Characterization of boundary conditions during thermoplastic composite tape lay-up process using an inverse method

Abstract

The heat transfer coefficient during the thermoplastic composite tape lay-up process is estimated using an inverse method. This paper presents a simple inverse method using the parameter estimation technique combined with a suitable thermal transport model. The numerical simulation of the proposed thermal model is implemented by the finite element method. A small-scale tape lay-up system is built and experiments are conducted to measure temperature inside the composite during the process. The inverse method retrieves the unknown heat transfer coefficients by solving an optimization problem, which seeks consistency between the measured and computed temperatures.

Optimization of the laser-assisted tape winding process using an inverse kinematic-optical-thermal model

“…An inverse thermal model was developed to calculate the required heat fluxes to achieve a target temperature profile on the substrate surface for an LATP process with a flat tooling [24]. In another attempt for the tape lay-up process [25], the unknown heat transfer coefficients were determined by correlating the measured and predicted temperatures, which is known as inverse heat conduction problems (IHCPs). In [26], the laser power was adjusted in order to ensure a constant target temperature for an AFP process on a flat tooling using the proper generalized decomposition (PGD) method.…”

Gradient method for inverse heat conduction problem in nanoscale

“…Since in many thermal engineering situations boundary conditions are of great interest, especially when sensors are inaccessible, IHCP has been extensively investigated for various configurations [1,[3][4][5][6][7][8][9][10]. Most existing studies consider IHCP for a thick medium, that is, Fourier's law has been assumed in solving the corresponding direct problems.…”