Journal of the Ceramic Society of Japan
Online ISSN : 1882-1022
Print ISSN : 0914-5400
ISSN-L : 0914-5400
Properties (structural and functional)
Computation of the Stress Intensity Factor and COD for Submicron Sized Indentation Cracks
Gerold A. SCHNEIDERTheo FETT
Author information
JOURNALS FREE ACCESS

2006 Volume 114 Issue 1335 Pages 1044-1048

Details
Abstract

The first part of the paper deals with the computation of stress intensity factors for pyramidal indentation cracks with a ratio of crack length c to indentation half-diagonal a between 1 and 2. The residual stress field due to quasi-plastic deformation below the indenter is described by using the Hill model of an expanding sphere. It is found that the proportionality factor in the relation for KIc decreases with c/a→1 and confirms experimental results with nanoindents on sapphire and fused quartz. In the second part, the crack opening displacement of such cracks is determined.

Information related to the author
© 2006 The Ceramic Society of Japan
Previous article Next article
feedback
Top