锯齿（Serration）是指一个尖锐或是类似齿的物体，侧面有一排像锯子一様，有许多突起的边缘。锯齿的切割面和被切割物体有多个接触点，其接触面积比平滑的切割面要小，因此产生的应力也会比较大，会让被切割物体上出现数个破口，锯齿再往复移动，使破口加大，产生切割的效果[1]。
参考资料
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