Mechanical behavior of carbon fiber/epoxy filament wound laminates exposed to hygrothermal conditioning

Humberto Almeida Jr*, Samia D. Souza, Edson C. Botelho, Sandro C. Amico

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work aims to evaluate the effect of hygrothermal conditioning on the tensile, in-plane shear and viscoelastic properties of carbon fiber/epoxy laminates (fiber volume fraction ≈ 70%). The flat unidirectional laminates were manufactured by filament winding process using a KUKA robot and the composites were cured under hot compression molding. The laminates were later exposed to hygrothermal conditioning. All composite samples were tested before and after environmental conditioning in a hygrothermal chamber. Elastic and strength tensile properties reduced for aged specimens, e.g. [0]4 sample presented a reduction of 18% in tensile strength and 8% in elastic modulus. Shear strength and modulus followed the same trend, and shear modulus reduced in about 38%. Tensile and shear post-test specimens presented accepted failure modes, since for instance, shear specimens failed at the gage section with delaminations.
Original languageEnglish
Title of host publicationICCM 2015: 20th International Conference on Composite Materials: Proceedings
Place of PublicationCopenhagen, Denmark
Pages1-8
Publication statusPublished - 2015
Event20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark
Duration: 19 Jul 201524 Jul 2015

Conference

Conference20th International Conference on Composite Materials, ICCM 2015
Country/TerritoryDenmark
CityCopenhagen
Period19/07/201524/07/2015

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