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]。
![Thumb](http://upload.wikimedia.org/wikipedia/commons/thumb/1/16/Tiger_shark_serration.jpg/640px-Tiger_shark_serration.jpg)
参考资料
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