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Analytical study of acousto/optical holography-interfacing methods for acoustical and optical holography NDT researchThe international status of the art of acousto optical imaging techniques adaptable to nondestructive testing and, interfacing methods for acoustical and optical holography in nondestructive testing research are studied. Evaluation of 20 different techniques encompassed investigation of varieties of detectors and detection schemes, all of which are described and summarized. Related investigation is reported in an Appendix. Important remarks on image quality, factors to be considered in designing a particular system, and conclusions and recommendations are presented. Three bibliographies are included.
Document ID
19770007469
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
El-Sum, H. M. A. (El-Sum Consultants Atherton, CA, United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1976
Publication Information
Publisher: NASA
Subject Category
Instrumentation And Photography
Report/Patent Number
M-197
NASA-CR-2775
Accession Number
77N14412
Funding Number(s)
CONTRACT_GRANT: NAS8-31783
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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