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A Three-Dimensional Interferometric Vibrational Mode Display

When the beam from a laser vibration interferometer is optically raster scanned over a vibrating surface, a phase-sensitive detector provides velocity information at any phase of the motion. These data are digitally processed and a hard copy print gives a three-dimensional isometric view of the complete vibrating surface of the test object frozen in time.

 

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Permalink: https://aes2.org/publications/elibrary-page/?id=3913


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