banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Pressure-sensitive paint as a distributed optical microphone arraya)
a)A small portion of this work was presented in “Fluidic Oscillator as a Dynamic Calibration Tool,” at the 22nd AIAA Aerodynamic Measurement Technology & Ground Testing Conference, St. Louis, MO, June 2002.
Rent this article for


Image of FIG. 1.
FIG. 1.

Morphology of the polymer∕ceramic pressure-sensitive paint formulation.

Image of FIG. 2.
FIG. 2.

Dynamic calibration of polymer∕ceramic pressure-sensitive paint with a fluidic oscillator.

Image of FIG. 3.
FIG. 3.

Typical calibration of polymer∕ceramic pressure-sensitive paint over a range from vacuum to two atmospheres. Although the response is nonlinear over this broad range, it may be approximated by a linear fit over the small acoustic pressures about ambient conditions.

Image of FIG. 4.
FIG. 4.

Experimental setup of the cavity with pressure-sensitive paint.

Image of FIG. 5.
FIG. 5.

Analytical solution for the (1,1,0) mode shape in a rectangular cavity. , , , and . Pressure (Pa) is scaled to match the magnitude of experimental results.

Image of FIG. 6.
FIG. 6.

Pressure-sensitive paint data for the (1,1,0) mode shape at and . Pressure is expressed in Pascals.

Image of FIG. 7.
FIG. 7.

Pressure-sensitive paint data for the (1,1,0) mode shape at and . Three phase-averaged time steps are represented: (a) 0°, (b) 90°, and (c) 180°.

Image of FIG. 8.
FIG. 8.

Pressure time-history comparison between pressure-sensitive paint, Kulite pressure transducer measurements, and linear theory. PSP data were taken from one corner of the resonance cavity, and the Kulite transducer was also corner-mounted. Error bars on the PSP data indicate an average uncertainty of .

Image of FIG. 9.
FIG. 9.

Difference between Kulite transducer data and linear theory, compared with PSP difference from linear theory.

Image of FIG. 10.
FIG. 10.

Vertical cross section of the pressure-sensitive paint data at . The curves represent twelve time steps equally spaced throughout the period, and are sequentially numbered. The node is clearly visible at and exhibits very little motion.

Image of FIG. 11.
FIG. 11.

rms pressure data (Pa) as measured by pressure-sensitive paint for the (1,1,0) mode shape.


Generic image for table

Theoretical minimum-detectable-level of pressure-sensitive paint, with 100 images averaged.


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Pressure-sensitive paint as a distributed optical microphone arraya)