Eventos Anais de eventos
ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
DETECTION OF CONTACT FAILURES IN LAMINATED COMPOSITES EMPLOYING A SINGLE DOMAIN FORMULATION, A SURROGATE RADIAL BASIS FUNCTION AND BAYESIAN INFERENCE
Submission Author:
Eiji Watanabe , RJ , Brazil
Co-Authors:
Eiji Watanabe , Fabricio Mascouto, Luiz A. S. Abreu, Diego Knupp
Presenter: Eiji Watanabe
doi://10.26678/ABCM.ENCIT2020.CIT20-0738
Abstract
This work deals with a heat conduction problem in a multi-layer media using a single domain formulation whose solution will be obtained from the application of a hybrid methodology which combines the classical integral transform technique and the finite difference method. The literature indicate that the approach of this problem via formulation in a single domain has high computational cost, thus, in order to reduce it, metamode-based methodologies, such as Radial Base Functions (RBF) will be applied. The single domain formulation advantage is mainly the possibility of analyzing problems with different numbers of layers with complex geometries with the simple modification of a coefficient with spatial variation. So as to illustrate the application of the methodology, the heat conduction problem within a multi-layer composite medium is considered, including the identification of a defect in the junction region, in which the adhesion of two different materials is imperfect. It is expected to identify adhesion failures by estimating a thermal conductivity with spatial variation throughout the region that contains adhesive and analyzing abrupt differences, which indicate possible contact failures. For this work, the whole problem will be solved using synthetic experimental data and with Bayesian Inference, considering also a surrogate radial basis function model.
Keywords
heat conduction, Laminated composites, Surrogate model, classical integral transform technique
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