A Universal Relation for Edge Chipping From Sharp Contacts in Brittle Materials and It's Use as a Simple Means of Toughness Evaluation
Herzl Chai, Brian R. Lawn
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.
and Lawn, B.
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 December 11, 2023)