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Master curves for Hertzian indentation on coating/substrate systems

Published online by Cambridge University Press:  03 March 2011

Chun-Hway Hsueh  and
Pedro Miranda
Chun-Hway Hsueh
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
Pedro Miranda
Affiliation:
Departamento Electrónica e Ingeniería Electromecánica, Escuela de Ingenierías Industriales, Universidad de Extremadura, 06071 Badajoz, Spain
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Abstract

An analytical model was developed to derive an approximate closed-form solution for indenter displacement when a rigid spherical indenter is pressed onto a coating/substrate system. Finite element analyses were also performed to verify the analytical solution. The results showed that the solution could be obtained from the analytical expression for Hertzian indentation on a homogeneous semi-infinite elastic medium multiplied by a modification term. This modification term is a function of two ratios: (i) Young’s modulus ratio between the coating and the substrate and (ii) the ratio between the coating thickness and the contact radius. Based on this modification term, master curves for Hertzian indentation on coating/substrate systems were plotted.

Keywords

IndentationLayeredCoating

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Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 1 , January 2004 , pp. 94 - 100
Copyright
Copyright © Materials Research Society 2004

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