Lookup NU author(s): Professor Geoff Gibson,
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The effects of hydrothermal ageing on the crushing behaviour of glass fibre-reinforced epoxy (GRE) pipes are discussed. Pipes with three different winding angles (+/- 45 degrees, +/- 55 degrees, +/- 63 degrees) were manufactured by filament winding process. The pipes were then hydrothermally aged in tap water at a constant temperature of 80 degrees C for periods of 500, 1000, and 1500 h. Uniaxial compressive tests were conducted on the virgin and aged samples using a universal testing machine in accordance with ASTM D695-10. The tests were also performed at temperatures ranging from room temperature (RT) at 25 degrees C to 45 degrees C and 65 degrees C to study the response of the pipes at elevated temperatures. Scanning electron microscopy (SEM) images were captured and the relationship between the ageing period and strength of the GRE pipes was determined. The results indicate that the strength of the GRE pipes significantly decreases with increase in the temperature and ageing period. On the contrary, the strength increases as the winding angles decrease. The compressive strength of the pipes was also predicted using a Berbinau's based model and was found to correlate well with the earlier obtained experimental results yielding a maximum variation of less than similar to 25%. (C) 2016 Elsevier Ltd. All rights reserved.
Author(s): Fitriah SN, Majid MSA, Ridzuan MJM, Daud R, Gibson AG, Assaleh TA
Publication type: Article
Publication status: Published
Journal: Composite Structures
Print publication date: 01/01/2017
Online publication date: 28/09/2016
Acceptance date: 26/09/2016
ISSN (print): 0263-8223
ISSN (electronic): 1879-1085
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