Shatalov, MYWallis, JRNicolaides, KE2009-03-092009-03-092005-06Shatalov, MY, Wallis, JR and Nicolaides, KE. 2005. Modelling and implementation of 1-3 piezocomposite side scan sonar array. Proceedings of the International Conference “Underwater Acoustic Measurements: Technologies &Results” Heraklion, Crete, Greece, 28th June – 1st July 2005, pp 6http://hdl.handle.net/10204/3175Proceedings of the International Conference “Underwater Acoustic Measurements: Technologies &Results” Heraklion, Crete, Greece, 28th June – 1st July 2005, pp 6A design and implementation of a 1-3 piezocomposite side scan transmit sonar array is considered. The theoretical approach to the array design is based on a new concept of one-dimensional modelling of 1-3 piezocomposite transducers, developed by the authors. This concept corresponds to the generalization of the Smith-Auld one-dimensional model and takes into consideration lateral motions of the piezoelectric pillars and polymer, which are supposed to be proportional to the strain in the axial direction. The main advance of the approach is that the electromechanical model is formulated in terms of variational approach. A new set of equivalent elastic, electrical and electromechanical constants of 1-3 piezocomposite is derived. Lamb modes of the 1-3 piezocomposites are investigated in term of the Certon-Patat membrane model by means of direct variational method application. The implementation of the array is proposed with generation of acoustic beam patterns at three different frequencies: 80 kHz, 300 kHz and 510 kHz. It is shown that the experimental data are in good agreement with the theoretical predictionsenTransducersSide scan sonarMulti-frequency array1-3 piezocompositeUnidimensional modelLateral vibrationsConference PresentationShatalov, M., Wallis, J., & Nicolaides, K. (2005). Modelling and implementation of 1-3 piezocomposite side scan sonar array. http://hdl.handle.net/10204/3175Shatalov, MY, JR Wallis, and KE Nicolaides. "Modelling and implementation of 1-3 piezocomposite side scan sonar array." (2005): http://hdl.handle.net/10204/3175Shatalov M, Wallis J, Nicolaides K, Modelling and implementation of 1-3 piezocomposite side scan sonar array; 2005. http://hdl.handle.net/10204/3175 .TY - Conference Presentation AU - Shatalov, MY AU - Wallis, JR AU - Nicolaides, KE AB - A design and implementation of a 1-3 piezocomposite side scan transmit sonar array is considered. The theoretical approach to the array design is based on a new concept of one-dimensional modelling of 1-3 piezocomposite transducers, developed by the authors. This concept corresponds to the generalization of the Smith-Auld one-dimensional model and takes into consideration lateral motions of the piezoelectric pillars and polymer, which are supposed to be proportional to the strain in the axial direction. The main advance of the approach is that the electromechanical model is formulated in terms of variational approach. A new set of equivalent elastic, electrical and electromechanical constants of 1-3 piezocomposite is derived. Lamb modes of the 1-3 piezocomposites are investigated in term of the Certon-Patat membrane model by means of direct variational method application. The implementation of the array is proposed with generation of acoustic beam patterns at three different frequencies: 80 kHz, 300 kHz and 510 kHz. It is shown that the experimental data are in good agreement with the theoretical predictions DA - 2005-06 DB - ResearchSpace DP - CSIR KW - Transducers KW - Side scan sonar KW - Multi-frequency array KW - 1-3 piezocomposite KW - Unidimensional model KW - Lateral vibrations LK - https://researchspace.csir.co.za PY - 2005 T1 - Modelling and implementation of 1-3 piezocomposite side scan sonar array TI - Modelling and implementation of 1-3 piezocomposite side scan sonar array UR - http://hdl.handle.net/10204/3175 ER -