Analytical approaches to stress intensity factor evaluation for indentation cracks
Analytical approaches to stress intensity factor evaluation for indentation cracks
In the present paper, an analytical solution for the stress intensity
factor in the case of cracks produced by Vickers indenters
has been extended to the cases of triangular indenters, i.e., Berkovich
and cube-corner. According to the adopted approach,
median/radial cracks produced by indentations are modeled as
loaded by either a point-force or a symmetric disk-shaped
wedge. The wedge diameter is assumed to be equal to the plastic
zone size whereas the wedge thickness is evaluated by comparing
the wedge volume with the hardness-impression volume.
The point-force and the disk-shaped wedge analyses produce an
upper and a lower bound, respectively, of the geometry-dependent
parameter appearing in the expression for the fracture
toughness. The predictions of the present analysis are in good
agreement with similar experimental and numerical results.
1093-1097
Leonardi, Alessandro
b4913bce-4ece-4e85-ac3e-552d8d76bc51
Furgiuele, Franco
a2c0d238-1703-4a0a-a1e1-55ba58dd6f52
Syngellakis, Stavros
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Wood, Robert J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
May 2009
Leonardi, Alessandro
b4913bce-4ece-4e85-ac3e-552d8d76bc51
Furgiuele, Franco
a2c0d238-1703-4a0a-a1e1-55ba58dd6f52
Syngellakis, Stavros
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Wood, Robert J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Leonardi, Alessandro, Furgiuele, Franco, Syngellakis, Stavros and Wood, Robert J.K.
(2009)
Analytical approaches to stress intensity factor evaluation for indentation cracks.
Journal of the American Ceramic Society, 92 (5), .
(doi:10.1111/j.1551-2916.2009.03070.x).
Abstract
In the present paper, an analytical solution for the stress intensity
factor in the case of cracks produced by Vickers indenters
has been extended to the cases of triangular indenters, i.e., Berkovich
and cube-corner. According to the adopted approach,
median/radial cracks produced by indentations are modeled as
loaded by either a point-force or a symmetric disk-shaped
wedge. The wedge diameter is assumed to be equal to the plastic
zone size whereas the wedge thickness is evaluated by comparing
the wedge volume with the hardness-impression volume.
The point-force and the disk-shaped wedge analyses produce an
upper and a lower bound, respectively, of the geometry-dependent
parameter appearing in the expression for the fracture
toughness. The predictions of the present analysis are in good
agreement with similar experimental and numerical results.
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Published date: May 2009
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Local EPrints ID: 66658
URI: http://eprints.soton.ac.uk/id/eprint/66658
ISSN: 0002-7820
PURE UUID: 1fbc556c-daf6-4d32-9fbe-024303db1a61
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Date deposited: 07 Jul 2009
Last modified: 14 Mar 2024 02:37
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Contributors
Author:
Alessandro Leonardi
Author:
Franco Furgiuele
Author:
Stavros Syngellakis
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