The initial crack length of engineering components usually be defined subjectively but not objectively.
工程构件的初始裂纹长度是人为规定的，不具有客观性。
The distribution function of crack length at given time can be calculated by integration of the initial crack length distribution and the transition function of Markoff process.
文中导出了用初始裂纹长度的分布及马尔可夫转移概率密度函数计算给定时刻裂纹长度分布的积分公式。
Under the condition of the statistical parameters related to fatigue life of the structure, such as the initial crack length, the material toughness used, and the load acting on the structure being g…
在给定与疲劳寿命有关的各参数条件下求得动态可靠性曲线，从而在结构设计中根据可靠性要求确定或选择设计参数。
Meanwhile, the influences of pipeline internal pressure, wall thickness, crack arrest length and initial crack velocity on the crack driving force (crack propagation) are further studied.
进而分析了管道内压、壁厚、裂纹止裂长度和初始裂纹速度对裂纹驱动力(也即裂纹扩展)的影响。
Finally, the influences of some stochastic parameters such as initial crack length on the reliability are analysed.
并探讨了初始裂纹等随机参量的变化对可靠性的影响。
It is concluded that the W-type specimen is reasonable and feasible the measurement of fracture toughness in the commonly used length range of initial crack and rabbin.
研究表明，在常用的裂纹长度和韧带长度范围内，W型试样在断裂韧度的测量中是合理而可行的。
The initial damage and the cumulative damage during operation are quantitatively measured with the main fatigue crack length in the structure.
首先将结构的初始损伤、使用过程中的损伤累积用主裂纹长度的分布加以定量描述。
The initial damage and the cumulative damage during operation are quantitatively measured with the main fatigue crack length in the structure.
首先将结构的初始损伤、使用过程中的损伤累积用主裂纹长度的分布加以定量描述。
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