Acoustic Interactions with Submerged Elastic Structures - Part Ii : Propagation, Ocean Acoustics and Scattering.
Title:
Acoustic Interactions with Submerged Elastic Structures - Part Ii : Propagation, Ocean Acoustics and Scattering.
Author:
Guran, Ardéshir.
ISBN:
9789812811950
Personal Author:
Physical Description:
1 online resource (389 pages)
Series:
Series on Stability, Vibration and Control of Systems, Series B ; v.5
Series on Stability, Vibration and Control of Systems, Series B
Contents:
Contents -- Foreword -- Preface -- Contributors -- Chapter 1: Discrete Spectral Analysis for Solitary Waves -- 1. Introduction -- 2. Pseudospectral Method -- 3. Formation of Solitons in the KdV Systems -- 4. Other Solitonic Systems -- 5. Closing Remarks -- 6. Acknowledgements -- 7. References -- Chapter 2: Propagation and Interaction of Waves in Nonlinear-Elastic Solids with Microstructures -- 1. Introduction -- 2. Basic Approaches to the Construction of Mathematical Models of Elastic Media with Inner Structure -- 3. Structural-Phenomenological Models -- 4. Dispersion Equations -- 5. Evaluation of Material Constants -- 6. Nonlinear Plane Stationary Waves -- 7. Nonlinear Wave Beams -- 8. Resonant Interaction of Elastic Waves in Nonlinearly-Elastic Solid with Microstructure -- 9. Research Plans -- 10. References -- Chapter 3: Matched Field Processing: A Powerful Tool for the Study of Oceans and Scatterers -- 1. Introduction -- 2. Deep Ocean Tomography -- 3. The Determination of Shallow Water Bottom Properties -- 4. Targets -- 5. Conclusions -- 6. Acknowledgements -- 7. References -- Chapter 4: Progress in Underwater Acoustic Modeling -- 1. Introduction -- 2. Model Categories -- 3. Applications -- 4. Future Directions -- 5. References -- Chapter 5: Reflectivity Response of a Submerged Layer with Density Sound Velocity and Absorbtion Gradients -- 1. Introduction -- 2. The Gradient Medium -- 3. Acoustic Field in an Inhomogeneous Medium -- 4. Reflection by an Inhomogeneous Layer Submerged in Water -- 5. Conclusions -- 6. References -- Chapter 6: Mathematical Aspects of Wave Phenomena in a Wave Guide with Elastic Walls and Operator Polynomials -- 1. Introduction -- 2. The Mathematical Background -- 3. The Physical Model under Consideration. Wave Numbers -- 4. Modes -- 5. The Energy Fluxes.
6. The Non-Homogeneous Problem: Preliminary Consideration -- 7. The Non-Homogeneous Problem in the Cross-Section. Definition of the Generalized Solution -- 8. The Generalized Eigenfunctions of the Problem in the Cross-Section -- 9. The Non-Homogeneous Problem in the Cross-Section -- 10. The Abstract Differential Equation Formulation for the Non-Homogeneous Problem -- 11. Fourier Method for the Wave Guide with Elastic Walls -- 12. Critical Frequencies -- 13. Conclusions -- 14. References -- Chapter 7: On Some General Mathematical Properties of the System Elastic Plate - Acoustic Medium -- 1. BVCP in an Arbitrary Plane Domain -- 2. Boundary Value Contact Problem in an Infinite Domain -- 3. On the Uniqueness of a Solution of BVCP -- 4. Optical Theorem for Acoustic Scattering -- 5. Conclusion -- 6. Acknowledgment -- 7. References -- Chapter 8: Acoustic Scattering from Finite Length Cylinders Encapped by Two Hemispheres -- 1. Introduction -- 2. Study of the Cylindrical Objects -- 3. Study of the Spherical Objects -- 4. Study of Objects Consisting of a Cylindrical Part Bounded by Two Hemispherical Endcaps -- 5. Conclusion -- 6. Acknowledgements -- 7. References -- Chapter 9: Acoustic Scattering from a Circular Cylindrical Shell Immersed in Water. Generation and Reradiation of Guided Waves -- 1. Introduction -- 2. Numerical and Experimental Results with "Classic" MIIR -- 3. Discussion and Interpretation -- 4. Numerical and Experimental Results with MIIR "In Propagation" -- 5. Radiation of a Guided Wave at the Extremity of a Cylindrical Shell -- 6. Conclusion -- 7. References.
