Formulation of pressure sensitive paints for unsteady measurements

Author

Soumagne-Schweyckart, I. ; Mérienne, M.C. ; Ancelle, J.

Author_Institution

ONERA, Chatillon, France

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

17

Lastpage

24

Abstract

One of the main part of Pressure Sensitive Paint (PSP) activity at Onera is devoted to the application of this technique to unsteady measurements. In order to reduce the response time to a few milliseconds, new paints have been developed. The coating we have developed consists of a pyrene derivative covalently linked to silica particles. The grafted silica is mixed with a water soluble alumina and can be sprayed with an airbrush. This paint emits fluorescence when it is excited at 340 nm and its pressure sensitivity is around 90%/bar. An aging test that consists in heating the coating at 60°C at a pressure of 200 mbar for one hour results in no decrease of the emitted intensity. The response time of this paint, defined as the time required to reach 99% of the maximum intensity level, is less than 5 ms

Keywords

ageing; calibration; coatings; fluorescence; intelligent materials; optical films; optical sensors; organic compounds; phosphors; pressure measurement; wind tunnels; 200 mbar; 340 nm; 340nm; 5 ms; 60 C; 60 degrees C; 90% of maximum intensity; Onera; SiO₂; aging test; coating; exposure time one hour; fluorescence; grafted silica; heating; luminescent pressure sensor; paint; pressure 200mbar; pyrene derivative; pyrene molecule; response time 5ms; unsteady measurements; Aging; Coatings; Delay; Fluorescence; Heating; Paints; Pressure measurement; Silicon compounds; Spraying; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation in Aerospace Simulation Facilities, 2001. 19th International Congress on ICIASF 2001

Conference_Location

Cleveland, OH

Print_ISBN

0-7803-7022-8

Type

conf

DOI

10.1109/ICIASF.2001.960232

Filename

960232