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An alternative method for penetration depth determination in nanoindentation measurements

Published online by Cambridge University Press:  31 January 2011

J. Woirgard  and
J-C. Dargenton
J. Woirgard
Affiliation:
Laboratoire de Métallurgie Physique, URA CNRS 131, Bd. 3 Téléport 2, B.P. 174, 86960 Futuroscope Cedex, France
J-C. Dargenton
Affiliation:
Laboratoire de Métallurgie Physique, URA CNRS 131, Bd. 3 Téléport 2, B.P. 174, 86960 Futuroscope Cedex, France
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Abstract

The information provided by the shape of the unloading portion of indentation curves is used to calculate the area of contact between the indenter and the material. Results obtained in fused silica and nickel, including Young's modulus and hardness values, are presented to illustrate the validity of the approach. It is shown that errors of only a few percent are introduced when fitting unloading curves with power laws. The present method is especially useful when direct specimen stiffness measurements can be performed.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 9 , September 1997 , pp. 2455 - 2458
Copyright
Copyright © Materials Research Society 1997

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References

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