WANG Yongguo, LI Zhaoqian, DENG Jianxin, ZHANG Tao

(Shandong University of Technology)

Abstract: The interface cracks of functionally graded ceramic tool have been studied deeply in this paper . Results show that the in-terface cracks , which are mixed ones, always propagate in the direction where there is a large surplus of the energy release.

Key words: functionally graded , ceramic tool , interface , cracks