NONINVASIVE, NONCONTACT FLUID DETECTION IN SUBMERGED CONTAINERS USING SWEPT FREQUENCY ULTRASONIC TECHNIQUE.

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Description

A noncontact technique has been developed for the remote interrogation of submerged and limited access metal containers for determining the presence of fluid inside, The technique is based on the damping effect of water on the thickness mode resonance of the container wall. A transmitter-receiver pair of piezoelectric transducers is placed at a standoff distance of 5 mm from the container wall with the water outside the container providing ultrasonic coupling medium. The excitation frequency applied to the transmitter is swept between 0.8-4.0M Hz and the receiver transducer detects the signal, in the form of a frequency spectrum, returned from ... continued below

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5 p.

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Laboratory, Los Alamos National January 1, 2001.

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Description

A noncontact technique has been developed for the remote interrogation of submerged and limited access metal containers for determining the presence of fluid inside, The technique is based on the damping effect of water on the thickness mode resonance of the container wall. A transmitter-receiver pair of piezoelectric transducers is placed at a standoff distance of 5 mm from the container wall with the water outside the container providing ultrasonic coupling medium. The excitation frequency applied to the transmitter is swept between 0.8-4.0M Hz and the receiver transducer detects the signal, in the form of a frequency spectrum, returned from the wall. By analyzing the variation in the observed spectrum, it is straightforward to determine whether the container is fluid or air backed thereby detecting if the container has leaked.

Physical Description

5 p.

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  • Submitted to: 2001 IEEE International Ultrasonic Symposium, October 2001, Atlanta

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  • Report No.: LA-UR-01-5703
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975821
  • Archival Resource Key: ark:/67531/metadc931921

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Dec. 12, 2016, 4:29 p.m.

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Laboratory, Los Alamos National. NONINVASIVE, NONCONTACT FLUID DETECTION IN SUBMERGED CONTAINERS USING SWEPT FREQUENCY ULTRASONIC TECHNIQUE., article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc931921/: accessed November 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.