Investigation of Structure/Fluid Interaction in Piping Systems Using an Intensity Measurement Approach.

Abstract

Methods for measuring both acoustic and vibrational power flow in piping systems are presented. A non-invasive dynamic pressure sensor for this application is hypothesized and a prototype based on polyvinylidene fluoride (PVDF) piesoelectric film strip is developed. Acoustic intensity measurements made in a straight pipe section indicate measurable interaction with the pipe wall along its length corresponding to acoustic column resonance mode shape. difficulties are encountered in implementing structural intensity measurements for verifying energy flow paths for this particular experimental configuration. PVDF strip prototype indicates excellent capabilities for noninvasive measurement of dynamic pressure inside pipe at low frequencies. Future investigations on a similar system with a 90 degree elbow are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1987
Accession Number
ADA183606

Entities

People

  • David W Taylor
  • G. P. Carroll

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Dynamic Pressure
  • Energy Transfer
  • Frequency
  • Intensity
  • Internal Pressure
  • Materials
  • Measurement
  • Piping Systems
  • Pressure Measurement
  • Pressure Transducers
  • Resonance
  • Resonant Frequency
  • Standing Wave Ratios
  • Standing Waves
  • Strain Gages
  • Transducers

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Materials Science and Engineering.
  • Optical Physics and Photonics.