The potential of using betelnut fibres for tribo-polyester composites considering three different orientations

Yousif, B. F. and Gill, Nirmal Singh and Lau, Saijod T. W. and Devadas, Alvin (2009) The potential of using betelnut fibres for tribo-polyester composites considering three different orientations. In: ASME International Mechanical Engineering Congress and Exposition (IMECE 2008), 31 Oct-6 Nov 2008, Boston, MA. United States.

Abstract

This paper presents an attempt to use betelnut fibres as reinforcement for tribo-polyester composites in bearing applications. The composite was fabricated using the hand layup technique, and contains 15 layers of randomly distributed chopped fibres and 17 layers of polyester. The adhesive wear and frictional behavior of the composites were studied against a polished stainless steel counterface using block-on-disc (BOD) machine at different applied loads (5-30N) and sliding distance (0-7km). In addition to that, the orientation of the fibre layers with respect to the sliding direction of the counterface was considered, i.e. parallel (P-O), anti-parallel (AP-O) and normal (N-O). Studies on worn surfaces, using a scanning electron microscope (SEM), and roughness profiles of the composite and counterface assisted to explain the results. As a result of this work, it was found that applied load has less effect on the specific wear rate and friction coefficient of the composite especially in P-O and AP-O. Meanwhile, in both orientations (P-O and AP-O), the steady state of specific wear rate was reached after 5 km sliding distance. On the other hand, the composite behaved differently in N-O, where the wear and friction increased when the load and sliding distance increased. This was due to the poor support of the fibres in that orientation, where delamination, pull out and breakage in the fibres were observed. In P-O and AP-O, the wear mechanism was predominated by plastic deformation and micro-cracks.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2008 by ASME. Permanent restricted access to paper due to publisher copyright restrictions.
Depositing User: Dr Belal Yousif
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 18 Oct 2010 03:49
Last Modified: 28 Nov 2014 01:49
Uncontrolled Keywords: betelnut fibres; tribo-polyester composites; adhesive wears: friction coeddicients
Fields of Research (FOR2008): 09 Engineering > 0913 Mechanical Engineering > 091309 Tribology
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
03 Chemical Sciences > 0305 Organic Chemistry > 030502 Natural Products Chemistry
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1115/IMECE2008-68648
URI: http://eprints.usq.edu.au/id/eprint/8712

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