An Indentation Method Based on FEA for Equi-Biaxial Residual Stress Evaluation

Jin Haeng Lee; Hyung Yil Lee

doi:10.4028/www.scientific.net/KEM.326-328.481

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An Indentation Method Based on FEA for Equi-Biaxial Residual Stress Evaluation

Abstract:

An indentation method to determine equi-biaxial residual stress is proposed by examining the data from the incremental plasticity theory based FE analyses. We found that hardness is strongly dependent of the magnitude and sign of residual stress and material properties. We then selected some normalized parameters minimally affected by material properties and tip radius. With numerical regressions of the data obtained, we proposed new formulae for residual stress evaluation. The new approach provides a substantial enhancement in accuracy compared with the prior methods.

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Key Engineering Materials (Volumes 326-328)

Pages:

481-486

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.326-328.481

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Online since:

December 2006

Authors:

Jin Haeng Lee, Hyung Yil Lee

Keywords:

Conical Indenter, Contact Diameter, Equi-Biaxial Residual Stress, Strain-Hardening Exponent, Yield Strength, Young's Modulus

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