In the field of nondestructive evaluation (NDE), the newly developed distributed point source method (DPSM) is gradually gaining popularity. DPSM is a semi-analytical technique used to calculate the ultrasonic field (pressure and velocity fields) generated by ultrasonic transducers. This technique is extended in this paper to model the ultrasonic field generated in multilayered nonhomogeneous fluid systems when the ultrasonic transducers are placed on both sides of the layered fluid structure. Two different cases have been analyzed. In the first case, three layers of nonhomogeneous fluids constitute the problem geometry; the higher density fluid is sandwiched between two identical fluid half-spaces. In the second case, four layers of nonhomogeneous fluids have been considered with the fluid density monotonically increasing from the bottom to the top layer. In both cases, analyses have been carried out for two different frequencies of excitation with various orientations of the transducers. As expected, the results show that the ultrasonic field is very sensitive to the fluid properties, the orientation of the fluid layers, and the frequency of excitation. The interaction effect between the transducers is also visible in the computed results. In the pictorial view of the resulting ultrasonic field, the interface between two fluid layers can easily be seen.
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e-mail: souravban@netscape.net
e-mail: tkundu@email.arizona.edu
e-mail: dominique.plcko@satie.ens-cachan.fr
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July 2006
Technical Papers
Ultrasonic Field Modeling in Multilayered Fluid Structures Using the Distributed Point Source Method Technique
Sourav Banerjee,
Sourav Banerjee
Department of Civil Engineering and Engineering Mechanics,
e-mail: souravban@netscape.net
University of Arizona
, Tucson, AZ 85721
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Tribikram Kundu,
Tribikram Kundu
Department of Civil Engineering and Engineering Mechanics,
e-mail: tkundu@email.arizona.edu
University of Arizona
, Tucson, AZ 85721
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Dominique Placko
e-mail: dominique.plcko@satie.ens-cachan.fr
Dominique Placko
Ecole Normale Superieure
, SATIE, 62, av. Du President Wilson, F-94235 Cachan cedex, France
Search for other works by this author on:
Sourav Banerjee
Department of Civil Engineering and Engineering Mechanics,
University of Arizona
, Tucson, AZ 85721e-mail: souravban@netscape.net
Tribikram Kundu
Department of Civil Engineering and Engineering Mechanics,
University of Arizona
, Tucson, AZ 85721e-mail: tkundu@email.arizona.edu
Dominique Placko
Ecole Normale Superieure
, SATIE, 62, av. Du President Wilson, F-94235 Cachan cedex, Francee-mail: dominique.plcko@satie.ens-cachan.fr
J. Appl. Mech. Jul 2006, 73(4): 598-609 (12 pages)
Published Online: October 20, 2005
Article history
Received:
February 23, 2005
Revised:
October 20, 2005
Citation
Banerjee, S., Kundu, T., and Placko, D. (October 20, 2005). "Ultrasonic Field Modeling in Multilayered Fluid Structures Using the Distributed Point Source Method Technique." ASME. J. Appl. Mech. July 2006; 73(4): 598–609. https://doi.org/10.1115/1.2164516
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