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On the determination of representative stress–strain relation of metallic materials using instrumented indentation
Highlights A method to convert indentation load–depth curve into representative stress–strain curve is presented. Representative stress–strain curves of six metals are obtained using finite element analysis. Different representative strain definitions are compared using finite element method. Representative stress–strain curve of molybdenum films is obtained by nanoindentation tests.
Abstract In this study, attempts have been made to estimate the representative stress–strain relation of metallic materials from indentation tests using an iterative method. Finite element analysis was performed to validate the method. The results showed that representative stress–strain relations of metallic materials using the present method were in a good agreement with those from tensile tests. Further, this method was extended to predict representative stress–strain relation of ultra-thin molybdenum films with a thickness of 485nm using nanoindentation. Yielding strength and strain hardening exponent of the films were therefore obtained, which showed a good agreement with the published data.
On the determination of representative stress–strain relation of metallic materials using instrumented indentation
Highlights A method to convert indentation load–depth curve into representative stress–strain curve is presented. Representative stress–strain curves of six metals are obtained using finite element analysis. Different representative strain definitions are compared using finite element method. Representative stress–strain curve of molybdenum films is obtained by nanoindentation tests.
Abstract In this study, attempts have been made to estimate the representative stress–strain relation of metallic materials from indentation tests using an iterative method. Finite element analysis was performed to validate the method. The results showed that representative stress–strain relations of metallic materials using the present method were in a good agreement with those from tensile tests. Further, this method was extended to predict representative stress–strain relation of ultra-thin molybdenum films with a thickness of 485nm using nanoindentation. Yielding strength and strain hardening exponent of the films were therefore obtained, which showed a good agreement with the published data.
On the determination of representative stress–strain relation of metallic materials using instrumented indentation
Fu, Kunkun (author) / Chang, Li (author) / Zheng, Bailin (author) / Tang, Youhong (author) / Wang, Hongjian (author)
2014-10-06
6 pages
Article (Journal)
Electronic Resource
English
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