Axial collapse characteristics of CFRP composites with stacking conditions under the hygrothermal

Yongjun Yang; Juho Choi; Woochae Hwang; Jaekyung Son; Hyun Kook; Kwanghee Im; Jaeki Sim; Inyoung Yang

doi:10.1117/12.923346

2 April 2012 Axial collapse characteristics of CFRP composites with stacking conditions under the hygrothermal

Yongjun Yang, Juho Choi, Woochae Hwang, Jaekyung Son, Hyun Kook, Kwanghee Im, Jaeki Sim, Inyoung Yang

Proceedings Volume 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering; 84090X (2012) https://doi.org/10.1117/12.923346
Event: Third International Conference on Smart Materials and Nanotechnology in Engineering, 2011, Shenzhen, China

Abstract

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.

Citation Download Citation

Yongjun Yang, Juho Choi, Woochae Hwang, Jaekyung Son, Hyun Kook, Kwanghee Im, Jaeki Sim, and Inyoung Yang "Axial collapse characteristics of CFRP composites with stacking conditions under the hygrothermal", Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 84090X (2 April 2012); https://doi.org/10.1117/12.923346

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