Swept frequency acoustic interferometry technique for chemical weapons verification and monitoring

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Nondestructive evaluation (NDE) techniques are important for rapid on-site verification and monitoring of chemical munitions, such as artillery shells and bulk containers. Present NDE techniques provide only limited characterizations of such munitions. This paper describes the development of a novel noninvasive technique, swept-frequency acoustic interferometry (SFAI), that significantly enhances the capability of munitions characterizations. The SFAI technique allows very accurate and simultaneous determination of sound velocity and attenuation of chemical agents over a large frequency range inside artillery shells, in addition to determining agent density. The frequency-dependent sound velocity and attenuation can, in principle, provide molecular relaxation properties of the ... continued below

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8 p.

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Sinha, D.N.; Anthony, B.W. & Lizon, D.C. March 1, 1995.

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Description

Nondestructive evaluation (NDE) techniques are important for rapid on-site verification and monitoring of chemical munitions, such as artillery shells and bulk containers. Present NDE techniques provide only limited characterizations of such munitions. This paper describes the development of a novel noninvasive technique, swept-frequency acoustic interferometry (SFAI), that significantly enhances the capability of munitions characterizations. The SFAI technique allows very accurate and simultaneous determination of sound velocity and attenuation of chemical agents over a large frequency range inside artillery shells, in addition to determining agent density. The frequency-dependent sound velocity and attenuation can, in principle, provide molecular relaxation properties of the chemical agent. The same instrument also enables a direct fill-level measurement in bulk containers. Industrial and other applications of this general-purpose technique are also discussed.

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8 p.

Notes

OSTI as DE95007854

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  • 3. international on-site analysis conference, Houston, TX (United States), 22-25 Jan 1995

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  • Other: DE95007854
  • Report No.: LA-UR--95-610
  • Report No.: CONF-950163--4
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 71607
  • Archival Resource Key: ark:/67531/metadc709279

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Office of Scientific & Technical Information Technical Reports

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  • March 1, 1995

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • March 1, 2016, 1:56 p.m.

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Sinha, D.N.; Anthony, B.W. & Lizon, D.C. Swept frequency acoustic interferometry technique for chemical weapons verification and monitoring, article, March 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc709279/: accessed June 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.