Fractal Microstructure of Fracture Surfaces and Fracture Energy of Metals

查看全文 作　　者：Shi, DW;Jiang, J;Lung, CW;Liu, HZ;Lou, TP;Liu, HB 机构地区：[1]Chinese Acad Sci, Inst Met Res, Int Ctr Mat Phys, Shenyang 110015, Peoples R China;[2]Chinese Acad Sci, Inst Met Res, State Key Lab RSA, Shenyang 110015, Peoples R China; 出　　处：《Journal of Materials Science & Technology》索引1997年第13卷第6期,共4页 摘　　要：Using a fractat model, we give a new interpretation of the reversed sigmoidal curves of fracture surface profile length obtained in some experiments. It is pointed out that a single parameter (fractal dimension D) is not sufficient to characterize a fractal curve completely. It is shown that the initiator length L0 is also important to characterize a fractal curve. We have derived a formula which correlate the fracture energy with the fractal parameters of the fracture surfaces and analyzed some experimental data. 关 键 词：Fractal Microstructure of Fracture Surfaces and Fracture Energy of Metals OO