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Measurement of local mechanical properties using multiple indentations by a special conical indenter and error analysis

Published online by Cambridge University Press:  06 January 2016

Shigeru Hamada ,
Shogo Kashiwa  and
Hiroshi Noguchi
Shigeru Hamada
Affiliation:
Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
Shogo Kashiwa
Affiliation:
Department of Mechanical Engineering, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
Hiroshi Noguchi*
Affiliation:
Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
*
a)Address all correspondence to this author. e-mail: nogu@mech.kyushu-u.ac.jp
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Abstract

This paper proposes a method for determining the mechanical properties (Young's modulus, Poisson's ratio, yield strength, and work hardening factor) of a material at a specific point using an indentation technique that utilizes a specially designed indenter in conjunction with an inverse problem and finite element analyses. The specially designed indenter combines the characteristics of spherical and conical indenters and can be used to produce multiple indentations at a single point. The feasibility of the proposed method for determining the local mechanical properties of a material was confirmed by detailed precision verifications in the ideal case and the worst case.

Keywords

mechanical propertiesindentationinverse problemFEM analysis
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 2 , 28 January 2016 , pp. 259 - 273
Copyright
Copyright © Materials Research Society 2016 

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References

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