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NATURAL OUTDOOR AND LABORATORY-CONTROLLED AGEING OF EPOXY ADHESIVES AND CFRP LAMINATES AFTER FOUR YEARS OF EXPOSURE

descriptionPublicationkeyboard_double_arrow_right Article , Conference object 01 Jul 2023 Portugal Publisher:Zenodo
Authors: Dushimimana, Aloys; Correia, Luís Luciano Gouveia; Cruz, Ricardo; Cabral-Fonseca, Susana; Pereira, João Miguel; Sena-Cruz, José;

doi: 10.5281/zenodo.8109646 , 10.5281/zenodo.8109645

handle: 1822/87149

NATURAL OUTDOOR AND LABORATORY-CONTROLLED AGEING OF EPOXY ADHESIVES AND CFRP LAMINATES AFTER FOUR YEARS OF EXPOSURE

Abstract

Ageing of epoxy adhesive and carbon fibre reinforced polymer (CFRP) laminate was addressed in this work. The specimens were exposed to laboratory-controlled (20 °C/55% RH, and water immersion at 20 °C) and outdoor (ageing mainly promoted by carbonation, freeze-thaws, airborne chlorides, and elevated temperatures) conditioning for up to four years. The results from tensile tests showed water immersion of the epoxy adhesive as the most severe exposure condition, yielding to 66% and 75% decrease in tensile strength and elastic modulus, respectively. In contrast, CFRP laminate generally improved the same mechanical properties in outdoor environments, the highest being 16.1% and 10.4%, respectively.

Paper 258

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Portugal
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Keywords

Epoxy adhesive, Natural ageing, Accelerated aging, CFRP laminate, Elastic modulus, Tensile strength

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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