Bi-axial behavior of glass/epoxy pipe subjected to internal pressure

Bi-axial behavior of glass/epoxy pipe subjected to internal pressure

Abdul Mateen Mohammed, Tajuddin Mohammed, Ravi Shankar D.V., Manzoor Hussain M., Puneetha

Abstract. Composite structures are considered as the auxiliary to the conventional metallic materials. However, a thorough understanding of the material behaviour is required to replace the materials in use with scientific evidence for design rather than the designing based on high safety factor. The behaviour of filament wound E-glass/epoxy pipes of different helix angles exposed to internal pressure are studied. The sample GFRP pipe of different helix angles namely [±45o], [±55o] & [±70o] were subjected to open end pressure until the sample failed due to burst(pressure) and the corresponding strains were recorded using the strain smart 5000 data acquisition system (DAQ). The theoretical first-ply failure and burst pressure were determined using (i) Maximum stress theory, (ii) Maximum strain theory and (iii) Tsai Hill theory and were later compared with the experimental results. The first ply failure of the samples was observed by the whitening phenomenon. Later, the damage initiated by the formation of pine holes that act as a micro crack and which later grows to a macro crack in the fiber direction until final failure. A nonlinear relation between the longitudinal stress and strain was observed.

Keywords
Open End Burst Test, GFRP, Bi-Axial Behaviour, Stress and Strain

Published online 8/10/2023, 9 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Abdul Mateen Mohammed, Tajuddin Mohammed, Ravi Shankar D.V., Manzoor Hussain M., Puneetha, Bi-axial behavior of glass/epoxy pipe subjected to internal pressure, Materials Research Proceedings, Vol. 31, pp 466-474, 2023

DOI: https://doi.org/10.21741/9781644902592-48

The article was published as article 48 of the book Advanced Topics in Mechanics of Materials, Structures and Construction

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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