서지주요정보
광섬유 센서를 이용한 복합재 적층판의 충격 및 좌굴거동 모니터링 = Monitoring of impact and buckling behavior of composite plates using fiber optic sensors
서명 / 저자 광섬유 센서를 이용한 복합재 적층판의 충격 및 좌굴거동 모니터링 = Monitoring of impact and buckling behavior of composite plates using fiber optic sensors / 노희석.
저자명 노희석 ; Roh, Hee-Seok
발행사항 [대전 : 한국과학기술원, 1999].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8009592

소장위치/청구기호

학술문화관(문화관) 보존서고

MAE 99008

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The effect of low-velocity impact damage on the residual compressive strength of graphite/epoxy laminates was investigated. The buckling behavior of delaminated composite laminates after low velocity impact was monitored by fiber optic sensors. The impact tests were performed with a drop-weight machine. The ultrasonic C-scan was applied to determine multiple delaminations at various impact energy levels. Compression-After-Impact(CAI) tests were performed to determine the residual strength of the specimens. Visible cracks on the back surface were observed at impact energy level of 4.5J. Over 4.5J impact energy, the residual compressive strength rapidly decreased. In the case of 9J, the reduction of compressive strength was about 26%. In order to monitor the buckling behavior of specimens with multiple delaminations, fiber optic sensors(FOS) were embedded in composite laminates. Strain gages were attached on the surface of specimens to compare with FOS in compression tests. As a result, strain gages only detected the surface strain but FOS monitored the deformation of the inside layers and the reduction of local bending stiffness. FOS were superior to strain gages in monitoring the buckling behavior in the region of multiple delaminations.

서지기타정보

서지기타정보
청구기호 {MAE 99008
형태사항 [iv], 51 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Hee-Seok Roh
지도교수의 한글표기 : 홍창선
지도교수의 영문표기 : Chang-Sun Hong
학위논문 학위논문(석사) - 한국과학기술원 : 항공우주공학과,
서지주기 참고문헌 : p. 19-21
주제 충격
좌굴
압축강도
광섬유 센서
복합재료
Impact
Buckling
Compresion strength
Fiber optic sensor
Composites
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