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Lookup NU author(s): shukry Abdul Majid,
Professor Geoff Gibson
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© August 2016 IJENS. The glass fibre reinforced epoxy (GRE) pipes under multi-axial loadings were studied through its performance at various temperatures and different failure criteria. Owing to the orthotropic nature of GRE pipes, it is hard to analyse the stresses generated in them. Therefore, using finite element software, an analysis was conducted to determine the first ply failure of composite pipes, which were subjected to five different stress ratios, ranging from pure hoop to pure axial loadings, at room temperature, 65 °C and 95 °C. The Tsai-Wu, Hashin and Puck failure criteria were used to predict the failure strength of composite pipes. The results were validated with experimental data obtained from previously reported studies. Subsequently, the limits associated with the axial and hoop stress were expressed by failure envelopes graph. There were differences in the results obtained for the various criteria; however, they showed relatively similar trends. During failure analysis, Hashin criterion results in superior predictions for determining the FPF of GRE pipes yielding the smallest % error between the experimental data compared to the other failure criteria. Initial failure stress found decreased at elevated temperatures, except at a 2:1 stress loading, where the initial failure stress increased.
Author(s): Nazirah ZS, Abdul Majid MS, Amin NAM, Gibson AG
Publication type: Article
Publication status: Published
Journal: International Journal of Mechanical and Mechatronics Engineering
Online publication date: 01/08/2016
Acceptance date: 02/04/2016
ISSN (print): 2227-2771
ISSN (electronic): 2077-124X
Publisher: International Journals of Engineering and Sciences Publisher