Simultaneous Bayesian estimation of the temperature-dependent thermal properties of a metal slab using a three-dimensional transient experimental approach

Complementary transient thermal models and metaheuristics to simultaneously identify linearly temperature-dependent thermal properties of austenitic stainless steels

“…Researchers have already shown that this location can transmit sensitive temperature information [36,52]. In Reference [17], researchers utilized D-optimality-based sensitivity analysis considering experimental aspects to identify the most sensitive zones in the 3D geometry studied here. Sensor location for the 3D experiment was set at location (x=2.0 mm, y=2.0 mm, z=8.9 mm) based on this study.…”

“…Additionally, stochastic methods are less susceptible to the 'local minima trap', obtaining the best solution that can be possibly found after a given number of iterations. Such techniques have been successfully used to solve IHTPs [14][15][16][17] and are very relevant in solving engineering problems with complicated relationships between design variables [8].…”

“…This dispersion arises from the 1D thermal model used, leading to problems related to low thermal sensitivity when experimentally investigating metals. 3D formulations have been used to fit curves to entire temperature distribution data, as per Reference [17]. Although using 3D modeling for reaching higher sensitivity coefficients, the search space was restricted to values close to the optimal ones because Bayesian inference was used to infer thermal properties pointwise.…”

An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic Materials

“…On the other hand, growing technological requirements increasingly lead to the need for precise, reliable information about the properties of the processed material, which leads to the need to verify them in situ. The importance of the problem raised is confirmed by numerous publications [2][3][4][5][6][7][8][9][10][11], in which the issue of the possibly simplest and quickest way to determine material properties is considered, preferably several at once using one measurement station. The cited literature examples mainly concern attempts to determine thermal properties, that is, thermal diffusivity and volumetric heat capacity.…”

“…In the frequently used contact methods of providing thermal forcing, there are also significant problems with eliminating the influence of thermal resistances on connections [5]. In recent years, there has been promising information [6,7] about measurement techniques, allowing for the simultaneous determination of the temperature characteristics of specific heat and the specific thermal conductivity of metal samples with an accuracy of several percent. However, these techniques are based on the use of a resistive contact heat source, which makes them less useful in the case of higher temperatures encountered in metal processing thermal processes.…”