Apparatus for detecting the displacements of points of excited structures
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United States of America Patent
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Jul 2, 1985
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N/A
app pub date -
Mar 9, 1982
filing date -
Mar 23, 1981
priority date (Note) -
Expired
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Abstract
An apparatus for detecting the displacements of points of structures which are excited either by artificially or naturally produced forces comprises, in combination: coherent-light vibration-sensing means composed of at least one group of two laser-beam interferometers focused at a common target point of a structure; angle-sensing means rigidly connected to the interferometers of at least either group, and means for processing the interferometric data coming from said vibration-sensing means and the angular data coming from said angle-sensing means.
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