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On Effective Indenters Used in Nanoindentation Data Analysis

Published online by Cambridge University Press:  31 January 2011

Guanghui Fu ,
Ling Cao  and
Tiesheng Cao
Guanghui Fu
Affiliation:
guanghuifu@yahoo.com
Ling Cao
Affiliation:
lingcaodds@yahoo.com, LC Dental, Fremont, California, United States
Tiesheng Cao
Affiliation:
caots@fmmu.edu.cn, Fourth Military Medical University, Ultrasonographic Diagnostics, Xi'an, Shaanxi, China
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Abstract

Effective indenter concept was introduced by Pharr and Bolshakov to explain nanoindentation unloading curves. This paper shows that the contact stiffness under a uniform pressure distribution is 57% higher than what is given by the fundamental relation. This is due to the fact that there is no physical indenter that gives a uniform pressure distribution during elastic contact, and the fundamental relation used in nanoindentation data analysis does not apply.

Keywords

elastic propertiesthin filmnano-indentation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1224: Symposia FF/GG – Mechanical Behavior at Small Scales — Experiments and Modeling , 2009 , 1224-FF05-36
Copyright
Copyright © Materials Research Society 2010

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References

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