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. View course sampler Instructors: David Feit retired from his position as Senior Research Scientist for Structural Acoustics at the Carderock Division, Naval Surface Warfare Center (NSWCCD) where he had worked since 1973. At NSWCCD, he was responsible for conducting research into the complex problems related to the reduction of ship vulnerability to acoustic detection. These involved theoretical and applied research on the causes, mechanisms, and means of reduction of submarine hull vibration and radiation, and echo reduction. Before that he worked at Cambridge Acoustical Associates where he and Miguel Junger co-authored the standard reference book on theoretical structural acoustics, Sound, Structures, and their Interaction. 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. Contact these instructors (please mention course name in the subject line) 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 $1795 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