Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
TECHNIQUE FOR THE SIMULTANEOUS ESTIMATION OF THERMAL PROPERTIES OF A COMPOSITE MATERIAL
Submission Author:
Luiz Augusto Pereira de Abreu , MG
Co-Authors:
Luiz Augusto Pereira de Abreu , Gabriel Vulcani, Mariana de Melo Antunes, Nícolas Pinheiro Ramos, Sandro Metrevelle Marcondes de Lima e Silva
Presenter: Mariana de Melo Antunes
doi://10.26678/ABCM.COBEM2023.COB2023-1763
Abstract
This article contributes to the simultaneous estimation of thermal properties in composite materials by presenting experimental techniques and comparing different inverse problem methods. Composite materials, which combine multiple materials, offer lighter and more durable alternatives compared to individual materials. Their unique properties can be tailored to meet specific needs, making them increasingly important worldwide. Understanding the thermal properties of materials is crucial in mechanical engineering for designing, analyzing, and optimizing electro-mechanical systems. However, finding accurate values for specific composite materials is challenging due to their varying compositions and limited literature data. Heat transfer is fundamental in engineering applications like engines, turbines, transformers, and power plants, where the use of composite materials is growing. Unfortunately, there is a lack of information on their thermal properties. This study presents a one-dimensional experimental approach using two inverse problem methods, Gauss Methods and Composite Least-Squares Method, to estimate the thermal conductivity and volumetric heat capacity of a composite piece made of epoxy resin and glass fiber reinforcement. The developed thermal model focuses on a onedimensional composite plate subjected to a nonlinear heat flux at the top surface while being insulated at the bottom and lateral surfaces.
Keywords
thermal conductivity, volumetric heat capacity, Composites, Gauss Method, Least-square method, Glass fiber
