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Author: Harlan Glen Frey
Publisher:
ISBN:
Category : Sound
Languages : en
Pages : 96
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Book Description
Author: Harlan Glen Frey
Publisher:
ISBN:
Category : Sound
Languages : en
Pages : 96
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Book Description
Author: Herbert Überall
Publisher: CRC Press
ISBN: 9782881245138
Category : Science
Languages : en
Pages : 364
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Book Description
These 13 papers were part of a May 1989 symposium at the Catholic University of America, Washington, D.C., the home of much of the early theoretical and experimental work in acoustic resonance scattering. Topics include a historical survey of the development of the subject, a description of the MIIR and short- pulse methods, and new developments such as the derivation of exact acoustic background shells, application of the method of moments, and S-matrix product expansions. Annotation copyright by Book News, Inc., Portland, OR
Author: Kevin Lee Williams
Publisher:
ISBN:
Category : Sound-waves
Languages : en
Pages : 322
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Book Description
Author: D. G. Mercer
Publisher:
ISBN:
Category : Fluids
Languages : en
Pages : 108
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Book Description
Author: Eugen Skudrzyk
Publisher: Springer Science & Business Media
ISBN: 3709182557
Category : Science
Languages : en
Pages : 816
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Book Description
Research and scientific progress are based upqn intuition coordinated with a wide theoretical knowledge, experimental skill, and a realistic sense of the limitations of technology. Only a deep insight into physical phenomena will supply the necessary skills to handle the problems that arise in acoustics. The acoustician today needs to be well acquainted with mathematics, dynamics, hydrodynamics, and physics; he also needs a good knowledge of statistics, signal processing, electrical theory, and of many other specialized subjects. Acquiring this background is a laborious task and would require the study of many different books. It is the goal of this volume to present this background in as thorough and readable a manner as possible so that the reader may turn to specialized publications or chapters of other books for further information without having to start at the preliminaries. In trying to accomplish this goal, mathematics serves only as a tool; the better our understanding of a physical phenomenon, the less mathematics is needed and the shorter and more concise are our computa tions. A word about the choice of subjects for this volume will be helpful to the reader. Even scientists of high standing are frequently not acquainted with the fundamentals needed in the field of acoustics. Chapters I to IX are devoted to these fundamentals. After studying Chapter I, which dis cusses the units and their relationships, the reader should have no difficulty converting from one system of units to any other.
Author: William Thompson
Publisher:
ISBN:
Category :
Languages : en
Pages : 234
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Book Description
Problems of acoustic radiation and scattering from a pair of finite sized eccentrically positioned spheres are analyzed. Solutions are obtained for the radiated and scattered waves in the form of series of wave harmonics. The analysis leads to infinite sets of linear algebraic equations for the unknown modal pressure coefficients. Approximate solutions are obtained by truncating to finite size and solving numerically. The radiation impedance and farfield directivity of an arbitrary spherical source within a fluid sphere (idealization of spherical acoustic lens with internal focal point) is computed. (Author).
Author: Allan D. Pierce
Publisher: Academic Press
ISBN: 1483257762
Category : Technology & Engineering
Languages : en
Pages : 395
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Book Description
Underwater Scattering and Radiation describes the relevant theoretical foundations of underwater scattering and radiation. Acoustic scattering from elastic solids is discussed, and variational formulations in acoustic radiation and scattering are presented. Surface waves and quasi-cylindrical modes are also explored, along with the Helmholtz-Kirchhoff integral corollaries. Comprised of two chapters, this volume begins with a comprehensive account of scattering by elastic objects, focusing on the classic idealized shapes of spheres and infinite cylinders. The reader is introduced to important concepts such as normal modes, the S-matrix, and the T-matrix as well as resonances, whispering gallery modes, Franz modes, and Stoneley waves. Subsequent sections describe methods for treating scattering by elastic bodies of more general shapes. The T-matrix formalism is discussed and then applied to spheroidal scatterers and finite cylinders. The second chapter analyzes how variational principles can be used in acoustics, with the choice of topics directed toward applications to underwater acoustic radiation and scattering. This book will be of interest to physicists.
Author: Ardshir Guran
Publisher: World Scientific
ISBN: 9789812778536
Category : Mathematics
Languages : en
Pages : 522
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Book Description
This series of volumes constitutes an outstanding collection of contributions by the most active research workers in the area of acoustics and mechanics. It brings the reader up to date on the status of the various aspects of research in this field. The volumes should preserve their value for a long time, as they represent a monument to the achievements of human research capabilities in the underwater-acoustics aspects of the environment.
Author: S. J. Ansley
Publisher:
ISBN:
Category : Echo scattering layers
Languages : en
Pages : 27
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Book Description
The sphere, which is located in an acoustic fluid, is composed of an arbitrary number of concentric layers of elastic solids and fluids. It is excited by a time-harmonic incident plane wave. The exact linear equations of elasto-dynamics, visco-dynamics and acoustics are solved to obtain, via the finite element method, a matrix equation which connects the interface displacements and external stresses in the spectral domain. The pressure scattered to the far-field is obtained from the radial spectral displacements of the outer surface. Numerical results of scattered sound spectra are presented for the case of an aluminium shell with and without a GRP (Glass Reinforced Plastics) coating. (Great Britain).
Author: Per-Åke Jansson
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
