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An investigation of the strain rate effect on the delamination toughness of fiber-reinforced composites in the hydrostatic pressure condition  

Ha Sung Rok (경희대학교 기계공학과)
Rhee Kyong Yop (경희대학교 테크노공과대학)
Kim Hyeon Ju (한국해양연구원)
Jung Dong Ho (한국해양연구원)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.11, 2005 , pp. 99-103 More about this Journal
Abstract
It is generally accepted that fracture toughness of fiber-reinforced polymer composites is affected by strain rate in an atmospheric pressure condition. For a present study, the strain rate effect on the fracture toughness of fiber-reinforced laminated composites in the hydrostatic pressure condition was investigated. For this purpose, fracture tests have been conducted using graphite/epoxy laminated composites applying three steps of the strain rate at 270 MPa hydrostatic pressure condition. The strain rates applied were $0.05\%/sec,\;0.25\%/sec$, and $0.55\%/sec$. Fracture toughness was determined from the work factor approach as a function of applied strain rate. The result showed that fracture toughness decreased as the strain rate increased. Specifically, the fracture toughness decreased $12\%$ as the strain rate increased from $0.05\%/sec$ to $0.55\%/sec$.
Keywords
Delamination; Fracture Toughness; Graphite/Epoxy Composites; Hydrostatic Pressure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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