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Title: Characterization of mechanical properties of polymers by nanoindentation tests
Authors: Zhang, C.Y.
Zhang, Y.W. 
Zeng, K.Y. 
Shen, L.
Issue Date: 1-Oct-2006
Citation: Zhang, C.Y., Zhang, Y.W., Zeng, K.Y., Shen, L. (2006-10-01). Characterization of mechanical properties of polymers by nanoindentation tests. Philosophical Magazine 86 (28) : 4487-4506. ScholarBank@NUS Repository.
Abstract: A constitutive model for thermoplastic polymeric materials and its finite element implementation are presented. The model was verified by both tensile and indentation experimental results. In addition, a five-step indentation scheme, which is able to separate time-dependent plastic deformation from elastic and visco-elastic-plastic deformations, was formulated to extract the complete list of parameters in the constitutive model. Four types of indentation tests on polymethylmethacrylate (PMMA), following the five-step and other schemes, were performed. Experimental data were used to extract all the parameters in the model and verify the five-step test scheme. Good agreement between the experimental results and model prediction indicate that the five-step indentation scheme is a practical approach to determine the mechanical properties of thermoplastic polymers.
Source Title: Philosophical Magazine
ISSN: 14786435
DOI: 10.1080/14786430600735476
Appears in Collections:Staff Publications

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