서지주요정보
레이저 Doppler 속도 간섭계를 이용한 역학적 진동 해석 = Mechanical vibration analysis by using laser doppler velocity interferometer
서명 / 저자 레이저 Doppler 속도 간섭계를 이용한 역학적 진동 해석 = Mechanical vibration analysis by using laser doppler velocity interferometer / 윤재선.
저자명 윤재선 ; Yoon, Jae-Sun
발행사항 [서울 : 한국과학기술원, 1982].
Online Access 원문보기 원문인쇄

등록번호

4101618

소장위치/청구기호

학술문화관(문화관) 보존서고

MAP 8211

도서상태

이용가능

반납예정일

#### 초록정보

Laser Doppler Velocity Interferometer (LDVI) is extremely sensitive to the velocity, and subsequent displacement measurement, of a moving object, and in this work it is used in mechanical vibration analysis. In the initial stage of the research, the building floor vibrations are detected by using LDVI system (modified Michelson interferometer). For the elimination of transient noise vibration, an anti-vibration system using a steel plate and a pneumatic tire tube is used. By using this LDVI, the floor vibrations are detected and the frequencies are 96.4 Hz and 11.4 Hz, further a mechanical filter system is used to eliminate 96.4 Hz vibration and the lower frequency vibration of 11.4 Hz is found to transmit the filter. In the later part of the present research, a new laser Doppler heterodyning system is developed. It can measure very high velocities, which give the heterodyne frequency beyond the detector response time. The principle of the method is based on reduction of the Doppler frequency that a laser beam undergoes when it is reflected obliquely a moving mirror. By making the laser beams fall upon the moving mirror in angles $Θ_1$ and $Θ_2$, the heterodyne frequency to be obtained is $Δf=\frac{2vf}{c}(cosΘ_1-cosΘ_2)$, here v is mirror velocity and f is laser frequency. Thus the heterodyne frequency detected decreases by the factor of ($cosΘ_1-cosΘ_2$).

#### 서지기타정보

청구기호 {MAP 8211 [iv], 62 p. : 삽도 ; 26 cm 한국어 저자명의 영문표기 : Jae-Sun Yoon 지도교수의 한글표기 : 이상수 지도교수의 영문표기 : Sang-Soo Lee 학위논문(석사) - 한국과학기술원 : 물리학과, 참고문헌 수록 Vibration --Measurement. Laser interferometers. 레이저 분광법. --과학기술용어시소러스 도플러 효과. --과학기술용어시소러스 속도 측정. --과학기술용어시소러스 진동 해석. --과학기술용어시소러스 Laser doppler velocimeter.
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