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Compressive Behavior of Carbon/Epoxy Composites under High Pressure Environment-Strain Rate Effect  

이지훈 (경희대학교 대학원 기계공학과)
이경엽 (경희대학교 테크노공학대학)
Publication Information
Journal of the Korean Society for Precision Engineering / v.21, no.4, 2004 , pp. 148-153 More about this Journal
Abstract
It is well-known that the mechanical behavior of fiber-reinforced composites under hydrostatic pressure environment is different from that of atmospheric pressure environment. It is also known that the mechanical behavior of fiber-reinforced composites is affected by a strain rate. In this work, we investigated the effect of strain rate on the compressive elastic modulus, fracture stress, and fracture strain of carbon/epoxy composites under hydrostatic pressure environment. The material used in the compressive test was unidirectional carbon/epoxy composites and the hydrostatic pressures applied was 270㎫. Compressive tests were performed applying three strain rates of 0.05％/sec, 0.25％/sec, and 0.55％/sec. The results showed that the elastic modulus increased with increasing strain rate while the fracture stress was little affected by the strain rate. The results also showed that the fracture strain decreased with increasing strain rate.
Keywords
Hydrostatic pressure; Strain rate; Compressive elastic modulus; Fracture stress; Fracture strain;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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