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The hardnesses of poly(methylmethacrylate)

Briscoe, BJ and Evans, PD and Biswas, SK and Sinha, SK (1996) The hardnesses of poly(methylmethacrylate). In: Tribology International, 29 (2). pp. 93-104.

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Official URL: http://dx.doi.org/10.1016/0301-679X(95)00045-6

Abstract

The paper describes an experimental study of the normal and scratch hardnesses of a poly(methylmethacrylate). The deformations have been introduced using hard steel cones of a range of included cone angles. The influence of the state of interfacial lubrication is examined and rationalized. The observed time dependence of the two types of computed hardness data is compared and the nature of the correlations between these data is evaluated. It is observed that when the imposed strains are modest, say less than 0.2, the scratch hardness and normal hardness deformations produce self consistent data using first order and rather indiscriminate analyses for both types of deformations. At higher levels of imposed strain, a more critical appraisal of the nature of the deformation produced in the two cases is necessary in order to provide mutually consistent hardness values and hence unequivocal rheological characteristics for this polymer.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: poly(methylmethacrylate);indentation hardness;scratch hardness;scratch damage;lubrication
Department/Centre: Others
Date Deposited: 13 May 2011 05:40
Last Modified: 13 May 2011 05:40
URI: http://eprints.iisc.ernet.in/id/eprint/37631

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