The ef?cacy of sound to penetrate the seas made acoustic systems in the past c- tury the leading tools for sensing objects in and measuring properties of the seas. For over sixty years The United States Of?ce of Naval Research (ONR) has been a major sponsor of undersea research and development at universities, national laboratories, and industrial organizations. Appropriately ONR is the sponsor of this monograph series. The intent of the series is to summarize recent accomplishments in, and to outline perspectives for, underwater acoustics in speci?c ?elds of research. The general ?eld has escalated in importance and spread broadly with richness and depth of understanding. It has also, quite naturally, become more specialized. The goal of this series is to present monographs that critically review both past and recent accomplishments in order to address the shortcomings in present und- standing. In this way, these works will bridge the gaps in understanding among the specialists and favorably color the direction of new research and development. Each monograph is intended to be a stand-alone advanced contribution to the ?eld. We trust that the reader will also ?nd that each is a critical introduction to related specialized topics of interest as well.
Table of Content
Electroacoustic Transduction.- Transducers as Projectors.- Transducers as Hydrophones.- Projector Arrays.- Hydrophone Arrays.- Transducer Models.- Transducer Characteristics.- Nonlinear Mechanisms and Their Effects.- Acoustic Radiation from Transducers.- Advanced Acoustic Radiation Calculations.- Transducer Evaluation and Measurement.
About the author
Dr. Charles H. Sherman received the B. S. degree from the Massachusetts Institute of Technology and the M. S. and Ph. D degrees from the University of Connecticut. He worked mainly at the Navy Underwater Sound Laboratory in New London, CT, but also at Tracerlab, Inc. in Boston, MA, and Parke Mathematical Laboratories in Carlisle, MA, and now works at Image Acoustics, Inc. He has presented and published over thirty papers related to acoustics and transducers, and was elected Fellow of the Acoustical Society of America in 1974. He taught advanced acoustics at the University of Connecticut and transducers in the Ocean Engineering Department of the University of Rhode Island. He has over 40 years experience in underwater sound transducers and arrays.
Dr. John L. Butler is President and Chief Scientist at Image Acoustics, Inc. and has had over thirty five years of both practical and theoretical experience in the design and analysis of underwater sound transducers and arrays. He has worked for Harris Transducer (now Harris Acoustic Products Corporation), Parke Mathematical Laboratories, Massa Products Corporation and Raytheon Company, consulted to a number of underwater acoustics firms and the U. S. Navy, taught courses in acoustics, holds seventeen patents on transducers and has presented or published over thirty papers on electroacoustic transducers. In 1977 he was elected Fellow of the Acoustical Society of America. His education includes: Ph. D., Northeastern University, Boston, MA, and Sc. M., Brown University, Providence, RI.
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