New transducers for high-resolution ultrasonic testing

Weight, 1978, Observations of the propagation of very short ultrasonic pulses and their reflection by small targets, J Acoust Soc Am, 63, 396, 10.1121/1.381730 Hayman, 1979, Transmission and reception of short ultrasonic pulses by circular and square transducers, J Acoust Soc Am, 66, 945, 10.1121/1.383415 Weight, 1982, The propagation and reception of wide-band ultrasonic pulses Haselberg, 1959, Ein ultraschallstrahler fur die Werkstoffprufing mit verbesserten Nahfeld, Acustica, 9, 359 Stepanishen, 1971, Transient radiation from pistons in an infinite planae baffle, J Acoust Soc Am, 49, 1629, 10.1121/1.1912541 Robinson, 1974, Near field transient radiation patterns for circular pistons, IEEE Trans Acoust Speech Signal Processing, 395, 10.1109/TASSP.1974.1162612 Stepanishen, 1981, Acoustic transients from planar axisymmetric vibrators using the impulse response approach, J Acoust Soc Am, 70, 1176, 10.1121/1.386949 Harris, 1981, Transient field of a baffled planar piston having an arbitrary vibration amplitude distribution, J Acoust Soc Am, 70, 186, 10.1121/1.386671 Burckhardt, 1973, Ultrasound axicon: a device for focussing over a large depth, J Acoust Soc Am, 54, 1628, 10.1121/1.1914459 Burckhardt, 1975, Focussing ultrasound over a large depth with an annular transducer — an alternative method, IEEE Trans Sonics and Ultrasonics, 22, 11, 10.1109/T-SU.1975.30769 Foster, 1981, The conical scanner: a two transducer ultrasound scatter imaging technique, Ultrasonic imaging, 3, 62, 10.1016/0161-7346(81)90082-1 Weight, J.P. ‘Ultrasonic beam structure in fluid media’, submitted for publication in J Acoust Soc Am Weight, 1982