Photostability Enhancement of Dual-Luminophore Pressure-Sensitive Paint by Adding Antioxidants

Uchida, Kazuki; Ozawa, Yuta; Asai, Keisuke; Nonomura, Taku

doi:10.3390/s22239470

Cited by 2 publications

(1 citation statement)

References 41 publications

(59 reference statements)

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“…This study showed that this alternative solution is more effective. In addition, the introduction of temperature-sensitive luminophore in fast PSPs usually causes severe photodegradation and non-uniformity due to the photochemical interaction between luminophores [27][28][29]. A possible solution is to physically separate two luminophores [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Dual-luminophore fast-responding pressure-sensitive paint for the simultaneous elimination of motion- and temperature-induced errors

Gu,

Wei,

Jiao

et al. 2024

Meas. Sci. Technol.

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Motion- and temperature-induced errors are the major sources of error in pressure-sensitive paint (PSP) measurement. In this study, we developed a novel dual-luminophore fast-responding PSP with reference and pressure-sensitive channels that have similar temperature sensitivities, enabling motion- and temperature-induced errors to be simultaneously eliminated by taking the intensity ratio of the two channels. Rhodamine B (RhB), which was loaded on the Mobil Composition of Matter No. 41 (MCM-41) molecular sieve, and platinum tetrakis(pentafluorophenyl) porphyrin (PtTFPP) were chosen as the reference and pressure-sensitive luminophores, respectively. These luminophores were mixed with mesoporous SiO2 particles and a small amount of polymer to form a sprayable motion–temperature cancellation (MTC) PSP. By controlling the concentration of RhB, the temperature sensitivity of the reference channel was adjusted to match that of PtTFPP. To minimize temperature-induced errors, the effect of spectral ranges was also investigated. The lowest temperature sensitivity achieved for the MTC-PSP was 0.025%/℃, yielding an extremely low temperature-induced error of 55 Pa/℃. Its pressure sensitivity and response time were 0.46%/kPa and 145 μs, respectively. In addition, a theoretical model for the MTC-PSP that considers the effect of spectral overlap was proposed. The model accurately predicted the nonlinear relationship between the intensity ratio and pressure. The capability of the MTC-PSP was confirmed in a fast-rotating-disk experiment, and the pressure results agreed well with the theoretical pressure distribution on the disk.

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Section: Introductionmentioning

confidence: 99%

Dual-luminophore fast-responding pressure-sensitive paint for the simultaneous elimination of motion- and temperature-induced errors

Gu,

Wei,

Jiao

et al. 2024

Meas. Sci. Technol.

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Dual-luminophore pressure-sensitive paint measurement using three-gate lifetime method with photodegradation correction

Uchida,

Nakakita,

Sugioka

et al. 2024

Review of Scientific Instruments

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In this paper, we propose a photodegradation correction method for the dual-luminophore pressure-sensitive paint (PSP) measurement using lifetime-based imaging, which was proposed for correction of the temperature-induced error but has suffered from photodegradation in the previous studies. We introduced a parameter that characterizes the photodegradation of a dual-luminophore PSP as the intensity ratio between the two luminophores. The changes in the calibration coefficients for the pressure and the temperature due to photodegradation were corrected based on this parameter. In this study, a coupon-based calibration test was performed, and the luminescence characteristics of the dual-luminophore PSP including photodegradation were investigated. Then, the proposed method was applied to a coupon-based validation test and a jet impingement test, and the effectiveness of the method was evaluated by comparing results with and without correction. The pressure measurement accuracy was significantly improved by photodegradation correction.

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Photostability Enhancement of Dual-Luminophore Pressure-Sensitive Paint by Adding Antioxidants

Cited by 2 publications

References 41 publications

Dual-luminophore fast-responding pressure-sensitive paint for the simultaneous elimination of motion- and temperature-induced errors

Dual-luminophore fast-responding pressure-sensitive paint for the simultaneous elimination of motion- and temperature-induced errors

Dual-luminophore pressure-sensitive paint measurement using three-gate lifetime method with photodegradation correction

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