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http://dx.doi.org/10.3795/KSME-A.2012.36.1.017

A Dual Triangular Pyramidal Indentation Technique Based on FEA Solutions for Material Property Evaluation  

Kim, Min-Soo (Dept. of Mechanical Engineering, Sogang Univ.)
Hyun, Hong-Chul (Dept. of Mechanical Engineering, Sogang Univ.)
Lee, Jin-Haeng (Korea Atomic Energy Research Institute)
Lee, Hyung-Yil (Dept. of Mechanical Engineering, Sogang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.36, no.1, 2012 , pp. 17-28 More about this Journal
Abstract
In this study, we suggest a method for material property evaluation by dual-triangular pyramidal indenters using the reverse analysis. First, we demonstrated that load-displacement curves of conical and triangular pyramidal indenters are different for the same material. For this reason, an independent research on the triangular pyramidal indenter is needed. From FE indentation analyses on various materials, we then investigated the relationships among material properties, indentation parameters and load-displacement curves. From this, we established property evaluation formula using dual-triangular pyramidal indenters having two different half-included-angles. The approach provides the values of elastic modulus, yield strength and strain-hardening exponent within an average error of 3% for various materials.
Keywords
Triangular Pyramidal Indenter; Dual-Indentation; Finite Element Analysis; Load-depth Curve; Reverse Analysis; Material Property;
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Times Cited By KSCI : 5  (Citation Analysis)
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