Design and construction of a low frequency wide band non-resonant transducer.
作者： J.M. Allin , P. Cawley
DOI: 10.1016/S0041-624X(03)00102-1
关键词:
摘要: Commercially available low frequency transducers often have a bandwidth of much less than 100%. This paper reviews the current technology for transducer construction and presents non-resonant design giving an improved performance. Small, undamped piezo-electric cubic elements 2 mm side length are used which operate below their first resonance frequency. In construction, air-backed front faces bonded to thin membrane across end enclosure 15 diameter. Using excitation signal has little energy at elements, operating range 200-500 kHz can be achieved. A single element behaves virtually as point source, but by arranging array over membrane, more collimated beam profile is obtained.
elsevier.com
sci-hub.se 参考文章(24)
Bruce Drinkwater, Peter Cawley, An Ultrasonic Wheel Probe Alternative to Liquid Coupling Insight. ,vol. 36, pp. 983- 989 ,(1995) , 10.1007/978-1-4615-1987-4_124
Bruce W Drinkwater, P Cawley, The practical application of solid coupled ultrasonic transducers Materials evaluation. ,vol. 55, pp. 2041- 2044 ,(1996)
JM Allin, P Cawley, MJS Lowe, A robust technique for disbond detection in the automotive industry AIP Conference Proceedings. ,vol. 615, pp. 1172- 1179 ,(2002) , 10.1063/1.1472927
P. Reynolds, J. Hyslop, G. Hayward, The influence of constructional parameters on the practical performance of 1-3 piezocomposite transducers internaltional ultrasonics symposium. ,vol. 2, pp. 967- 970 ,(1996) , 10.1109/ULTSYM.1996.584152
F. Livingstone, Review of progress in quantitative NDE NDT International. ,vol. 21, pp. 98- 99 ,(1988) , 10.1016/0308-9126(88)90437-3
Ningqun Guo, Peter Cawley, Measurement and prediction of the frequency spectrum of piezoelectric disks by modal analysis Journal of the Acoustical Society of America. ,vol. 92, pp. 3379- 3388 ,(1992) , 10.1121/1.404188
Richard H. Brown, Piezo film: Form and function Sensors and Actuators A-physical. ,vol. 22, pp. 729- 733 ,(1990) , 10.1016/0924-4247(89)80067-6
G. Hayward, C. J. MacLeod, T. S. Durrani, A systems model of the thickness mode piezoelectric transducer The Journal of the Acoustical Society of America. ,vol. 76, pp. 369- 382 ,(1984) , 10.1121/1.391138
P.D. Wilcox, R.S.C. Monkhouse, P. Cawley, M.J.S. Lowe, B.A. Auld, Development of a computer model for an ultrasonic polymer film transducer system Ndt & E International. ,vol. 31, pp. 51- 64 ,(1998) , 10.1016/S0963-8695(97)00006-6
Martin Greenspan, The NBS conical transducer: Analysis Journal of the Acoustical Society of America. ,vol. 81, pp. 173- 183 ,(1987) , 10.1121/1.395027