Description
Taylor & Francis Laser Ultrasonics Techniques and Applications 1990 Edition by C.B Scruby, L.E Drain
The first book devoted to laser techniques in the generation and reception of ultrasonic waves in materials, Laser Ultrasonics: Techniques and Applications provides a full description of the state of the art in all fields involving both lasers and ultrasonics. This practical book focuses mainly on the possible applications of the techniques, yet theory is discussed wherever necessary. After an introduction to ultrasonics and laser technology, the book reviews acousto-optics, various acousto-optic devices, and noninterferometric optical methods of measuring ultrasonic displacements. The authors then describe opto-acoustic techniques, discussing laser interferometry, including reference-beam, velocity, and Fabry-Perot systems, and their application to ultrasonic measurement on different surfaces. The authors also detail the generation of ultrasound as a consequence of the absorption of laser light in material. The book proceeds to discuss applications of laser-generated ultrasound, both by itself and in combination with laser interferometric reception to form an entirely remote and non-contact measurement and testing system. Comparisons with nonoptical techniques for ultrasonic generation and detection are made where appropriate. The book concludes with a discussion of the future developments and uses of laser techniques in ultrasonics, with particular reference to nondestructive testing. Table of contents :- INTRODUCTIONUltrasonicsLasersMain characteristics of laser lightLasers for ultrasonicsACOUSTO-OPTIC INTERACTIONSThe acousto-optic effectThe measurement of ultrasonic fieldsBragg diffractionAcousto-optic devicesApplications of acousto-optic devicesThe interaction of light with surface wavesLASER INTERFEROMETRYPrinciples of laser interferometryTheory of interference between light beamsReference beam interferometry with rough surfacesLight detection and signal amplificationEffects of laser mode structureSignal processingStabilized interferometersOptical frequency shiftingQuadrature interferometersLong path difference and interferometryFabry-Perot interferometersAPPLICATINOS OF LASER INTERFEROMETRY TO ULTRASONIC DISPLACEMENT MEASUREMENTThe measurement of acoustic fieldsScanned laser interferometryFull field visualisation of surface displacementThe measurement of surface wavesCalibration of transducersAcoustic emissionThe measurement of transverse and vector displacementSensitivity comparison with other ultrasonic detection techniquesULTRASONIC GENERATION BY LASERAbsorbtion of electromagnetic radiationTemperature distributionsThermoelastic stressesOther effectsConstrained surfacesUltrasonic wave propagation in unbounded solidsPropagation in bounded solidsRadiation patterns for laser-ultrasonic sourcesUltrasonic bulk waveforms in platesUltrasonic surface and guided wavesLasers for ultrasonic generationAPPLICATIONS USING LASER GENERATION OF ULTRASOUNDApplications to flaw detectionApplications to materials property measurementAPPLICATIONS TO ACOUSTIC MICROSCOPYCalibrationWave propagation studiesMedical applicationsCONCLUSIONS AND FUTURE PROSPECTS FOR LASER TECHNIQUES IN ULTRASONICSSummary and conclusionsFuture research and developmentFuture prospects for applicationsREFERENCESINDEX