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 October 20, 2025)
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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)
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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
Pub Type
Journals
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Keywords
brittle ceramics, edge chipping, toughness, Vickers indentation
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Created November 24, 2006, Updated February 19, 2017