Thermal history analysis on a hot surface using temperature indicating paints

Abstract

Temperature-sensitive paint (or) Temperature indicating paint (or) Thermal paint is a kind of coating to measure the temperature distribution (or) profile through its colour change. Thermal paint is considered to be one of the most efficient ways for temperature measurement. The analysis of these paints can be done through the observation of irreversible colour change with temperature. This paper describes the investigations done on the chemistry and behaviour of thermal paints with respect to temperature and time. The study also focuses on the calibration of thermal paints in both experimental and computational methods. In the experimental methods, the results hold in good agreement with K-type thermocouples as well as the computational results of ANSYS also provide similar results. The experimental thermal map of a butterfly specimen has been observed through the continuous exposure of thermal paint MC 350-8 to the continuous flame.

KEYWORDS:

• Temperature-sensitive paints
• temperature measurement
• thermocouples
• thermal map

Disclosure statement

No potential conflict of interest was reported by the author(s).