裂纹尖端张开位移 meaning in English

crack tip opening displacement

Test method for crack - tip opening displacement measurement of metallic materials
金属材料裂纹尖端张开位移试验方法
Research about ctod and its components 8 " , " shows that the direction angle of ctod vector is identical with the fracture angle of void - mode fracture , which is obtained through experiments , and it is also identical with the result got by peak value line of stress triaxiality . besides , 8 i " was compare with vgc as criterion for initiation of void - mode fracture
对裂纹尖端张开位移ctod及其张开型分量~ 1和剪切型分量~ 11的分析表明，在试件发生韧窝型断裂时，按照圆弧裂纹中ctod矢量的垂直方向预测的断裂角与试验测得的断裂角符合较好，与三轴度脊线预计的结果也比较一致。