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Surface deformations of polymers induced by a pendulum scratch machine.

Author(s)
T. Iqbal Chemical Engineering Department, University of Engineering & echnology, KSK Campus, Lahore, Pakistan
S. Yasin Chemical Engineering Department, University of Engineering & echnology, KSK Campus, Lahore, Pakistan
M. Zafar Chemical Engineering Department, University of Engineering & echnology, KSK Campus, Lahore, Pakistan
N. Ramzan Chemical Engineering Department, University of Engineering & echnology, KSK Campus, Lahore, Pakistan
B. J. Briscoe Chemical Engineering Department, Imperial College, London, UK
Abstract
The experimental study describes the surface deformations of polymers produced through penetration depth dependent scratches produced under different applied normal loads and using rigid conical indenters. The reported surface deformations of the scratched polymers are assessed using an SEM (scanning electron microscope). The observed deformation mechanisms can be manipulated by imposed experimental conditions; such as the normal load, the contact angle, the nominal scratching velocity and the temperature. The polymers are seen to be deformed by ironing, elastic, viscoelastic-plastic ploughing and brittle mechanisms. Along with these surface damages a fibrillation of semicrystalline polymers is also observed when the polymeric surfaces were subjected to most severe contact conditions during scratching. The deformational studies may help in material design and selection for tribological applications.
Publication Details
Page(s) 43-49
DOI DOI not available
Published Journal: Journal of Pakistan Institute of Chemical Engineers, Volume: 40, Issue: 1, Year: 2012

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