Speaker
Description
A preliminary, purely numerical study is presented aimed at exploring the potential of a single-laser-spot thermography experiment for multi-parameter thermal characterization. The underlying idea is that localized continuous-wave laser excitation generates a temperature response whose different temporal regimes are governed by distinct physical mechanisms. In particular, the early transient following laser activation, the approach toward quasi-steady thermal conditions, and the subsequent relaxation after laser switch-off exhibit different dependencies on material thermal properties and heat-loss effects.
A three-dimensional finite-element heat transfer model is developed to simulate localized surface heating on a thin plate under realistic boundary conditions, including convective and radiative exchanges. Synthetic temperature fields 𝑇(𝑥,𝑦,𝑡) are generated and post-processed through representative observables typically available in infrared thermography measurements. The numerical results are used to qualitatively examine how different portions of the thermal response convey complementary information on thermal transport and energy storage phenomena, without prescribing a finalized measurement or inversion strategy at this stage.
This study provides preliminary numerical insights into the opportunities and limitations of single-test laser thermography for accessing multiple thermal descriptors within a single experiment. The results are intended to support the design of future experimental protocols and more detailed analyses, as well as potential extensions toward spatially resolved characterization of thermally affected regions.
