Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2001.06b
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- Pages.392-397
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- 2001
Measurement of Vibration Mode Shape By Using Hilbert Transform
Hilbert Transform을 이용한 진동모드 측정
Abstract
This paper concerns on modal analysis of mechanical structures by using a continuous scanning laser Doppler vibrometer. In modal analysis the Hilbert transform based approach is superior to the Fourier transform based approach because of its fine accuracy and its flexible experimental settings. In this paper the Hilbert transform based approach is extended to measure area mode shape data of a structure by simply modifying the scanning pattern ranging the entire surface of the structure. The effectiveness of this proposed method is illustrated along with results of numerical simulation for a rectangular plate.
Keywords