Publication:
Surface displacement measurements, strain and vibrational analysis using speckle meteorology techniques

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Authors
Lerchbacker, Alan Bernard
Subjects
Speckle
Laser
Metrology
Translation
Vibrations
Strain
Double-exposure
Advisors
Fuhs, Allen E.
Date of Issue
1980-03
Date
March 1980
Publisher
Monterey, California; Naval Postgraduate School
Language
en_US
Abstract
Double-exposure specklegrams were made of aluminum 2024-T4 rectangular plates. The double-exposure speckle technique was applied to the aluminum plate to measure in-plane translation and rotation and out-of-plane tilt. Strain and vibrational analyses were also conducted. The vibrational results were compared with results previously obtained using double-exposure time average holography to ascertain their applicability to naval engineering. Background in Fourier transforms, wave theory, Fraunhofer diffraction theory, and other aspects of physical optics were investigated to enhance the development of speckle metrology techniques. Results of the experiment indicate that speckle metrology used in conjunction with holography has significant potential for naval engineering applications. Further research is required to develop these techniques. These procedures currently are being utilized extensively in the aerospace industry and automotive research and development areas.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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