Mathematical Analysis on the Uniqueness of Reverse Algorithm for Measuring Elastic-plastic Properties by Sharp Indentation |
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| Authors: | Yongli Huang Xiaofang Liu Yichun Zhou Zengsheng Ma and Chunsheng Lu |
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| Affiliation: | 1) Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, and Faculty of Materials, Optoelectronics and Physics, Xiangtan University, Xiangtan 411105, China 2) Department of Mechanical Engineering, Curtin University, Perth, WA 6845, Australia |
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| Abstract: | The reverse analysis provides a convenient method to determine four elastic-plastic parameters through an indentation curve such as Young s modulus E, hardness H, yield strength σy and strain hardening exponent n. In this paper, mathematical analysis on a reverse algorithm from Dao model (Dao et al., Acta Mater., 2001, 49, 3899) was carried out, which thought that only when 20 ≤E*/σ0.033≤ 26 and 0.3
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| Keywords: | Elastic-plastic properties Sharp indentation Reverse algorithm Uniqueness Sensitivity |
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