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Title: Material characterization based on dual indenters
Authors: Swaddiwudhipong, S. 
Tho, K.K. 
Liu, Z.S.
Zeng, K.
Keywords: Dual indenters
Finite element analysis
Load-displacement indentation
Material characterization
Plastic deformation
Issue Date: Jan-2005
Citation: Swaddiwudhipong, S., Tho, K.K., Liu, Z.S., Zeng, K. (2005-01). Material characterization based on dual indenters. International Journal of Solids and Structures 42 (1) : 69-83. ScholarBank@NUS Repository.
Abstract: Extensive large strain-large deformation finite element analyses were carried out to investigate the response of elasto-plastic materials obeying power law-strain hardening during the loading and unloading process of instrumented indentation with conical indenters of different apex angles. The relationships between the characteristics of the indentation load-displacement curves and the elasto-plastic material properties were computationally established. A reverse analysis algorithm based on load-displacement curves obtained from dual indenters was presented. It was demonstrated that the proposed reverse analysis algorithm can uniquely recover the elasto-plastic material properties from the load-displacement curves of two conical indenters with different apex angles. The numerical results obtained are in good agreement with published values. © 2004 Elsevier Ltd. All rights reserved.
Source Title: International Journal of Solids and Structures
ISSN: 00207683
DOI: 10.1016/j.ijsolstr.2004.07.027
Appears in Collections:Staff Publications

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