EVALUATION BY INDENTATION OF FRACTURE-TOUGHNESS OF CERAMIC MATERIALS

被引：164

作者：

LIANG, KM ^{[1
]}

ORANGE, G ^{[1
]}

FANTOZZI, G ^{[1
]}

机构：

[1] INST NATL SCI APPL,GEMPPM,F-69621 VILLEURBANNE,FRANCE

来源：

JOURNAL OF MATERIALS SCIENCE | 1990年 / 25卷 / 1A期

关键词：

D O I：

10.1007/BF00544209

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A transition fracture mode from Palmqvist to median has been observed in a number of ceramic materials. A new expression to determine the fracture toughness (KIC) by indentation is presented. The KIC values calculated by this formula are independent of the crack profile (median or Palmqvist) and of the applied load. This formula has been obtained by modifying the universal curve of Evans and Charles to incorporate Palmqvist and median cracks over a wide range of loads in the case of brittle materials with different mechanical properties (elastic properties: E, v, KIC). © 1990 Chapman and Hall Ltd.

引用

页码：207 / 214

页数：8

共 28 条

[1] A CRITICAL-EVALUATION OF INDENTATION TECHNIQUES FOR MEASURING FRACTURE-TOUGHNESS .1. DIRECT CRACK MEASUREMENTS [J].