“压力容器缺陷评定规范”课题中设计了一种高应变异形试板,用来进行静载拉伸及疲劳试验,以研究高应变区的断裂特性及疲劳规律。为更好的了解裂纹的扩张过程及变化,我们高速摄影组参加并采用显微摄影的方法,对此进行了有关的试验研究。 “Pressure vessel defect assessment criteria” project designed a high strain profile test board, used for static load elongation and fatigue test to study the high strain zone fracture characteristics and fatigue law. To better understand the process of crack expansion and changes, our high-speed photography group to participate in and adopt the method of micro-photography, the relevant experimental study.