Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Tensile Fatigue Behaviour of Polyester and Vinyl Ester Based Gfrp Laminates – a Comparative Evaluation

Version 1 : Received: 19 December 2020 / Approved: 21 December 2020 / Online: 21 December 2020 (12:00:57 CET)

A peer-reviewed article of this Preprint also exists.

Ferdous, W.; Manalo, A.; Yu, P.; Salih, C.; Abousnina, R.; Heyer, T.; Schubel, P. Tensile Fatigue Behavior of Polyester and Vinyl Ester Based GFRP Laminates—A Comparative Evaluation. Polymers 2021, 13, 386. Ferdous, W.; Manalo, A.; Yu, P.; Salih, C.; Abousnina, R.; Heyer, T.; Schubel, P. Tensile Fatigue Behavior of Polyester and Vinyl Ester Based GFRP Laminates—A Comparative Evaluation. Polymers 2021, 13, 386.

Journal reference: Polymers 2021, 13, 386
DOI: 10.3390/polym13030386

Abstract

Fatigue loading is critical to fibre reinforced polymer composites due to their anisotropic and heterogenous nature. This study investigated the tensile fatigue behaviour of polyester and vinyl ester based GFRP laminates to understand the critical aspects of failure mode and fatigue life under cyclic loading. GFRP laminates with two different resin systems (polyester and vinyl ester), two different stress ratios (0.1 and 0.5) and two different environmental conditions (air and water) were investigated at an applied stress of 80%, 60% and 40% of the ultimate capacity. Based on the investigated parameters (i.e., resin types, stress ratio, environmental conditioning and maximum applied stress), a fatigue model was proposed. Results show that the resin system plays a great role in fatigue failure mode while the stress ratio and environmental condition significantly affect the tensile fatigue life of GFRP laminates. The types of resin used in GFRP laminates and environmental conditions as input parameter in the proposed fatigue model is a unique contribution.

Subject Areas

Fatigue; fibre composites; polyester and vinyl ester resins; stress ratio; fatigue model.

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