Optical measurements of high-frequency pressure fluctuations using a pressure-sensitive paint and Cassegrain optics

Y. Sakamura, T. Suzuki, M. Matsumoto, G. Masuya, Y. Ikeda

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Optical measurements of high-frequency pressure fluctuations have been performed to examine the dynamic response of a fast-responding porous pressure-sensitive paint (PSP). The PSP was composed of meso-tetra(pentafluorophenyl) porphine and a commercial silica-gel thin-layer chromatography plate. Pressure fluctuations at frequencies on the order of kilohertz were produced on a flat plate by chopping an underexpanded air-jet and then measured by using a newly developed, optical pressure measurement system (OPMS) with a Cassegrain-type optical probe. Pressure traces obtained by the present OPMS and their amplitude spectra were compared with those obtained by a piezo-resistive pressure transducer. The present results demonstrate the feasibility of the present OPMS for measuring high-frequency pressure fluctuations with a high spatial resolution and reveal that the present porous PSP can follow pressure fluctuations at frequencies of several kilohertz at least.

Original languageEnglish
Pages (from-to)1591-1598
Number of pages8
JournalMeasurement Science and Technology
Volume13
Issue number10
DOIs
Publication statusPublished - 2002 Oct

Keywords

  • Air pressure
  • Calibration
  • Cassegrain optics
  • Non-intrusive sensing
  • Pressure-sensitive paint

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

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