Publisher : The Korean Society of Mechanical Engineers
DOI : 10.3795/KSME-A.2015.39.11.1079
Title & Authors
Property Evaluation Method Using Spherical Indentation for High-Yield Strength Materials Choi, Youngsick; Marimuthu, Karuppasamy Pandian; Lee, Jin Haeng; Lee, Hyungyil;
In this paper, we propose a method to evaluate the material properties of high-yield strength materials exceeding 10GPa from spherical indentation. Using a regression equation considering four indentation variables, we map the load displacement relation into a stress-strain relation. To calculate the properties of high-strength materials, we then write a program that produces material properties using the loading / unloading data from the indentation test. The errors in material properties computed by the program are within 0.3, 0.8, and 6.4 for the elastic modulus, yield strength, and hardening coefficient, respectively.
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