Comparative Measurement of Indentation Fracture Toughness with Berkovich and Vickers Indenters
作者:
Rodney D. Dukino,
Michael V. Swain,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 12
页码: 3299-3304
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb04425.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Measurements of the load dependence of the radial crack size with Vickers and Berkovich indenters are compared for a range of materials. It is found that the extent of radial cracks was slightly larger for the Berkovich than for the Vickers indenter. The observations reveal that cracks from a Berkovich indenter are best described by an expression developed by Laugier combined with a modification proposed by Ouchterlony to account for the number of radial cracks. It was also found that the Berkovich indenter, which offers advantages for ultramicroindentation, gave more consistent toughness values at lower loads than a Vickers indenter.
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