The design of infrared non-destructive testing for investigation multi-layer materials

Abstract

-The inverse heat conduction in a multi-material slab with periodic temperature excitation is investigated. We derive a polynomial relation to estimate the frequency of the periodic excitation as a function of the temperature amplitude at a given observation point in the material specimen. The formula includes characteristic geometric and material parameters of the system. The polynomial formula can be an effective design tool for quick frequency predetermination in the design of non-destructive testing experiments with infrared thermography. The convergence and accuracy of the formula are assessed by comparison with analytical thermal quadrupoles solution.

Review on Conveyor Systems and Thermography

“…The tale of IR imaging has begun amid World War II [65]. Hence, this procedure has stretched out to different fields, like medication, support & maintenance, horticulture, mechanical, process industries, electrical, automobiles, gas detection, aerial survey, etc [66]. The essential wellspring of infrared radiation is heat or heat radiation.…”