Let us consider that we are using an underwater acoustic transducer Model 630 in an underwater AUV application. Usually in the data sheets, the manufacturer provides the details of operating frequency, input poser, operational depth, typical receive response, and transmit response. Suppose I want to calculate the typical receive and transmit responses, then what formula is to be used?
Such formula is relatively simple only in the case of a single vibrating piezoceramic plate with perfect circular shape and under the assumption that only thickness vibration is considered, and the results are measured on the symmetry axe. In typical transducers used for underwater applications it can be complicated and would require the knowledge about their construction and materials used. In complicated transducers (for example so called Langevin transducers) only quite sophisticated simulation can generate correct response, but not always very exact, since many elements cannot be perfectly defined (for example contact surfaces, glued elements).
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