Skip to main content

Research Repository

Advanced Search

Extracting elastic-plastic properties from experimental loading-unloading indentation curves using different optimization techniques

Kang, Ji Jun; Becker, Adib A.; Wen, Wu; Sun, Wei

Extracting elastic-plastic properties from experimental loading-unloading indentation curves using different optimization techniques Thumbnail


Authors

Ji Jun Kang

Adib A. Becker

Wu Wen

Wei Sun



Abstract

This work is focused on the determination of elastic-plastic material properties from indentation loading-unloading curves using optimisation techniques and experimental data from instrumented indentation tests. Three different numerical optimisation methods (namely, FE analysis, dimensional mathematical functions and simplified mathematical equations approaches) have been used to determine three material properties; Young's modulus, yield stress and work-hardening exponent. The predictions of the material properties from the three approaches have been validated against the values obtained from uniaxial tensile tests and compared to the experimental loading-unloading curves. In general, the elastic-plastic material properties predicted from these three proposed optimisation methods estimate the Young's modulus to within 6% and the yield stress and work-hardening exponent to within 12%, compared to the values obtained from the uniaxial tensile tests.

Citation

Kang, J. J., Becker, A. A., Wen, W., & Sun, W. (2018). Extracting elastic-plastic properties from experimental loading-unloading indentation curves using different optimization techniques. International Journal of Mechanical Sciences, 144, https://doi.org/10.1016/j.ijmecsci.2018.05.043

Journal Article Type Article
Acceptance Date May 21, 2018
Online Publication Date May 21, 2018
Publication Date Aug 1, 2018
Deposit Date Jul 4, 2018
Publicly Available Date May 22, 2019
Journal International Journal of Mechanical Sciences
Print ISSN 0020-7403
Electronic ISSN 0020-7403
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 144
DOI https://doi.org/10.1016/j.ijmecsci.2018.05.043
Keywords Indentation; Finite element analysis; Optimization;
Elastic-plastic; Material properties
Public URL https://nottingham-repository.worktribe.com/output/960867
Publisher URL https://www.sciencedirect.com/science/article/pii/S0020740317323378

Files




Downloadable Citations