ATI's Mechanics of Underwater Noise course

Summary: The course describes the essential mechanisms of underwater noise as it relates to ship/submarine silencing applications. The fundamental principles of noise sources, water-borne and structure-borne noise propagation, and noise control methodologies are explained. Illustrative examples will be presented. The course will be geared to those desiring a basic understanding of underwater noise and ship/submarine silencing with necessary mathematics presented as gently as possible. A full set of notes will be given to participants as well as a copy of the text, Mechanics of Underwater Noise, by Donald Ross. Instructors: Joel Garrelick has extensive experience in the general area of structural acoustics and specifically, underwater acoustics applications. As a Principal Scientist for Cambridge Acoustical Associates, Inc., CAA/Anteon, Inc. and currently Applied Physical Sciences, Inc., he has thirty plus years experience working on various ship/submarine silencing R&D projects for Naval Sea Systems Command, the Applied Physics Laboratory of Johns Hopkins University, Office of Naval Research, Naval Surface Warfare Center and Naval Research Laboratory. He has also performed aircraft noise research for the Air Force Research Laboratory and NASA and is the author of a number of articles in technical journals. Joel received his B.C.E. and M.E. from the City College of New York and his Ph.D in Engineering Mechanics from the City University of New York. Paul Arveson served as a civilian employee of the Naval Surface Warfare Center (NSWC), Carderock Division. With a BS degree in Physics, he led teams in ship acoustic signature measurement and analysis, facility calibration, and characterization projects. He designed and constructed specialized analog and digital electronic measurement systems and their sensors and interfaces, including the system used to calibrate all the US Navy's ship noise measurement facilities. He managed development of the Target Strength Predictive Model for the Navy. He conducted experimental and theoretical studies of acoustic and oceanographic phenomena for the Office of Naval Research. He has published numerous technical reports and papers in these fields. In 1999 Arveson received a Master's degree in Computer Systems Management. He established the Balanced Scorecard Institute, as an effort to promote the use of this management concept among governmental and nonprofit organizations. He is active in various technical organizations, and is a Fellow in the Washington Academy of Sciences. Course Outline: Fundamentals. Definitions, units, sources, spectral and temporal properties, wave equation, radiation and propagation, reflection, absorption and scattering, structure-borne noise, interaction of sound and structures. Noise Sources in Marine Applications. Rotating and reciprocating machinery, pumps and fans, gears, piping systems. Noise Models for Design and Prediction. Source-path-receiver models, source characterization, structural response and vibration transmission, deterministic (FE) and statistical (SEA) analyses. Noise Control. Principles of machinery quieting, vibration isolation, structural damping, structural transmission loss, acoustic absorption, acoustic mufflers. Fluid Mechanics and Flow Induced Noise. Turbulent boundary layers, wakes, vortex shedding, cavity resonance, fluid-structure interactions, propeller noise mechanisms, cavitation noise. Hull Vibration and Radiation. Flexural and membrane modes of vibration, hull structure resonances, resonance avoidance, ribbed-plates, thin shells, anti-radiation coatings, bubble screens. Sonar Self Noise and Reduction. On board and towed arrays, noise models, noise control for habitability, sonar domes. Ship/Submarine Scattering. Rigid body and elastic scattering mechanisms, target strength of structural components, false targets, methods for echo reduction, anechoic coatings. Tuition: Tuition for this three-day course is $1450 per person at one of our scheduled public courses. Onsite pricing is available. Please call us at 410-956-8805 or send an email to ati@ATIcourses.com. Register Now Without Obligation