Chapter 10: The Finite Element/Boundary Element Approach to the Radiation and Scattering of Submerged Shells Including Internal Structure or Equipment -- 1. Introduction -- 2. Fundamentals -- 3. Examples -- 4. Conclusions -- 5. Recommendations for the Future -- 6. Acknowledgements -- 7. References -- Chapter 11: Resonance Extraction Phase Matching Method and the Surface Paths for Finite Elastic Cylinders -- 1. Introduction -- 2. The Resonance Spectrum Extraction in Experiment -- 3. The Phase Matching Method for Resonance Predictions -- 4. Time Sequences of Elastic Echoes -- 5. Conclusion -- 6. Acknowledgements -- 7. References -- Chapter 12: Nonlinear Waves in Thermoelastic Solids Undergoing Phase Transitions -- 1. Introduction -- 2. Field Equations and Jump Conditions -- 3. A Thermoelastic Material -- 4. The Notion of Driving Traction -- 5. The Kinetic Relation and Nucleation Criterion -- 6. The Impact Problem -- 7. Acknowledgment -- 8. References -- Subject Index.
Abstract:
The interaction of acoustic fields with submerged elastic structures, both by propagation and scattering, is being investigated at various institutions and laboratories world-wide with ever-increasing sophistication of experiments and analysis. This book offers a collection of contributions from these research centers that represent the present state-of-the-art in the study of acoustic elastic interaction, being on the cutting edge of these investigations. This includes the description of acoustic scattering from submerged elastic objects and shells by the Resonance Scattering Theory of Flax, Dragonette and Überall, and the interaction of these phenomena in terms of interface waves. It also includes the use of this theory for the purpose of inverse scattering, i.e. the determination of the scattered objects properties from the received acoustic backscattered signals. The problem of acoustically excited waves in inhomogeneous and anisotropic materials, and of inhomogeneous propagating waves is considered. Vibrations and resonances of elastic shells, including shells with various kinds of internal attachments, are analyzed. Acoustic scattering experiments are described in the time domain, and on the basis of the Wigner-Ville distribution. Acoustic propagation in the water column over elastic boundaries is studied experimentally both in laboratory tanks, and in the field, and is analyzed theoretically. Ultrasonic nondestructive testing, including such aspects like probe modelling, scattering by various types of cracks, receiving probes and calibration by a side-drilled hole is also studied in details. A comprehensive picture of these complex phenomena and other aspects is presented in the book by researchers that are experts in each of these domains, giving up-to-date accounts of the field in all these aspects. Contents: Discrete Spectral Analysis
for Solitary Waves (J Engelbrecht et al.); Propagation and Interaction of Waves in Nonlinear-Elastic Solids with Microstructures (V I Erofeyev); Matched Field Processing: A Powerful Tool for the Study of Oceans and Scatterers (A Tolstoy); Progress in Underwater Acoustic Modeling (P C Etter); Reflectivity Response of a Submerged Layer with Density, Sound Velocity and Absorbtion Gradients (R Carbó-Fité); Mathematical Aspects of Wave Phenomena in a Wave Guide with Elastic Walls and Operator Polynomials (B P Belinskiy & J P Dauer); On Some General Mathematical Properties of the System Elastic Plate - Acoustic Medium (B P Belinskiy); Acoustic Scattering from Finite Length Cylinders Encapped by Two Hemispheres (D Decultot et al.); Acoustic Scattering from a Circular Cylindrical Shell Immersed in Water. Generation and Reradiation of Guided Waves (F Léon & G Maze); The Finite Element/Boundary Element Approach to the Radiation and Scattering of Submerged Shells Including Internal Structure or Equipment (R Miller); Resonance Extraction, Phase Matching Method and the Surface Paths for Finite Elastic Cylinders (X-L Bao); Nonlinear Waves in Thermoelastic Solids Undergoing Phase Transitions (J K Knowles). Readership: Nonlinear scientists.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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