Effects of Ageing in Marine Environment on Glass Fibre/Unsaturated Polyester Composite

Benyahia, Ali Ahmed; Laoubi, Khedoudja; Belloul, Nabila; Sérier, Aîcha; Ouali, Nourdine

Paper Titles

Micro-Scale Modeling of Carbon-Fiber Reinforced Thermoplastic Materials, p.1
Cellulose Whiskers Micro-Fibers Effect in the Mechanical Proprieties of PP and PLA Composites Fibers Obtained by Spinning Process, p.12
Behavior of Reinforced Concrete Beams by Confined Oblique Rods, p.27
Behavior of the Composite Lightweight Concrete, p.39
Effects of Ageing in Marine Environment on Glass Fibre/Unsaturated Polyester Composite, p.51
Study of Mechanical Behavior of Concrete in Direct Tensile Fiber Chips, p.64
Effect of Artificial Defect and Mean Shear Stress on Torsional Fatigue Behaviour, p.74
Optimizing Residual Stress Profile Induced by Laser Shock Peening Using DOE Technique, p.83
Toward Optimal Updating Time Inspection Based on Reliability Approach of Fatigue Crack Propagation, p.96

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Paper Title:

Effects of Ageing in Marine Environment on Glass Fibre/Unsaturated Polyester Composite

Periodical	Applied Mechanics and Materials (Volume 146)
Main Theme	Multi-Scales Behaviour of Materials
Edited by	Moussa Karama
Pages	51-63
DOI	10.4028/www.scientific.net/AMM.146.51
Citation	Khedoudja Laoubi et al., 2011, Applied Mechanics and Materials, 146, 51
Online since	December, 2011
Authors	Khedoudja Laoubi, Nabila Belloul, Ali Ahmed Benyahia, Aîcha Sérier, Nourdine Ouali
Keywords	Composite, Hygrothermal Ageing, Laminate, Marine Environment, Mechanical Property, Unsaturated Polyester
Price	US$ 28,-

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Abstract

The aim of this work is the study of the long term behaviour of a laminated composite made in glass/polyester and aged in seawater at various temperatures. The results obtained show that the immersion in seawater causes ageing of the composite material. This was reflected first by a change in color of the material depending on the temperature of the immersion and the gel-coat loses its brightness. The infrared spectroscopy has confirmed activation of chemical degradation (hydrolysis of the resin and of the fibre/matrix interface, fibre degradation). This chemical degradation could be the cause of decrease in strength and ductility detected by analysing the behaviour of immersed testing specimens. It could also be the cause of the increase of absorption rate recorded for immersions exceeding 22 days.