Axial collapse characteristics of CFRP composites with stacking conditions under the hygrothermal
2012
CFRP composite material has superior specific strength and rigidity compared to metallic material, and is
widely adopted in the various fields.
Exceptional corrosion resistance enables the acceptance in maritime structural members such as ship and oildrilling
machineries.
However, CFRP composite material has the weakness in hygrothermal environment and crash environment.
Especially, moisture ingress into composite material under hygrothermal environment can change molecule
arrangement and chemical properties. In addition, interface characteristics and component material properties
can be degraded.
An experimental investigation was carried out to study the crash evaluations of CFRP composites to dynamic
crushing by impact loading.
We have made a collapse experiment to research into the difference of absorbed energy and deformation mode
between moisture absorbed specimen and non-moisture absorbed specimen.
As a result, the effect of moisture absorption and impact loads of approximately 30~50% reduction in strength
are shown.
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