Effects of hygrothermal stress on the failure of CFRP composites
Journal article
Meng, Maozhou, Rizvi, Jahir, Grove, Stephen and Le, Huirong 2015. Effects of hygrothermal stress on the failure of CFRP composites. Composite Structures. https://doi.org/10.1016/j.compstruct.2015.08.016
| Authors | Meng, Maozhou, Rizvi, Jahir, Grove, Stephen and Le, Huirong |
|---|---|
| Abstract | This paper investigates the hygrothermal effects on the failure mechanisms in bending of carbon fibre reinforced polymer (CFRP) composites. Accelerated diffusion testing was carried out by immersion at 50 °C constant temperature and 70 bar hydrostatic pressure to study the effects of fresh or sea water diffusion into pre-preg CFRP laminates. Consequently the composite laminates were tested in bending after 1 and 3 months’ immersion. A three-dimensional finite element analysis (FEA) model was developed to couple the moisture diffusion, hygrothermal expansion and bending. Optical and field emission scanning electronic microscope (SEM) were employed to analyse the failure mechanisms of CFRP composites in bending after immersion. The study showed that the mechanical properties are significantly reduced after short term immersion due to the edge effects, while the damage to the fibre/polymer interface becomes more significant to laminate degradation after longer-term immersion. |
| Keywords | Fibre reinforced composites; Mechanics of composites; Finite element modelling |
| Year | 2015 |
| Journal | Composite Structures |
| ISSN | 2638223 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compstruct.2015.08.016 |
| Web address (URL) | http://hdl.handle.net/10545/620593 |
| hdl:10545/620593 | |
| Publication dates | 06 Aug 2015 |
| Publication process dates | |
| Deposited | 17 Oct 2016, 12:07 |
| Rights | Archived with thanks to Composite Structures |
| Contributors | University of Plymouth |
| File | |
| File | File Access Level Open |
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