Principal Component Analysis of Dual-luminophore Pressure/Temperature Sensitive Paints

Article type: Research Article

Authors: Carroll, B.F. | Hubner, J.P. | Schanze, K.S. | Bedlek-Anslow, J.M.

Affiliations: Department of Aerospace Engineering, Mechanics & Engineering Science, University of Florida, Gainesville, FL 32611-6250, U.S.A. | Department of Chemistry, University of Florida, Gainesville, FL 32611, U.S.A.

Abstract: Multi-luminophore pressure/temperature sensitive paints are investigated using principal component analysis of the spectral emission from the coatings. Two formulations are investigated. The first consists of Ru (4,7-diphenylphenanthroline) dichloride (Ruphen) and Coumarin-7 luminophores. The second coating contains Pt(II) meso-tetrakis (pentafluorophenyl) porphine (PtTFPP) and diethyloxadicarbocyanine iodide (DOCI). The principal component analysis revealed that the Ruphen/Coumarin-7 coating requires three fundamental spectra or modes to adequately model the coating emission characteristics. The PtTFPP/DOCI coating was modeled adequately with only two modes. Analysis of the PtTFFP/DOCI coating also revealed that a temperature independent calibration of the pressure sensing function could be developed. The requirement for a wind-off reference image was also eliminated.

Keywords: pressure sensor, temperature sensor, luminescent coating

Journal: Journal of Visualization, vol. 4, no. 2, pp. 121-129, 2001