Paper
11 November 2010 Time-resolved vibrational surface profile measurement of ultrasonic motor using stroboscopic oblique incidence interferometer
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Abstract
We propose a measurement method of vibrational surface profile for an ultrasonic motor (USM) using a stroboscopic oblique incidence interferometer. A time-dependent behaviors of the stator, one of the main components of the USM, is of considerable practical interest for development of new devices. owever it is difficult to observe its surface profile because there are diffused and vibrational surface. An obliquely incident light would offer advantage of the diffused surface because of higher reflectance. Furthermore, for detecting interferences at the vibrational surface profile, a modulated light source is synchronized with electrical signals of the USM. We are successful to detect a vibrational surface of the stator.
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Yasuhiro Mizutani, Tetsuo Iwata, and Yukitoshi Otani "Time-resolved vibrational surface profile measurement of ultrasonic motor using stroboscopic oblique incidence interferometer", Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 78550N (11 November 2010); https://doi.org/10.1117/12.871749
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KEYWORDS
Interferometers

Oscillators

Ultrasonics

Pulsed laser operation

Prisms

Reflectivity

Electrodes

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