...hree-dimensional surface topography 三维表面形貌 ; 三维表面形貌 ; 表面形貌 three-dimensional surface crack 三维表面裂纹 three-dimensional surface contouring 三维形貌测量 ..
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三维表面裂纹间的贯通要复杂得多，同时受裂纹切割深度、空间位置影响较大。
The propagation and coalescence of 3d surface cracks are dependent on the crack depth and the crack configuration.
CTOA的测定是通过高速摄影技术，建立裂尖裂纹断面与自由表面的三维关系模型。
CTOA is measured with the built three dimension function model of crack profile of the crack top and free profile through the high-speed photo technology.
通过三维光弹实验测定了轴表面横向半椭圆裂纹的应力强度因子（SIF），并计算了与光弹轴裂纹几何及当地应力相对应的无限大体的SIF，从而求得SIF修正系数。
The SIF and its correction factor of the transverse surface semi-elliptic crack of a photoelastic axle are tested and studied with the method of three dimensional photo-elastics.
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