Effect of aging on the in-plane and out-of-plane mechanical properties of composites for design of marine structures

Type Article
Date 2023-07
Language English
Author(s) Robin Alban1, Arhant MaelORCID1, Davies PeterORCID1, Lejeune S.1, Lolive E.2, Bonnemains T.2, Habert B.3
Affiliation(s) 1 : Advanced Structural Materials and Hyperbaric Testing Laboratory (SMASH), Ifremer, Centre de Bretagne, Plouzané, France
2 : Institut de Recherche Dupuy de Lôme (IRDL – UMR CNRS 6027), Université de Bretagne Occidentale (UBO), France
3 : Direction Générale de l'Armement (DGA), IP/MCM/PMA, Paris, France
Source Composites Part C: Open Access (2666-6820) (Elsevier BV), 2023-07 , Vol. 11 , P. 100354 (11p.)
DOI 10.1016/j.jcomc.2023.100354
WOS© Times Cited 2
Keyword(s) Seawater, Saturation, Durability, Long term behavior

This paper describes an approach allowing aging to be included in the design of marine structures. Two types of aging are considered, physical aging and seawater saturation. The latter is shown to be more severe for this material, with losses in properties of up to 30% being measured after aging. A complete set of in-plane and out-of-plane properties was generated for a carbon/epoxy composite, and these were then used as input data to model the response of a flexural beam under a mixed shear/bending load. Reasonable agreement is found between model and test results; both show the strong influence of seawater conditioning on the composite performance, with a reduction in strength after aging of around 35%. This approach can be applied to account for seawater aging during the design of composite structures.

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