The Properties of Sound Propagation in Liquid Constrained Viscoelastic and Polymeric Structures.

Abstract

Detailed experiments were conducted to study the sound propagation in liquids contained by pipes constructed of polymeric materials. In the experiments, vertically aligned cylinders containing water were ensonified at one end by a piston-driven sound source. Approximately 60 dB sound attenuation was observed in pipes constructed of viscoelastic materials, the effect increasing with frequency and loss-tangent. Sound propagation in more rigid polymeric pipes exhibited similar characteristics to that of metallic pipes, in that negligible attenuation was observed. Keywords: Viscoelasticity; Sound wave propagation; Sound attenuation; Loss tangent; Polymeric materials; Random noise.

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Document Details

Document Type
Technical Report
Publication Date
Oct 09, 1987
Accession Number
ADA185944

Entities

People

  • M. P. Horne

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Waves
  • Amplifiers
  • Detectors
  • Diameters
  • Fluid Dynamics
  • Frequency
  • Generators
  • Materials
  • Military Research
  • Physical Properties
  • Pressure Distribution
  • Sound Pressure
  • Sound Waves
  • Wave Phenomena
  • Wave Propagation
  • Waves

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Fluid Dynamics.
  • Reinforced Composite Materials