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|Title:||Characterization of mechanical properties of polymers by nanoindentation tests|
|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. https://doi.org/10.1080/14786430600735476|
|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|
|Appears in Collections:||Staff Publications|
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