An investigation on worn surfaces of chopped glass fibre reinforced polyester through SEM observations

El-Tayeb, N. S. M. and Yousif, B. F. and Yap, T. C. (2008) An investigation on worn surfaces of chopped glass fibre reinforced polyester through SEM observations. Tribology International, 41 (5). pp. 331-340. ISSN 0301-679X


The wear mechanisms of chopped strand mat (CSM) glass fibre reinforced polyester (CGRP) composite subjected to dry sliding against smooth stainless steel counterface (Ra=0.06 mm) were studied using a pin-on-disc technique. The effects of normal load (30–90N), sliding velocity (2.8–3.9m/s) and sliding distance (0.7–3.5km) on friction and wear behaviour of the CGRP composite in two different CSM orientations (parallel and anti-parallel) were measured. The worn surfaces of the CGRP composite specimens for each specific test condition were examined using scanning electron microscopy (SEM). Sliding in P-orientation exhibited lower friction coefficient at lower load and higher speed compared to AP-orientation. Meanwhile, sliding in AP-orientation exhibited (15%) less friction coefficient at higher load compared to P-orientation. At higher range of all tested parameters, AP-orientation exhibited less mass loss (16%) compared to the P-orientation. Interestingly, SEM observations showed various wear mechanisms that predominated by abrasive nature. Damage of different features in the matrix and CSM glass fibre associated with higher values of load, speed, and sliding distance such as micro- and macrocracks in the matrix, interface separation, fibre debonding and fracture, and different sizes of fractured fibres were evident.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2007 Elsevier Ltd. Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 14 Sep 2010 04:26
Last Modified: 13 Feb 2015 01:36
Uncontrolled Keywords: glass fibre; polyester; dry sliding; CSM orientations; SEM observations
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091309 Tribology
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Identification Number or DOI: 10.1016/j.triboint.2007.07.007

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