If the failure is defined as the final fracture of a component, then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading.
如果都把一个构件的最终断裂作为疲劳破坏的定义，则S - N曲线和裂纹扩展率曲线均是反映金属在疲劳载荷作用下的基本材料特性。
The L2 vertebral strength obtained with the FEM was 2154 /- 685 N, and the model could detect preexisting vertebral fracture better than measurement of bone mineral density.
通过非线性有限元模型获得的L2脊椎强度为2154 /- 685 N，相比骨密度测量，这个模型可以更好的发现之前存在的脊椎骨折。
The unsuitable carbonitriding process, internal oxidation, over deep depth of carbonitrided layer and crust like C N compound on the surface are the main reasons to cause fracture.
碳氮共渗工艺选择不当，共渗层过深，表面出现壳状碳氮化合物、内氧化等缺陷组织是造成其断裂的主要原因。
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