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http://dx.doi.org/10.7234/kscm.2009.22.6.039

Aging Characteristics of Carbon Fiber/Epoxy Composite Ring Specimen  

Yoon, Sung-Ho (금오공과대학교 기계공학부)
Oh, Jin-Oh (금오공과대학교 기계공학과)
Publication Information
Composites Research / v.22, no.6, 2009 , pp. 39-44 More about this Journal
Abstract
The effect of exposure times on the aging characteristics of carbon fiber/epoxy composite ring specimen was evaluated using an accelerating aging tester. Combined exposure conditions, such as temperature, moisture, and ultraviolet, were applied up to 3000 hours. Tensile properties and flexural properties including the effect of curvature were evaluated on the specimens subject to various exposure times through a material testing system. Their aging surfaces were observed through a scanning electron microscope. According to the results, tensile modulus was little affected by the exposure times. However, tensile strength, at the early stage of the exposure times, increased due to physical aging and curing reaction, but tensile strength slightly decreased due to degradation as the exposure times increased. The flexural modulus and flexural strength increased at the early stage of the exposure times, but slightly decreased as the exposure times increased. Aging surfaces of the specimens examined using the scanning electron microscope revealed a different morphology in various exposure times and provided useful information for identifying the degradation in mechanical properties of the composite subject to various exposure times.
Keywords
carbon fiber/epoxy composite ring specimen; accelerating aging tester; combined exposure conditions; tensile properties; flexural properties; aging surfaces;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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