한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 2003년도 춘계학술대회 논문집
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- Pages.443-446
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- 2003
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- 2005-8446(pISSN)
위상이동 ESPI를 이용한 진동실험에서 위상각에 따른 진동모드 형상의 변화
Vibration Mode Shape Changed by Phase Angle in Vibration Testing Using Phase-Shifting ESPI
초록
The vibration mode shape changed by the phase angle that can be controlled by phase-shifting ESPI system is discussed. For the phase-shifting ESPI experiment the stroboscopic illumination by using AOM(Acousto-Optic Modulator) is needed, and the initial phase angle can be adjusted by the program. The vibration mode shape is changed when the initial phase angle is changed. We examined the vibration mode shape change due to the initial phase angle change at each resonance frequency. Through this study, we found that in the vibration testing using phase-shilling ESPI the vibration mode shape is improved in the quality by adjusting exact phase angle and the error of the quantitative vibration analysis can be reduced.
키워드