球压法在线评价脆性材料的强度特性和残余应力

无机材料学报

球压法在线评价脆性材料的强度特性和残余应力

包亦望; 陈志城; 苏盛彪

中国建筑材料科学研究院北京 100024

收稿日期:2001-06-04 修回日期:2001-07-16 出版日期:2002-07-20 网络出版日期:2002-07-20

In-situ Evaluation of Strength Properties and Residual Stresses of Brittle Materials with Spherical Indentation

BAO Yi-Wang; CHEN Zhi-Cheng; SU Sheng-Biao

China Buiding Materials Academy; Beiging 100024; China

Received:2001-06-04 Revised:2001-07-16 Published:2002-07-20 Online:2002-07-20

摘要/Abstract

摘要： 针对接触应力和压痕临界载荷的应力分布,通过应力梯度效应讨论分析了产生球压裂纹中的几个传统强度理论无法解释的问题.利用均强度准则提出了一种脆性材料局部强度和表面残余应力的压痕测试方法,并建立了一种简便的强度保证试验技术,对脆性构件的非破坏性能评价有实用意义.

关键词: 球压法, 局部强度, 保证试验, 脆性材料

Abstract: The contact stress and the critical stress distribution were analyzed, and some paradoxes related to contact crack initiation were explained through the effect of stress gradient. Based on the Mean-Strength criterion, a testing method for determining the local strength and residual stress in brittle materials was developed. And also a simple technique of proof test was created, that is useful for non-destructive evaluation of the strength for brittle components.

Key words: sphere indentation, local strength, proof test, brittle materials

中图分类号:

TH878

包亦望,陈志城,苏盛彪. 球压法在线评价脆性材料的强度特性和残余应力[J]. 无机材料学报.

BAO Yi-Wang,CHEN Zhi-Cheng,SU Sheng-Biao. In-situ Evaluation of Strength Properties and Residual Stresses of Brittle Materials with Spherical Indentation[J]. Journal of Inorganic Materials.

[1]	包亦望, 刘正权. 钢化玻璃自爆机理与自爆准则及其影响因素[J]. 无机材料学报, 2016, 31(4): 401-406.
[2]	包亦望,孙立. 脆性材料在双向应力下的断裂和失效研究[J]. 无机材料学报, 1998, 13(6): 847-852.