Accession Number : ADA301475

Title :   Naval Undersea Warfare Center Division Newport Technical Digest. Structural Acoustics,

Corporate Author : NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV RI

Personal Author(s) : Nadolink, Richard H. ; Lee, Ding ; Meng, James C. ; Nuttall, Albert H. ; Owsley, Norman L.

PDF Url : ADA301475

Report Date : JUN 1995

Pagination or Media Count : 115

Abstract : The theme of this issue of the Naval Undersea Warfare Center Division Newport's Technical Digest is structural acoustics and composite structures. Structural acoustics is that field of physics dealing with the propagation of time-wise varying motion in solid bodies and their interaction with acoustic media. The practical application of structural acoustics is in noise control. The problems in this area of engineering science are complex because, unlike acoustic fluids, there are two types of propagating waves in solids. Additional complexity is introduced by the geometric shape of the structures. For submerged structures, the fluid/structure interface requires additional conditions that must be imposed before a solution can be found. The subjects covered in this issue are radiation, scattering, self-noise, target physics, turbulent flow excitation, and composite structures. Composite materials are included because they play an important role in many marine structures. The topics are intended to be instructive and address the fundamental physical issues useful to the design of underwater vehicles. In addition to the theoretical articles presented, the Digest devotes a special section to selected test facilities operated by Division Newport and available to the scientific community. These test facilities explore/validate concepts, theories, and analyses developed at Division Newport and provide an essential link in the process that starts with an idea and ends with hardware. (MM)

Descriptors :   *UNDERWATER VEHICLES, *COMPOSITE MATERIALS, *UNDERSEA WARFARE, *COMPUTATIONAL FLUID DYNAMICS, *ACOUSTIC ATTENUATION, *NOISE REDUCTION, *UNDERWATER ACOUSTICS, VIBRATION, DEGRADATION, INTERFACES, POLYMERS, NAVY, ACOUSTIC WAVES, STIFFNESS, FIBER REINFORCED COMPOSITES, TURBULENT FLOW, COMPOSITE STRUCTURES, MATRIX MATERIALS, SHELLS(STRUCTURAL FORMS), WAVE PROPAGATION, CYLINDRICAL BODIES, GEOMETRIC FORMS, STRUCTURAL RESPONSE, MILITARY PUBLICATIONS, COMPRESSIVE STRENGTH, MARINE ENGINEERING, PLASTICS, SOUND PRESSURE, TEST FACILITIES, WIND TUNNELS, SHIP HULLS, ANECHOIC CHAMBERS, UNDERWATER STRUCTURES, FLUID FLOW, ACOUSTIC COATINGS.

Subject Categories : Laminates and Composite Materials
      Submarine Engineering
      Acoustics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE