Abstract
To obtain the time-response and the effect of temperature of the pressure sensitive paints(PSPs), the luminescence intensity of the PSPs is measured in the pressure and wall temperature range of 1∼101.3 kPa and 263∼303 K, respectively. The PSPs studied in the present works are PtOEP, PtTFPP, H2TFPP, H2TCPP, H2TSPP, and H2TTMAPP; they are painted on a commercially-available porous silica thin-layer chromatography (TLC) plate. The effect of the plate temperature on the pressure measurements is examined, and it is found that H2TFPP has the smallest temperature sensitivity of 3.5 kPa/K among the paints tested. The time-response of the paints is also investigated by using a shock tube. The change in luminescence caused by the sudden pressure rise due to an incident shock wave is detected by a photomultiplier. Results indicate that the response time is on the order of 20∼40 microseconds. In addition, the contact surface in the shock tube flow provides a method of checking the effect of the sudden change in gas temperature, and it is found that the luminescence intensity is insensitive to this effect.
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