서지주요정보
광섬유 센서를 이용한 우주환경하에서 복합재료 적층시편의 노화에 따른 열팽창계수변화 측정 = Measurement of CTE change in composite laminate with aging under space environment using fiber optic sensors
서명 / 저자 광섬유 센서를 이용한 우주환경하에서 복합재료 적층시편의 노화에 따른 열팽창계수변화 측정 = Measurement of CTE change in composite laminate with aging under space environment using fiber optic sensors / 강상국.
발행사항 [대전 : 한국과학기술원, 2002].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8012819

소장위치/청구기호

학술문화관(문화관) 보존서고

MAE 02002

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

In this research, the change of coefficient of thermal expansion(CTE) of graphite/epoxy composite laminate under space environment was measured using fiber optic sensors. Two Fiber Bragg grating(FBG) sensors have been investigated for the simultaneous measurement of thermal strain and temperature. Low earth orbit(LEO) conditions with high vacuum, ultraviolet and thermal cycling environments were simulated in a thermal vacuum chamber. In pre-test, a FBG temperature sensor was calibrated and a FBG strain sensor was verified through the comparison with the electric strain gauge(ESG) attached on an aluminum specimen in the same temperature range with the thermal cycling. The change of the CTE in composite laminate exposed to space environment was measured for intervals of aging cycles in real time. As a whole, there was no abrupt change of the CTE after 400 aging cycles. After aging, however, the CTE decreased a little and then increased again at higher temperature region than room temperature and the CTE showed a slight increase at lower temperature region than room temperature. These changes are caused by outgassing, moisture desorbption and matrix cracking, etc.

서지기타정보

서지기타정보
청구기호 {MAE 02002
형태사항 vi, 51 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Sang-Guk Kang
지도교수의 한글표기 : 김천곤
지도교수의 영문표기 : Chun-Gon Kim
학위논문 학위논문(석사) - 한국과학기술원 : 항공우주공학전공,
서지주기 참고문헌 : p. 26-28
주제 광섬유 센서
열팽창계수
우주환경
복합재료
fiber optic sensor
CTE
space environment
composite
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