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Behavioural Analysis of a Thin-Walled Carbon Fibre Reinforced Composite Pipe Subjected to Bending Test

Authors: Elijah PT, Obaseki M

ABSTRACT

The behavioural analysis of a thin-walled carbon fibre reinforced composite pipe subjected to bending test using Instron machine is presented in this paper. A three-point bending test was performed on a thin-walled 230 mm length carbon fibre-reinforced composite pipe with an external diameter of 10 ± 0.01 mm and wall thickness of 1 ± 0.05 mm in the laboratory using the Instron 4483 machine based on the ASTM D790 standard to measure the modulus and flexural strength. Bending tests results showed a fracture load point of 0.2336 kN, maximum displacement at break point at 3.6 mm, maximum strain of 0.015 mm/mm, and a maximum bending stress of 0.94 kN/mm. Overall, the composites exhibited anisotropic characteristics under tension unlike monolithic materials. It was observed that when subjected to bending stresses, the composites did not undergo plastic deformation. Initial fracture continuously propagated across the fibres until it reached complete fracture. Further findings showed that the composites did not experience complete failure unlike steel pipes. This means that composites do not lose their form or shape until fracture.


Affiliations: Applied Mechanics and Design/Production Research Group, Department of Mechanical Engineering, Maritime University, Okerenkoko, Delta State, Nigeria.
Keywords: Composite Pipes, Carbon Fibre, Bending Test, Instron Machine, Oil And Gas Industry
Published date: 2020/12/30

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ISSN: 2635-3342 (Print)

ISSN: 2635-3350 (Online)

DOI: In progress

ISI Impact Factor: In progress

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