Elastic waves are used in fields as diverse as the non-destructive evaluation of materials, medicine, seismology and telecommunications. Elastic Waves in Solids 1 presents the different modes of propagation of elastic waves in increasingly complex media and structures. It first studies the propagation in an unlimited solid where only the material properties are taken into account. It then analyzes reflection and transmission phenomena at an interface with a fluid or a second solid. It explains the search for propagation modes on a free surface or at the interface between two media. Finally, it proposes a study of the dispersive propagation of elastic waves guided by a plate or a cylinder. This book is intended for students completing a master’s degree in acoustics, mechanics, geophysics or engineering, as well as teachers and researchers in these disciplines.

Elastic waves possess some remarkable properties and have become ever more important to applications in fields such as telecommunications (signal processing), medicine (echography), and metallurgy (non-destructive testing). These volumes serve as a bridge between basic books on wave phenomena and more technically oriented books on specific applications of wave phenomena. The first volume studies the different mechanisms of propagation in isotropic and anisotropic media. The second volume describes the generation and applications of free and guided waves.

While research on ultrasonics has been covered in earlier volumes of the Physical Acoustics series, Volumes 23 and 24 demonstrate the successful commercialization of devices and instruments arising from research in this area. These volumes will assist in the process of bringing research output into the marketplace to the benefit of customers.The chapters are liberally illustrated with pictures of actual commercial objects which have been or are in use. Included are Medical Ultrasonic Diagnostics, Nondestructive Testing (NDT), Acoustic Emission, Process Control, Surface Acoustic Wave (SAW) Devices, Frequency Control Devices, Research Instruments, Transducers, and Ultrasonic Microscopes. Also contained in the text are six essays covering technology transfer and commercialization.

Les propriétés remarquables de sondes élastiques : génération par source piézoélectrique localisées ou distribuées, propagation à l'intérieur ou à la surface de solides transparents ou opaques, vitesse cent mille fois inférieure à celle des ondes électromagnétiques, capacité à modifier les paramètres d'un faisceau lumineux, expliquent leur rôle essentiel dans le traitement des signaux électroniques et dans la saisie de grandeurs physiques. L'objectif de ce tome 2 est d'illustrer les fonctions exercées par les ondes libres et guidées étudiées dans le tome 1. Il comprend cinq chapitres qui traitent respectivement de la génération des ondes de volume par résonateurs piézoélectriques, la génération de sondes de surface à l'aide des électrodes interdigitées, l'interaction entre les ondes élastiques et les ondes lumineuses, les différentes structures des filtres acousto-électroniques, la description de capteurs, composants acousto-optiques et instruments. Ce livre est destiné aux étudiants des maîtrises et des diplômes d'études approfondies en acoustiques, mécaniques et traitement du signal, aux élèves des grandes écoles, aux enseignants, chercheurs et ingénieurs travaillant dans ces disciplines.