- A
- ablation regime, 155, 166
- acoustic
- admittance
- angular
- aperture, 14, 19
- wave number, 72
- antenna, 7, 15, 19
- attenuation by scattering, 100
- B, C
- backing, 107, 111, 115, 118, 124
- Bessel functions, 13, 64, 187
- bulk wave, 37
- center of
- expansion, 162
- generation, 152
- reflection, 152
- ceramic piezoelectric, 118
- circumferential wave, 71, 102
- coherent waves, 93, 95, 97, 100–102
- crystallographic axes, 109
- Curie principle, 61
- cylindrical
- D
- detuning parameter, 144, 150, 154
- differential scattering cross section, 63, 66, 67, 74, 75, 99
- diffraction
- frequency response, 22, 25
- impulse response, 20, 24, 26
- matrix, 196
- dipolar
- dipole of forces, 163
- directionality factor, 152, 153
- directivity factor, 13
- in thermoelastic regime, 165
- line source, 18, 39, 40
- rectangular source, 16
- divergence angle, 14
- E
- effective wave number, 99, 100
- electromechanical
- emission matrix, 35, 41, 196, 197
- equivalent circuit, 113, 115, 123, 136
- F
- Fabry-Pérot cavity, 172, 177
- far field, 13, 36
- focused transducer, 27
- Fraunhofer zone, 12
- Fresnel
- approximation, 25
- zone, 11
- G, H
- geometric regime, 61
- Green’s function, 3, 5, 38, 46, 160, 161, 196
- Hankel functions, 38, 64, 187
- head wave, 35, 52
- heterodyne interferometer, 174
- hexapole, 114, 139
- I, K
- impedance
- interdigital electrode transducer, 125, 134, 136, 140, 142
- Kirchhoff–Helmholtz (equation), 3
- M, N
- Maris factor, 44
- Mason (equivalent scheme), 115
- matching layer, 107
- Michelson interferometer, 172
- Minnaert resonance, 82
- mixed matrix, 32, 195
- monopolar
- multiple scattering, 92, 100, 102
- near field, 11, 26, 31, 32, 162, 166
- O, P
- orthogonality relation, 79, 192, 193
- piezoceramic, 107, 108
- piezocomposite, 109, 110, 118
- piston
- poynting vector, 65, 132, 133
- pseudo-surface acoustic wave, 125
- pump-probe technique, 166, 181
- Q, R
- quasi-crystalline approximation, 100
- radiation
- Rayleigh
- –Sommerfeld integral, 8
- distance, 31
- integral, 5, 21, 27
- scattering regime, 61
- wave, 35, 44, 52, 125–128, 135, 143, 166
- re-emission, 129, 139, 143, 145
- resonance frequency, 81
- resonant regime, 61
- S
- scattering
- by a cylinder, 65, 68
- by a sphere, 78, 85
- coefficients, 65, 66, 70, 71, 74, 78, 80–82, 84, 90, 99
- cross section, 61, 66, 83, 90
- matrix, 139, 140
- regimes, 61
- skin thickness, 156, 162
- spherical
- Bessel functions, 78, 191
- coordinates, 52, 77, 188
- Hankel functions, 55, 78, 191
- harmonics, 78, 188
- stationary phase method, 37, 98
- Stoneley wave, 92
- symmetry
- cubic, 36
- orthotropic, 34
- synchronism frequency, 126, 129, 131, 134, 138, 146
- T, V, Z
- tensor of seismic moment, 160
- thermoelastic
- transition
- triple-transit echo, 141, 143
- viscosity, 82
- ZGV Lamb modes, 179
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