한국공작기계학회:학술대회논문집 (Proceedings of the Korean Society of Machine Tool Engineers Conference)
- 한국공작기계학회 1999년도 추계학술대회 논문집 - 한국공작기계학회
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- Pages.476-481
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- 1999
저어널 베어링의 진동 계측을 위한 초음파 응용 기술에 관한 연구
A Study on the Ultrasonic Technique for Measurement of Vibration in Journal Bearing
초록
This paper describes a new technique for measurement of the displacement less than one-quarter of the wavelength of ultrasonic wave using ultrasonic pulse-echo method. The technique determines the displacement of a journal bearing from the amplitudes of the total reflected waves from the surface of journal inside the bearing. Vibration of journal bearing can be measured without using a very high frequency ultrasonic transduce over 100MHz which must be used in the conventional techniques for the precision measurement of a small displacement. The method also requires no inversion process to extract the thickness from the waveforms of the reflected waves, so that it makes possible on-line measurement of the vibration of journal bearing.
키워드