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Residual Stress Fields at the Surface of Sharp Pyramid Indentations
Author(s) -
Zeng Kaiyang,
Giannakopoulos Antonios E.,
Rowcliffe David,
Meier Patrick
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02390.x
Subject(s) - residual stress , materials science , indentation , composite material , finite element method , knoop hardness test , ultimate tensile strength , stress field , pyramid (geometry) , stress (linguistics) , optics , indentation hardness , structural engineering , microstructure , physics , philosophy , engineering , linguistics
This paper describes an experimental measurement of the residual stress field around Berkovich and Knoop indentations on the surface of soda‐lime glass. The isostress contours of both the residual tensile and compressive stress are presented. The results are compared with similar measurements around Vickers indentations on the same glass. The residual stress field around all three different shapes of indentations is clearly nonequal biaxial, with characteristic differences in the form of the stress contours that relate to each specific shape. The results for Berkovich indentation are compared with finite element (FEM) numerical calculations. Some general conclusions related to the sharp indentations are deduced from this study.