Inverse heat transfer approach for IR image reconstruction: Application to thermal non-destructive evaluation

Inverse heat transfer approach for nondestructive estimation the size and depth of subsurface defects of CFRP composite using lock-in thermography

“…With respect to this regard, neural approach has been employed for defect detection in the analysis of thermographic images [13,14], and inverse heat transfer approaches constitute reliable techniques to determine thermal physical properties associated with the detected defects. Hanke [15] and Rodríguez and de Paulo Nicolau [16] have described to solve the inverse problem for the estimation of thermal conductivity and depth of hidden defects by the conjugate gradient method (CGM) of minimization procedure by infrared images reconstruction.…”

Convective heat transfer analysis in aggregates rotary drum reactor

“…Mass flow rates, aggregates/gases temperatures measurements and humidity contents of the aggregates are simultaneously acquired along the tumbler. The external temperature is measured by infrared thermography that is recognized as a promising technique in the non-destructive thermal analysis [16,17]. A physical model based on the heat balance is solved through the wall in order to reach the heat transfer coefficients inside the aggregates rotary drum reactor.…”

Pulsed Phase Thermography applied on complex structures: modelling and numerical analysis

“…The solution of the governing equations is carried out using the Finite Volume Method (FMV), which has been successfully used to investigate different parameters during the deployment of a thermal nondestructive testing by infrared thermography [5]. This method consists of the integration of space and time, over an elemental volume, the energy equation in the conservative form, which is equivalent to performing energy balances over all the elemental volumes.…”