Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
NUMERICAL ANALYSIS OF AN IN VITRO MODEL USING THE THERMAL IMPEDANCE METHOD
Submission Author:
Alexandre Miguel Costa Barcelos , MG
Co-Authors:
Alexandre Miguel Costa Barcelos, Gilmar Guimaraes, CLEUDMAR ARAÚJO, Gabriela Lima Menegaz
Presenter: Alexandre Miguel Costa Barcelos
doi://10.26678/ABCM.COBEM2019.COB2019-1802
Abstract
Breast cancer is the most common type of cancer in Brazilian women, which currently accounts for about 28% of new cases. In this work, a numerical analysis based on finite element method is used to study the detection of inclusions in a silicone model applying the thermal impedance method, defined as the ratio between the difference of temperature and heat flux measured on the upper surface of the model. Inclusion of a 10 mm diameter made of lactic polyacid (PLA) with an internal heat generated mimic the presence of a tumor. The detection of inclusions becomes possible due to the RMSD damage metric that is a statistical parameter capable of numerically representing the different measurements, without and with the presence of the inclusion. The numerical models simulated three difference inclusion depths (15 mm, 25 mm and 35 mm) and two different types of external heat flux applied on the whole surface and partially in the center area of the surface. The results showed that the inclusion was detected in the model by the thermal impedance method for both types of external heating. Furthermore, no significant difference in detection was observed due to the inclusion depth variation for the simulated conditions.
Keywords
Thermal Impedance, inclusion detection, Heat flux, Finite Element Method, silicone model
