Accession Number:

ADA066476

Title:

Impulse Wave Diffraction by Rigid Wedges and Plates.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

Report Date:

1978-12-01

Pagination or Media Count:

114.0

Abstract:

The problem of diffraction of acoustic signals by rigid barriers is studied empirically. Backward and forward diffraction from a 90 degree wedge and a thin plate are analyzed. Attempts to measure the diffracted energy in the illuminated region over the apex of the barrier, where direct and reflected signals coexist with diffracted, are discussed. Factors influencing the choice of the barriers physical dimensions and composition are listed, as are the problems surrounding the selection of an ideal sound source and receiver. Finally, the data are compared to the theory by Biot and Tolstoy Journal of the Acoustical Society of America, v. 29, 1957 and found to be in good agreement with predictions. Author

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE