Effect of indenter shapes on inverse materials characterization based on the dual indenters method

Xiaohang Kong; Yanguo Shi; Bing Li; Glynn Rothwell; Russell English; Qingxiang Yang; Xuejun Ren

doi:10.3139/146.110139

Published by De Gruyter June 11, 2013

Effect of indenter shapes on inverse materials characterization based on the dual indenters method

Xiaohang Kong , Yanguo Shi , Bing Li , Glynn Rothwell , Russell English , Qingxiang Yang and Xuejun Ren

From the journal International Journal of Materials Research

https://doi.org/10.3139/146.110139

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Abstract

The indentation method is a useful tool for studying the onset of plastic flow and work hardening in small volumes. Several approaches based on either single and dual indenters have been reported to characterise a wide range of materials. In this work, the single and dual indenters approaches, with different indenter types, have been comparatively studied using an inverse finite element modelling program developed based on the Kalman filter method. The effect of indenter shapes on the accuracy and uniqueness of the predicted results, as well as convergence time of the program are systematically analysed by automatically mapping the results with a wide range of initial values.

Keywords: Plastic properties; Inverse modelling; Dual indenters; Uniqueness

* Correspondence address, Dr. Xiaohang Kong, School of Engineering, Liverpool John Moores University, Liverpool L3 3AF, UK, Tel.: +44 151 231 2525, Fax: +44 151 231 2529, E-mail: xiaohang_kong@yahoo.co.uk

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Received: 2008-10-31

Accepted: 2009-3-1

Published Online: 2013-06-11

Published in Print: 2009-07-01

Effect of indenter shapes on inverse materials characterization based on the dual indenters method

Abstract

References

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