Immersion Apparatus for Ultrasonic Measurements

Abstract

An immersion apparatus for making ultrasonic measurements was constructed. The apparatus is used to measure longitudinal and shear sound speeds in polymeric materials as a function of temperature as well as sound absorption measurements. Polyhexamethylene adipamide, PMMA, polypropylene, polyoxymethylene, polyethylene, polystyrene, and Teflon were evaluated and the measurements were compared favorably with available literature values. Using the immersion apparatus, sound speed measurements are accurate to + or -2 percent while absorption measurements are accurate to + or -10 percent.

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Document Details

Document Type
Technical Report
Publication Date
Apr 14, 1972
Accession Number
AD0742775

Entities

People

  • Bruce Hartmann
  • Jacek Jarzynski

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Acoustic Propagation
  • Circuits
  • Dielectric Polymers
  • Frequency
  • Generators
  • Literature
  • Materials
  • Materials Laboratories
  • Measurement
  • Melting Point
  • Pulse Generators
  • Repetition Rate
  • Secondary Waves
  • Sound Waves
  • Temperature Gradients
  • Ultrasounds

Readers

  • Acoustical Oceanography.
  • Materials Science and Engineering.
  • Polymer Science and Technology