Environmental effects on mode II fatigue delamination growth in an aerospace grade carbon/epoxy composite |
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Authors: | Benoit LandryGabriel LaPlante Luc R LeBlanc |
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Affiliation: | Département de génie mécanique, Université de Moncton, Moncton, New Brunswick, Canada E1A 3E9 |
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Abstract: | An investigation of the effects of water, hydraulic fluid and deicing fluid exposure on mode II delamination propagation in an aerospace grade composite is presented. All exposed specimens suffered a loss in delamination toughness and an increase in fatigue delamination growth rate, which was particularly significant for deicing fluid exposure. The number of cycles for delamination onset was also reduced by these exposures, although scanning electron micrographs showed no significant differences between the fracture pattern of dry and exposed specimens. It was also shown that environmental effects can be simply accounted for in a cohesive zone based finite element model. |
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Keywords: | B Delamination B Environmental degradation D Mechanical testing C Finite element analysis (FEA) |
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