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Spherical indentation of ductile power law materials

Published online by Cambridge University Press:  03 March 2011

Roberta Mulford ,
Robert J. Asaro  and
Robert J. Sebring
Roberta Mulford
Affiliation:
NMT-15 Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Robert J. Asaro
Affiliation:
Department of Structural Engineering, University of California, San Diego, La Jolla, California 92093
Robert J. Sebring
Affiliation:
MST-7 Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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Abstract

A procedure for extracting simple constitutive parameters from microindentationtests is described. The analysis used to interpret the indentation tests is based onthe analysis of the spherical indentation test developed by Hill et al. for power law materials. Indentation tests are supplemented by scanning interference microscopyof the residual indented surface profiles and a method is suggested for using the residual surface profiles to estimate the actual contact surface. This, in turn, allowsfor the construction of the entire stress versus strain curve.

Keywords

HardnessIndentationMechanical properties
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 9 , September 2004 , pp. 2641 - 2649
Copyright
Copyright © Materials Research Society 2004

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References

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