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http://dx.doi.org/10.7735/ksmte.2014.23.3.243

Collapse Characteristics of CFRP Hat Member with Outer Laminated Angle Changes under Hygrothermal Environment with Temperature Changes  

Yang, Yongjun (Dep. of Fire Safety Management, College of Dongkang)
Hwang, Woochae (Dep. of Mechanical Design Engineering, University of Chosun)
Yang, Inyoung (Dep. of Mechanical Design Engineering, University of Chosun)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.23, no.3, 2014 , pp. 243-249 More about this Journal
Abstract
Currently, CFRP composites are rapidly replacing steel plates, as they are lighter, stronger, and more elastic; however, they are poorly suited to hygrothermal and impact-collapsed environments because moisture can alter their molecule arrangement and chemical properties. In this study, environments are experimentally simulated in order to investigate changes in the moisture absorption inside a CFRP composite and to determine its weakest point. Moreover, changes in the moisture absorption ratio at temperatures of $60^{\circ}C$ and $80^{\circ}C$ are studied and compared in order to understand how changes in temperature affect moisture absorption inside CFRP composites. Results show that moisture absorption leads to a strength reduction of around 50%. In addition, the moisture absorption rate inside CFRP composites is shown to change rapidly with increasing temperature. Accordingly, it showed that the change in matrix also has a weak point.
Keywords
CFRP; Hygrothermal; Moisture absorption; Outer laminated angle; Static collapse; Absorption energy;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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