서지주요정보
샌드위치 구조를 갖는 전자기파 흡수체에 관한 연구 = A study on electromagnetic wave absorbing sandwich structures
서명 / 저자 샌드위치 구조를 갖는 전자기파 흡수체에 관한 연구 = A study on electromagnetic wave absorbing sandwich structures / 박기연.
저자명 박기연 ; Park, Ki-Yeon
발행사항 [대전 : 한국과학기술원, 2004].
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소장정보

등록번호

8014989

소장위치/청구기호

학술문화관(문화관) 보존서고

MAE 04010

SMS전송

도서상태

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초록정보

Recently, the problems about the absorption and the interference shielding of the electromagnetic wave have been very important issues for commercial and military purposes. The main purpose of stealth technique is to reduce the Radar Cross Section (RCS) of the aircrafts or warships. Many studies about the Radar Absorbing Materials (RAM) and the Radar Absorbing Structures (RAS) have been performed for many years. This study deals with the RAS having sandwich structures in the X-band (8.2~12.4GHz) frequencies. Generally, sandwich structures have an advantage of high flexural stiffness to weight ratio over laminated composites. Glass/epoxy composites containing conductive carbon blacks and carbon/epoxy composites were used for the face sheets. Polyurethane (PU) foams containing multi-walled carbon nano tube (MWNT) were used for the core. Their permittivities in the X-band were measured using the transmission line technique. The reflection loss characteristics for multi-layered sandwich structures were obtained using the theory about transmission and reflection in a multi-layered medium. Three cases were selected for fabrication of specimens. Their reflection losses in the X-band were measured using the free space technique. Experimental results were in good agreements with simulated ones in 10 dB absorbing bandwidth but center frequencies of them had small changes.

서지기타정보

서지기타정보
청구기호 {MAE 04010
형태사항 v, 55 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Ki-Yeon Park
지도교수의 한글표기 : 이인
지도교수의 영문표기 : In Lee
학위논문 학위논문(석사) - 한국과학기술원 : 항공우주공학전공,
서지주기 참고문헌 : p. 53-54
주제 전자기파 흡수체
샌드위치 구조
X-band 주파수
ELECTROMAGNETIC
SANDWICH STRUCTURES
RAS(RADAR ABSORBING STRUCTURES)
X-BAND FREQUENCIES
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