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Determination of Young's modulus by spherical indentation

Published online by Cambridge University Press:  31 January 2011

N. Huber ,
D. Munz  and
Ch. Tsakmakis
N. Huber
Affiliation:
Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Materialforschung II, Postfach 3640, D-76021 Karlsruhe, Germany
D. Munz
Affiliation:
Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Materialforschung II, Postfach 3640, D-76021 Karlsruhe, Germany
Ch. Tsakmakis
Affiliation:
Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Materialforschung II, Postfach 3640, D-76021 Karlsruhe, Germany
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Abstract

In this paper we consider elastic plastic materials that are tested by spherical indentation. Finite element calculations, which take into account nonlinear geometry properties, are carried out in order to determine the influence of the plastic history on the unloading response of the material. Two different iterative methods are proposed for determining Young's modulus under the assumption of a bilinear plasticity law. The first method deals with loading and unloading parts of the indentation test, whereas the second one deals only with unloading parts of the indentation test.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 9 , September 1997 , pp. 2459 - 2469
Copyright
Copyright © Materials Research Society 1997

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References

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