Teng, T. L. and Wu, F. T.
(1968)
A two-dimensional ultrasonic model study of compressional and shear-wave diffraction patterns produced by a circular cavity.
Bulletin of the Seismological Society of America, 58
(1).
pp. 171-178.
ISSN 0037-1106.
https://resolver.caltech.edu/CaltechAUTHORS:20140801-104037512
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Abstract
Diffraction patterns of compressional (P) and shear (SV) waves produced by a circular hole were experimentally obtained on a two-dimensional ultrasonic model. The shapes of the Fresnel patterns were found to depend on, 1) α/λ, the ratio of the radius of the cylinder to the wavelength; and, 2) the wave type. The transitional zone between the illuminated and the shadow regions broadens, and the half-amplitude point shifts away from the geometrical shadow as α/λ decreases. For comparable α/λ, the shadow boundary of the SV wave appears to start much earlier than that of the P wave.
| Item Type: | Article |
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| Additional Information: | Copyright © 1968, by the Seismological Society of America.
Manuscript received June 12, 1967.
Research sponsored by the Air Force Office of Scientific Research, Office of Aerospace Research, United States Air Force, under AFOSR contract number AF-49(638)-1337.
We would like to thank Dr. Robert A. Phinney for an advance copy of his manuscript,
and Dr. Den L. Anderson for several valuable suggestions.
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| Funders: | | Funding Agency | Grant Number |
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| Air Force Office of Scientific Research (AFOSR) | AF-49(638)-1337 |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Caltech Division of Geological Sciences | 1464 |
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| Issue or Number: | 1 |
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| Record Number: | CaltechAUTHORS:20140801-104037512 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140801-104037512 |
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 47783 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
George Porter
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| Deposited On: | 01 Aug 2014 17:51 |
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| Last Modified: | 09 Mar 2020 13:19 |
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