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

被引：30

作者：

Alhayek, Abdulrahman ^{[1
]}

Syamsir, Agusril ^{[1
,2
]}

Supian, Abu Bakar Mohd ^{[2
]}

Usman, Fathoni ^{[1
]}

Asyraf, Muhammad Rizal Muhammad ^{[2
]}

Atiqah, Mohd Afdzaluddin ^{[3
]}

机构：

[1] Univ Tenaga Nas, Coll Engn, Civil Engn Dept, Kajang 43000, Malaysia

[2] Univ Tenaga Nas, Coll Engn, Inst Energy Infrastruct IEI, Kajang 43000, Malaysia

[3] Univ Kebangsaan Malaysia, Inst Microengn & Nanoelect, Bangi 43600, Malaysia

来源：

POLYMERS | 2022年 / 14卷 / 07期

关键词：

stacking sequence; pultrusion; creep; glass fibres-reinforced polymer; flexural; cross arm; REINFORCED POLYMER COMPOSITE; ENERGY-ABSORPTION; ELEMENTS; TUBES; BEAM;

D O I：

10.3390/polym14071330

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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.

引用

页数：15

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