STUDY ON DETERMINING K_(Ic) OF CERAMIC MATERIALS BY INDENTATION MICROFRACTURE  

作　　者：宋显辉 

出　　处：《Journal of Wuhan University of Technology(Materials Science)》1995年第1期48-52,共5页武汉理工大学学报（材料科学英文版）

摘　　要：In this paper,by studying the accuracy of indentation microfracture,it is pointed out that the residual stress in the indentation site plays a critical role,which makes the theoretical analysis extremely difficult and the indentation microcracks slowly expaned, therefore, affects the accuracy of measurement. It is concluded that according to the infrastructure analysis it is not acceptable to estimate completely the accuracy of determining K? by indentation microfracture from the point of view of classical fracture mechanics.In this paper,by studying the accuracy of indentation microfracture,it is pointed out that the residual stress in the indentation site plays a critical role,which makes the theoretical analysis extremely difficult and the indentation microcracks slowly expaned, therefore, affects the accuracy of measurement. It is concluded that according to the infrastructure analysis it is not acceptable to estimate completely the accuracy of determining K? by indentation microfracture from the point of view of classical fracture mechanics.

关 键 词：indentation  microfractitre residual stress MICROCRACK 

分 类 号：TQ174[化学工程—陶瓷工业]