The initial crack size was assumed through the visual inspection and the ultrasonic detection method.
在应用断裂力学时，采用了观测和超声波探测方法确定初始裂纹尺寸。
The fatigue crack growth curve from initial crack size till fatigue failure is simulated step by step.
循环续循环模拟计算出裂纹从初始长度一直到疲劳破坏的扩展曲线。
Fatigue life prediction from the initial crack size to failure based on long crack propagation at different zones of welded joint was made by using j.
以焊接处微观结构缺陷尺寸作为初始裂纹尺寸，采用基于裂纹闭合的全寿命预测模型，以焊接区域不同位置的长裂纹扩展速率曲线作为基线，利用J。
Aim To study the critical crack and initial permissible crack size of gun tube.
目的研究火炮身管的临界裂纹和初始允许裂纹尺寸。
Results Using the established mathematical model, with some data of an antiaircraft tubes, critical crack and initial permissible crack size of the antiaircraft gun tube were worked out.
结果利用建立的数学模型，结合某高炮身管的有关数据，计算出了该炮身管的临界裂纹和初始允许裂纹尺寸。
The result show that the size of equivalent initial surface crack is less than 19.7to 22.5 percent of surface corrosion pit size which have the same life.
结果发现，把腐蚀坑等效为具有相同寿命的表面裂纹时，等效表面裂纹的尺寸比对应腐蚀的尺寸小19.7% - 22.5%。
The result show that the size of equivalent initial surface crack is less than 19.7to 22.5 percent of surface corrosion pit size which have the same life.
结果发现，把腐蚀坑等效为具有相同寿命的表面裂纹时，等效表面裂纹的尺寸比对应腐蚀的尺寸小19.7% - 22.5%。
应用推荐