The variation of the shape of cracks with the crack length was investigated.
测量了表面裂纹形状随裂纹长度的变化规律。
The single lap joint fails when the crack length reaches to the critical size.
当裂纹扩展到临界尺寸时，接头会迅速破坏。
The initiation life, growth life and crack length distributions are affected by the grain size.
晶粒尺寸对形成寿命、扩展寿命和裂纹长度的分布特性都有影响。
The revision of crack length is systematically studied.
对裂纹长度的修正作了系统的研究。
Through ct image analysis, the width, length and direction of crack are gained.
CT图像分析可以获得裂纹宽度、长度、方位等定量化参数。
Meanwhile, with the increase of original crack length, the bearing capacity of pipeline is degraded.
裂纹原始长度越大，管道承载能力越低。
Meanwhile, with the increase of original crack length, the bearing capacity of pipeline is degraded.
裂纹原始长度越大，管道承载能力越低。
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