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Wideband optical measurements of ultrasonic pulsesCalibrated masurements of acoustic surface wave pulses by wide bandwidth differential interferometry are described. By interrogating the interference pattern formed by superimposing two optical beams reflected from the surface at slightly separated points, an output signal proportional to instantaneous surface particle displacement is obtained. Response to ideal propagating step function displacements is analyzed and measurements of gated pulses are described.
Document ID
19820003259
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Claus, R. O. (Virginia Polytechnic Inst. and State Univ. Blacksburg, United States)
Cantrell, J. H., Jr. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1981
Publication Information
Publication: Va. Polytech. Inst. and State Univ. Opt. Fiber Interferometer for the Study of Ultrasonic Waves in Composite Mater.
Subject Category
Composite Materials
Meeting Information
Meeting: Ultrasonics Intern.
Location: Brighton
Start Date: June 1, 1981
Accession Number
82N11132
Funding Number(s)
CONTRACT_GRANT: NSF ECS 79-25340
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19820003248Collected WorksOptical fiber interferometer for the study of ultrasonic waves in composite materials
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