A fractographic study on the effects of hygrothermal conditioning on carbon fiber/epoxy laminates submitted to axial compression

A fractographic study on the effects of hygrothermal conditioning on carbon fiber/epoxy laminates submitted to axial compression

Author Opelt, C. V. Google Scholar
Paiva, J. M. F. Google Scholar
Candido, G. M. Autor UNIFESP Google Scholar
Rezende, M. C. Autor UNIFESP Google Scholar
Abstract This paper is part of a series of fractographic studies on fiber-reinforced polymer composites submitted to compression, which attempts to fill the gap in the composite failure analysis. Here, the effect of the hygrothermal conditioning is assessed for composite laminates manufactured from a carbon fiber/epoxy resin prepregs, which used plain weave fiber arrangement. The laminate was trimmed into compression test specimens, according to the ASTM D3410 standard. After the test, the aspects of the failure were investigated using a scanning electron microscope, so the compression failure modes could be identified. The fractographic analysis indicates that the lower compressive strength of the conditioned specimens was caused by a decrease in the stiffness of the polymer matrix, due to the plasticizing effect of the moisture exposure.
Keywords Composites
Fractography
Failure modes
Aging
Failure analysis
Language English
Sponsor Technological Institute of Aeronautics (ITA)
CAPES/PVNS
CNPq
Grant number CNPq: 439129/2016-8
CNPq: 870484/1997-4
CNPq: 303287/2013-6
CNPq: 150697/2014-7
Date 2017
Published in Engineering Failure Analysis. Oxford, v. 79, p. 342-350, 2017.
ISSN 1350-6307 (Sherpa/Romeo, impact factor)
Publisher Pergamon-Elsevier Science Ltd
Extent 342-350
Origin http://dx.doi.org/10.1016/j.engfailanal.2017.05.006
Access rights Closed access
Type Article
Web of Science ID WOS:000405538800029
URI http://repositorio.unifesp.br/handle/11600/51368

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