%0 Publication %T Inverse estimation approach for elastoplastic properties using the load-displacement curve and pile-up topography of a single Berkovich indentation %A Ikumu Watanabe; Kenta Goto; Takahito Ohmura %8 02/03/2023 %I Elsevier BV %U https://mdr.nims.go.jp/concern/publications/bc386n39p %( https://doi.org/10.1016/j.matdes.2020.108925 %X An approach for the inverse estimation of the elastoplastic properties from a single indentation with a Berkovich indenter was developed. The relationship between the load-displacement and stress-strain curves was derived based on the equivalent energy principle, while an approximate equation for pile-up height was determined using elastic and plastic limits. The approach proposed in this study estimates the yield stress and strain-hardening exponent from hardness and pile-up height obtained from a single indentation based on these fundamental equations. The coefficients in the equations were determined in a parametric study using finite element analyses. The accuracy of the inverse estimation technique was confirmed using aluminum alloy and stainless steel samples and reference tensile testing. %G English %9 Article %K Elastic-plastic material; Finite elements; Indentation; Inverse analysis; Mechanical testing %~ MDR: NIMS Materials Data Repository %W National Institute for Materials Science