.The effects of materials,stress ratios,specimen geometries,enviroments and load spectrum on the behaviors of fatigue crack closure are extensively discussed.The cur- rent situation and the problems remained to be solved hereafter in this field are discussed as well.
出处
《实验力学》
CSCD
北大核心
1989年第2期103-126,共24页
Journal of Experimental Mechanics
关键词
疲劳
裂纹
闭合
疲劳力学
机械零件
Fatigue crack growth
Crack closure
Crack opening
Stress intensity factor
