Beam Distortion in Doppler Ultrasound Flow Test Rigs: Measurement Using a String Phantom

Abstract

The tube in flow rigs used for testing Doppler ultrasound instruments can attenuate and distort the beam and sample volume by refraction, reflection, absorption and mode conversion. The attenuation and degree of distortion has been measured by using a moving string test object and candidate tubes have been compared. Tubes of rubber, TFE-Teflon, Perspex, heatshrink and C-Flex have been tested leading to the choice of O.8mm wall C-Flex.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA412354

Entities

People

  • P. J. Fish
  • R. Steel

Organizations

  • Bangor University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Abstracts
  • Blood
  • Blood Flow
  • Blood Vessels
  • Continuous Waves
  • Detectors
  • Distortion
  • Insertion Loss
  • Losses
  • Materials
  • Measurement
  • Thick Walls
  • Thin Walls
  • Ultrasounds
  • Walls
  • Waves

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Combustion and Flow Dynamics.
  • Optical Physics and Photonics.