surface spall

常见例句

The type of failure in operation is no longer the fatigue spall, but starts witt the surface damage.
使用中的失效形式已不是疲劳剥落，大多是起始于表面损伤一类的故障。
Variable intensity of fatigue lines may be seen in the deep areas of the spall indicating the propagation direction from the core to the barrel surface.
从断裂表面上我们可以看到许多疲劳截面的传播途径。
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Propagation develops within the working surface of the roll, gradually increasing in depth and width followed by a large surface spall of the overlying barrel surface.
这种断裂首先是在工作层中产生的，进而逐渐往辊身方向变深变宽，最终导致辊身大面积的剥落。
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