Abstract
In this study, a 2 kHz Tonpilz projector was designed using a Terfenol-D and modeled in ATILA. For the purpose of modeling studies, it has been determined that a radiating head mass exhibits better transmitting current response (TCR) at 136 mm diameter, where the resonance occurs at 2.4 kHz and the peak value of 118 dB re 1 μPa/A at 1 m occurs at 12 kHz. Also bolt at a 46 mm distance from the center of the head mass offers resonance at 2.4 kHz, and the peak value of 115.3 dB re 1 μPa/A at 1m occurs at 11.5 kHz. This optimized design is fabricated and molded with polyurethane of 3 mm thickness. The prototype was tested at the Acoustic Test Facility (ATF) of National Institute of Ocean Technology (NIOT) for its underwater performances. Based on the result, the fundamental resonance was determined to be 2.18 kHz and the peak value of TCR of 182 dB re 1 μPa/A at 1m occurs at 14 kHz. The maximum value of the RS was found to be −190 dB re 1V/μPa at 1m at a frequency of 2.1 kHz.
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R. Sathishkumar is presently a professor of Electronics and Communication Engineering, School of Electrical Sciences of KL University, India. He has involved in the Ocean Engineering research work regarding the design and optimization of Sonar systems. His activities are documented by an extensive publication record of scientific research articles, technical reports, and papers at international proceedings (over 30 publications stand June 2013). He was awarded as ‘Outstanding Scientist’ in 2012 by NFED, India. He received various prize awards for his overall research work and his scientific contributions to Signal and Image processing of sonar systems.
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Sathishkumar, R. 2 kHz high power smart transducer for acoustic sub-bottom profiling applications. J. Marine. Sci. Appl. 12, 361–365 (2013). https://doi.org/10.1007/s11804-013-1206-x
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DOI: https://doi.org/10.1007/s11804-013-1206-x