Vibration measurement by vibrating-plate holograms |
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Authors: | Seiichiro Kawase Toshio Honda Jumpei Tsujiuchi |
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Affiliation: | Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, O-Okayama, Meguro-ku, Tokyo, Japan |
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Abstract: | If a hologram of a vibrating object is recorded on a photographic plate which vibrates synchronously with the object, the reconstructed image produces equi-amplitude fringes of the object vibration, the amplitude of which is reduced by a constant determined from the amplitude of the plate vibration. This phenomenon can be used as a method to extend the measurable range of vibration amplitudes, and some experimental results are shown. |
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