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Holographic Characterization of Aerospace Components FREE

[+] Author Affiliations
R. K. Erf, J. P. Waters

United Aircraft Research Laboratories, East Hartford, CT

Paper No. 71-GT-74, pp. V001T01A074; 15 pages
doi:10.1115/71-GT-74
From:
  • ASME 1971 International Gas Turbine Conference and Products Show
  • ASME 1971 International Gas Turbine Conference and Products Show
  • Houston, Texas, USA, March 28–April 1, 1971
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7982-5
  • Copyright © 1971 by ASME

abstract

Holography, by virtue of its three-dimensional recording characteristic, offers a process for performing interferometry on nonplanar, diffusely reflecting objects. As such, it has found application in many areas. Furthermore, the use of pulsed laser techniques provides a method for studying dynamic, nonrecurring three-dimensional events, with or without the interferometric feature. More importantly, the pulsed holographic capability eliminates environmental vibration problems, often encountered in holography, thereby permitting its use in hostile, field situations whether the subject be static or dynamic. A holographic study program to examine possible applications of both the CW and pulsed laser methods has been in progress at United Aircraft Research Laboratories for several years. More recent investigations in this area are summarized with the intent of describing the several tools which have been developed and are now available for studying the various problems confronting the aerospace industry. Several examples will be described. Investigations at UARL in this particular area have included examination of various PT-6, JT-9D, and JT-8D components, as well as more general studies of fuel nozzle spray characteristics, aerospace materials bond inspection, and rotor flow visualization studies.

Copyright © 1971 by ASME
This article is only available in the PDF format.

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