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Sound-waves. --- Vibration --- Waves

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The importance of seismic wave research lies not only in our ability to understand and predict earthquakes and tsunamis, it also reveals information on the Earth's composition and features in much the same way as it led to the discovery of Mohorovicic's discontinuity. As our theoretical understanding of the physics behind seismic waves has grown, physical and numerical modeling have greatly advanced and now augment applied seismology for better prediction and engineering practices. This has led to some novel applications such as using artificially-induced shocks for exploration of the Earth's subsurface and seismic stimulation for increasing the productivity of oil wells. This book demonstrates the latest techniques and advances in seismic wave analysis from theoretical approach, data acquisition and interpretation, to analyses and numerical simulations, as well as research applications. A review process was conducted in cooperation with sincere support by Drs. Hiroshi Takenaka, Yoshio Murai, Jun Matsushima, and Genti Toyokuni.

Seismic waves. --- Waves, Seismic --- Elastic waves --- Volcanology & seismology

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Ultrasonic waves are well-known for their broad range of applications. They can be employed in various fields of knowledge such as medicine, engineering, physics, biology, materials etc. A characteristic presented in all applications is the simplicity of the instrumentation involved, even knowing that the methods are mostly very complex, sometimes requiring analytical and numerical developments. This book presents a number of state-of-the-art applications of ultrasonic waves, developed by the main researchers in their scientific fields from all around the world. Phased array modelling, ultrasonic thrusters, positioning systems, tomography, projection, gas hydrate bearing sediments and Doppler Velocimetry are some of the topics discussed, which, together with materials characterization, mining, corrosion, and gas removal by ultrasonic techniques, form an exciting set of updated knowledge. Theoretical advances on ultrasonic waves analysis are presented in every chapter, especially in those about modelling the generation and propagation of waves, and the influence of Goldberg's number on approximation for finite amplitude acoustic waves. Readers will find this book ta valuable source of information where authors describe their works in a clear way, basing them on relevant bibliographic references and actual challenges of their field of study.

Ultrasonic waves. --- Supersonic waves --- Waves, Ultrasonic --- Sound-waves --- Ultrasonics --- Acoustic & sound engineering

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A guide to ocean waves traces their evolution from wind-wave generation to coastal effects.

Water waves. --- Ocean waves. --- Wave mechanics. --- Electrodynamics --- Matrix mechanics --- Mechanics --- Molecular dynamics --- Quantum statistics --- Quantum theory --- Waves --- Breakers --- Sea waves --- Surf --- Swell --- Oceanography --- Water waves --- Surface waves (Water) --- Hydrodynamics --- Wind waves --- Ocean waves --- Wave mechanics

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Features practical application of theories and demonstrates calculations using real-life examplesUltrasonic testing is a relatively new branch of science and industry. Its testing methodologies are particularly useful for high-risk working environments, such as a nuclear power plant. Without knowing the nuances of the ultrasonic wave propagation in a test object, it is impossible to design effective inspection techniques and search units for its realization.Based on the author's broad ultrasonic nondestructive testing (NDT) experience, this book addresses the theoretical differences of ultrasonics from other wave propagation theories, presenting not only the basics of physics in the wave propagation and elementary mathematics, but also advanced, practical applications. Each chapter represents unique structural characteristics, and nondestructive testing and calculation methods are offered accordingly.The book begins with overviews of NDT methods and the principals of search unit design and, particularly, probes for an automated inspection. Next, it covers probe designs such as single angle beam, dual straight and angle beam, and multi-crystal, as well as designs for TOFD technique application and for inspecting several types of cylindrical rods. The next chapters address technique development and probe design for inspection of thin hollow cylinders by Lamb-type guided waves; probe design for immersion method inspection; and probe design and techniques for reactor pressure vessel and nozzle inner radius inspection. Both contact and immersion techniques are discussed, and ample practical examples and problem-solving methods are included.This practical reference gives NDT specialists, engineers, and technicians, as well as material/structural and nuclear plant engineers, the fundamentals they need for everyday activity in ultrasonic technology and search unit design and application.

Ultrasonic testing. --- Ultrasonic waves --- Industrial applications.