05466nam 2200685 a 450 991014128390332120230801222739.01-5231-2337-01-119-94171-71-280-59268-097866136225181-119-94108-31-119-94107-5(CKB)2670000000180701(EBL)912163(OCoLC)775591917(SSID)ssj0000631624(PQKBManifestationID)11386420(PQKBTitleCode)TC0000631624(PQKBWorkID)10599385(PQKB)10088350(MiAaPQ)EBC912163(DLC) 2012005262(Au-PeEL)EBL912163(CaPaEBR)ebr10559400(CaONFJC)MIL362251(EXLCZ)99267000000018070120120202d2012 uy 0engur|n|---|||||txtccrAcoustical imaging[electronic resource] techniques and applications for engineers /Woon Siong GanChichester, West Sussex, U.K. Wiley20121 online resource (437 p.)Description based upon print version of record.0-470-66160-7 Includes bibliographical references and index.ACOUSTICAL IMAGING; Contents; About the Author; Foreword; 1 Introduction; References; 2 Physics of Acoustics and Acoustical Imaging; 2.1 Introduction; 2.2 Sound Propagation in Solids; 2.2.1 Derivation of Linear Wave Equation of Motion and its Solutions; 2.2.2 Symmetries in Linear Acoustic Wave Equations and the New Stress Field Equation; 2.3 Use of Gauge Potential Theory to Solve Acoustic Wave Equations; 2.4 Propagation of Finite Wave Amplitude Sound Wave in Solids; 2.4.1 Higher-Order Elasticity Theory; 2.4.2 Nonlinear Effects; 2.4.3 Derivation of the Nonlinear Acoustic Equation of Motion2.4.4 Solutions of the Higher-Order Acoustics Equations of Motion2.5 Nonlinear Effects Due to Energy Absorption; 2.5.1 Energy Absorption Due to Thermal Conductivity; 2.5.2 Energy Absorption Due to Dislocation; 2.6 Gauge Theory Formulation of Sound Propagation in Solids; 2.6.1 Introduction of a Covariant Derivative in the Infinitesimal Amplitude Sound Wave Equation; 2.6.2 Introduction of Covariant Derivative to the Large Amplitude Sound Wave Equation; References; 3 Signal Processing; 3.1 Mathematical Tools in Signal Processing and Image Processing; 3.1.1 Matrix Theory3.1.2 Some Properties of Matrices3.1.3 Fourier Transformation; 3.1.4 The Z-Transform; 3.2 Image Enhancement; 3.2.1 Spatial Low-Pass, High-Pass and Band-Pass Filtering; 3.2.2 Magnification and Interpolation (Zooming); 3.2.3 Replication; 3.2.4 Linear Interpolation; 3.2.5 Transform Operation; 3.3 Image Sampling and Quantization; 3.3.1 Sampling versus Replication; 3.3.2 Reconstruction of the Image from its Samples; 3.3.3 Nyquist Rate; 3.3.4 Sampling Theorem; 3.3.5 Examples of Application of Two-Dimensional Sampling Theory; 3.3.6 Sampling Theorem for Radom Fields3.3.7 Practical Limitation in Sampling and Reconstruction3.3.8 Image Quantization; 3.4 Stochastic Modelling of Images; 3.4.1 Autoregressive Models; 3.4.2 Properties of AR Models; 3.4.3 Moving Average Model; 3.5 Beamforming; 3.5.1 Principles of Beamforming; 3.5.2 Sonar Beamforming Requirements; 3.6 Finite-Element Method; 3.6.1 Introduction; 3.6.2 Applications; 3.7 Boundary Element Method; 3.7.1 Comparison to Other Methods; References; 4 Common Methodologies of Acoustical Imaging; 4.1 Introduction; 4.2 Tomography; 4.2.1 The Born Approximation; 4.2.2 The Rytov Approximation4.2.3 The Fourier Diffraction Theorem4.2.4 Reconstruction and Backpropagation Algorithm; 4.3 Holography; 4.3.1 Liquid Surface Method; 4.4 Pulse-Echo and Transmission Modes; 4.4.1 C-Scan Method; 4.4.2 B-Scan Method; 4.5 Acoustic Microscopy; References; 5 Time-Reversal Acoustics and Superresolution; 5.1 Introduction; 5.2 Theory of Time-Reversal Acoustics; 5.2.1 Time-Reversal Acoustics and Superresolution; 5.3 Application of TR to Medical Ultrasound Imaging; 5.4 Application of Time-Reversal Acoustics to Ultrasonic Nondestructive Testing5.4.1 Theory of Time-Reversal Acoustics for Liquid-Solid Interface"Acoustical Imaging starts with an introduction to the basic theories and principles of acoustics and acoustical imaging, then progresses to discuss its varied applications: nondestructive testing, medical imaging, underwater imaging and SONAR and geophysical exploration. The author draws together the different technologies, highlighting the similarities between topic areas and their common underlying theory. Some advanced topics are also described such as nonlinear acoustical imaging and its application in nondestructive testing, application of chaos theory to acoustical imaging, statistical treatment of acoustical imaging and negative refraction"--Provided by publisher.Acoustic imagingSound-wavesScatteringAcoustic imaging.Sound-wavesScattering.620.2/8TEC006000bisacshGan Woon Siong909749MiAaPQMiAaPQMiAaPQBOOK9910141283903321Acoustical imaging2177790UNINA