Results
Title

Flexural Creep Behaviour of Pultruded GFRP Composites Cross-Arm: A Comparative Study on the Effects of Stacking Sequence.

Authors

Alhayek, Abdulrahman; Syamsir, Agusril; Supian, Abu Bakar Mohd; Usman, Fathoni; Asyraf, Muhammad Rizal Muhammad; Atiqah, Mohd Afdzaluddin

Abstract

Pultruded glass fibre reinforced polymer (pGFRP) composites provide outstanding properties for composite polymer cross arms in power transmission line applications. This study has investigated the effects of various stacking sequences of fibres directions of pGFRP on flexural strength and creep behaviour. The use of static four-point bending flexural tests revealed that Stacking Sequence 2 (±45/0/90/0/90/0) had a significant flexural strength of 399.9 MPa while Stacking Sequence 1 (±45/90/0/±45) had a flexural strength of 242.5 MPa. Furthermore, the four-point bending creep experiments were performed at three distinct stress levels, notably 12%, 24%, and 37% of the ultimate flexural strength, to characterise the creep behaviour of distinct stacking sequences. Moreover, Findley's power law equation for bending creep behaviour has revealed that the time-dependent reduction factor of Stacking Sequence 1 and Stacking Sequence 2 estimates a drop in flexural modulus of 23% and 10% respectively.

Subjects

ELECTRIC lines; GLASS fibers; ULTIMATE strength; FLEXURAL modulus; ARM; FLEXURAL strength; COMPARATIVE studies; CREEP (Materials)

Publication

Polymers (20734360), 2022, Vol 14, Issue 7, p1330

ISSN

2073-4360

Publication type

Academic Journal

DOI

10.3390/polym14071330