The portions of the crack near the saw cut and along the edges are closed in relation to the center of the crack face .
接近锯切口和沿着边缘的裂纹部分相对于裂纹面中心而肯定是闭合的。
I research on two methods of crack width calculating, one is through the center line and left-right edges, the other only through left-right edges, and make the latter as the method of this project.
对由中心线和左右边缘求裂缝宽度和由左右边缘求裂缝宽度两种方法进行了研究，采用后者作为本课题的计算方法。
High local loads at leading edges, cobbles or doubling of the strip end (tail end pinching), exceed the shear strength of the shell material and initiate the crack.
过大的局部超负荷超过轧辊外层的抗剪切强度时则会引发裂纹。
High local loads at leading edges, cobbles or doubling of the strip end (tail end pinching), exceed the shear strength of the shell material and initiate the crack.
过大的局部超负荷超过轧辊外层的抗剪切强度时则会引发裂纹。
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