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논문 기본 정보

자료유형
학술저널
저자정보
조재환 (건국대학교 섬유공학과) 최준식 (건국대학교 섬유공학과)
저널정보
한국섬유공학회 한국섬유공학회지 한국섬유공학회지 제36권 제10호
발행연도
1999.1
수록면
776 - 782 (7page)

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Electromechanical properties of carbon fiber bundles under tensile deformation were investigated by measuring the strain dependence of electrical resistance. The variation in electrical resistance of carbon/glass hybrid fiber bundles was also measured to understand the effect of glass fibers on their electomechanical behavior. The strength, modulus and breaking strain of samples were dependent on the volume fraction of carbon fiber, and expecially, the absorbed energy largely increased when the volume fraction of carbon fibers was low. The variation in electrical resistance of hybrid fiber bundles was primarily dependent on that of the carbon fibers and even an addition of small amount of carbon fibers could show the electromechanical behavior. However, the strain sensitivity of electrical resistance was much higher for the samples rich in glass fiber. It was ascribed to the variation of contacts between carbon fibers due to the existence of glass fibers. The residual electrical resistance increased with increasing number of cycles of loading/unloading, and with increasing magnitude of elongation. The ratio of irreversible to reversible fractional electrical resistances was found to increase with increase in strain and volume fraction of glass fiber. Consequently, the hybrid carbon fiber bundles containing glass fibers many have a high potential for the electromechanical application such as smart composites.

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