서지주요정보
탄소섬유 에폭시 복합재료의 경화모니터링에 관한 연구 = A study on the cure monitoring of carbon fiber epoxy composite materials
서명 / 저자 탄소섬유 에폭시 복합재료의 경화모니터링에 관한 연구 = A study on the cure monitoring of carbon fiber epoxy composite materials / 김진수.
저자명 김진수 ; Kim, Jin-Soo
발행사항 [대전 : 한국과학기술원, 1996].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8006201

소장위치/청구기호

학술문화관(문화관) 보존서고

DME 96028

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The on-line cure monitoring during the cure process of fiber reinforced resin matrix composite material is important for the better quality and productivity. In this study, a cure monitoring system which consists of an electric circuit, a sensor and a personal computer was developed to on-line monitor the dielectric properties of carbon fiber epoxy composite materials. Also, the cure kinetic model of carbon fiber epoxy composite materials was developed by curve fitting of differential scanning calorimetry (DSC) data and was used for the reference of the degree of cure. The sensitivity of the dielectric sensor for the on-line cure monitoring was analyzed by finite element method. Using the analytical results, the equation for the capacitance of the sensor as well as the effective range that the electric field affects the medium were obtained. Also, more sensitive sensor design than usual planar interdigital capacitor was suggested using the three dimensional FE analysis and experiment on the sensor types. Also, the start and end points of cure and the relationship between the dissipation factor and the degree of cure were obtained by comparing the dissipation factor from the dielectric properties with the degree of cure from the DSC data. The relationship between the dissipation factor and the degree of cure was tested under various temperature profiles. In addition, an insitu viscosity measuring device was developed to match the measured dissipation factor to the viscosity of the thermosetting resin of the composite material. The autoclave cure cycle to prevent thermal overshoot during the exothermic reaction of thick thermosetting resin composite materials was suggested from the modification of the conventional cure cycle. To modify the conventional cure cycle, the simulation program to predict the temperature distribution of thick thermosetting composite materials was used. The steps of cooling and reheating were introduced into the conventional cure cycle to prevent thermal overshoot during the exothermic reaction and were determined using the parameters of the cure rate and the center temperature of the laminate. From the experimental result, it was found that the modified cure cycle can reduce thermal overshoot effectively.

서지기타정보

서지기타정보
청구기호 {DME 96028
형태사항 xvi, 152 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jin-Soo Kim
지도교수의 한글표기 : 이대길
지도교수의 영문표기 : Dai-Gil Lee
수록잡지명 : "On-line cure monitoring and viscosity measurement of carbon fiber epoxy composite materials". Journal of Materials Processing Technology. Elsevier Science Publishers B. V., Vol. 37, pp. 405-416 (1993)
학위논문 학위논문(박사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 64-70
주제 복합재료
경화모니터링
유전기법
점성계수
경화사이클
Composite Material
Cure Monitoring
Dielectrometry
Viscosity
Cure Cycle
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