Publication: Flexural Creep Behaviour of Pultruded GFRP Composites Cross-Arm: A Comparative Study on the Effects of Stacking Sequence
Date
2022
Authors
Alhayek A.
Syamsir A.
Supian A.B.M.
Usman F.
Asyraf M.R.M.
Atiqah M.A.
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
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. � 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Description
Bending (forming); Bending tests; Creep; Fiber reinforced plastics; Glass fibers; Pultrusion; Reinforcement; Bending creep; Comparatives studies; Creep behaviors; Cross arm; Flexural; Four-point-bending; GFRP composites; Glass-fiber reinforced polymer composites; Glassfiber reinforced polymers (GFRP); Stacking sequence; Bending strength