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Nondestructive Interfacial Evaluation and Cure Monitoring of Carbon Fiber/Epoxyacrylate Composite with UV and Thermal Curing Using Electro-Micromechanical Technique  

박종만 (경상대학교 응용화학공학부/고분자공학전공)
공진우 (한국기계연구원 복합재료그룹)
김대식 (경상대학교 응용화학공학부/고분자공학전공)
이재락 (한국화학연구원 화학소재연구부)
Publication Information
Polymer(Korea) / v.27, no.3, 2003 , pp. 189-194 More about this Journal
Abstract
Interfacial evaluation, damage sensing and cure monitoring of single carbon fiber/thermo setting composite with different curing processes were investigated using electro-micromechanical test. After curing, the residual stress was monitored by measurement of electrical resistance and then compared to various curing processes. In thermal curing case, matrix tensile strength, modulus and interfacial shear strength were higher than those of ultraviolet curing case. The shrinkage measured during thermal curing occurred significantly by matrix shrinkage and residual stress due to the difference in thermal expansion coefficient. The apparent modulus measured in the thermal curing indicated that mechanical and interfacial properties were highly improved. The reaching time to the same stress of thermal curing was faster than that of UV curing case.
Keywords
ultraviolet curing; cure monitoring; damage sensing; electrical resistivity; thermal expansion coefficient; interfacial shear strength;
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