Henrique da Fonseca
PEM/COPPE/UFRJ – Department of Mechanical Engineering, Cid. Universitaria, Cx. Postal: 68503, Rio de Janeiro, RJ, 21941-972, Brazil
César C. Pacheco
Department of Mechanical Engineering, POLI/COPPE,
Federal University of Rio de Janeiro, Cid. Universitária, Cx. Postal 68503, Rio de Janeiro, 21941-972 Brazil
Helcio R. B. Orlande
Department of Mechanical Engineering, Politecnica/COPPE, Federal University of Rio de Janeiro - UFRJ, Caixa Postal: 68503, Cidade Universitaria, Rio de Janeiro, RJ, 21941-972, Brazil; Nanotechnology Eng. Program, COPPE, Federal University of Rio de Janeiro, Brazil
Olivier Fudym
CNRS Office for Brazil and the South Cone, Avenida Presidente Antônio Carlos, 58 / Sala 416, Rio de Janeiro 20020-010, Brazil
George S. Dulikravich
Department of Mechanical and Materials Engineering, Florida International University, 10555 West Flagler Street, EC 3462, Miami, Florida 33174, U.S.A
In this paper, we deal with the solution of an inverse problem involving the real-time identification of a position-dependent transient heat flux, imposed on the top surface of a thin plate by a laser diode. Infrared thermography measurements of the temperature of the plate, at the same surface where the heat flux is imposed, are used in the inverse analysis. The physical problem involves two-dimensional transient heat conduction in a plate with constant thermophysical properties, initially at a uniform temperature. A partial lumping across the plate's thickness is used for the mathematical formulation of the physical problem. We use the Steady State Kalman Filter (SSKF) for the solution of the inverse problem in real-time. The Steady State Kalman Filter results are compared to those obtained with the Classical Kalman Filter (CKF), in experiments where a laser diode at the 830 nm wavelength is used to heat the samples.