Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A Universal Relation for Edge Chipping From Sharp Contacts in Brittle Materials and It's Use as a Simple Means of Toughness Evaluation

Published

Author(s)

Herzl Chai, Brian R. Lawn

Abstract

An analysis of chipping fracture in brittle solids is presented. Cracks are introduced into the edges of selected materials, including soda-lime glass and fine-grain ceramics, using a Vickers indenter in monotonic loading. The ensuing chip morphology is examined and shown to exhibit a certain geometrical similarity, independent of material properties. A simple universal relation is derived for the critical chipping load in terms of indent location and material toughness. It is suggested that the method could be used as a simple and quick method for evaluating toughness values for glasses and fine-grain brittle materials.
Citation
Acta Materialia
Volume
55

Keywords

brittle ceramics, edge chipping, toughness, Vickers indentation

Citation

Chai, H. and Lawn, B. (2006), A Universal Relation for Edge Chipping From Sharp Contacts in Brittle Materials and It's Use as a Simple Means of Toughness Evaluation, Acta Materialia, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=850142 (Accessed May 18, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created November 24, 2006, Updated February 19, 2017