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Edge Chipping of Brittle Materials: Effect of Side-Wall Inclination and Loading Angle

Published

Author(s)

H Chai, Brian R. Lawn

Abstract

An earlier analysis of chipping fracture in brittle solids is here extended to include the case of blocks with inclined side faces and non-normal contact loading. The simple relation PF = Kch3/2 for the critical chipping load PF in terms of indent location h and material toughness Kc is preserved, with angular coordinates simply incorporated into the coefficient. Chipping fracture tests using a Vickers indenter near the edges of glass blocks with non-orthogonal faces is used to validate the analysis. Implications of the results in relation to practical engineering, biomechanical and anthropological structures are indicated.
Citation
Acta Materialia
Volume
145

Keywords

angular coordinates, brittle ceramics, edge chipping, inclined loading, toughness, Vickers indentation

Citation

Chai, H. and Lawn, B. (2007), Edge Chipping of Brittle Materials: Effect of Side-Wall Inclination and Loading Angle, Acta Materialia, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851040 (Accessed April 22, 2021)
Created July 23, 2007, Updated February 19, 2017