Fracture analysis of refractories at high temperatures via numerical simulation and digital image correlation

• Grant number: 20/08077-6
• Support Opportunities: Regular Research Grants
• Start date: June 01, 2021
• End date: November 30, 2023
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal Investigator: Rodrigo Bresciani Canto
• Grantee: Rodrigo Bresciani Canto
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated researchers: François Hild ; Ricardo Afonso Angélico ; Vinicius Fiocco Sciuti

Abstract

Numerical simulations are an essential tool for material selection and predicting the viability and lifetime of refractories that are usually utilized in high temperature environments. However, the satisfactory modeling of such materials requires parameters that describe the thermomechanical behavior for in-service conditions. This project aims to develop tools to allow for the acquisition and processing of images obtained up to 1400 Celsius along two routes, namely, experimental and numerical. These two directions are complementary and the objective (and practice) of the research group is not to dissociate them. On the experimental side, a furnace to be coupled with a universal testing machine will be developed, with windows for image acquisition to enable for Digital Image Correlation analyses. Among the project challenges, defining the filters and illumination to handle black body radiations at temperatures greater than 800 Celsius, the materials required for mounting such setup on the testing machine, and the patterning of the sample to withstand high temperatures are highlighted. On the numerical side, treating images via digital image correlation to deal with heat-haze effects and possible changes in the sample color will be needed and demands high computational performances. Besides, parameter identification will be conducted via finite element model updating, in a way that the simulation of the fracture process, in the commercial FE code Abaqus, would be faithful to the underlying physical mechanisms. Allying the experimentally measured displacement fields to numerical simulations will allow for a better understanding and prediction of refractory fracture under very high temperatures. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VARGAS, R.; CANTO, R. B.; SMANIOTTO, B.; HILD, F.. Calibration of cohesive parameters for a castable refractory using 4D tomographic data and realistic crack path from in-situ wedge splitting test. Journal of the European Ceramic Society, v. 43, n. 2, p. 16-pg., 2023-02-01. (18/23081-0, 21/09238-6, 20/08077-6)

FABRIS, DEBORA CRISTINA NIERO; MIGUEL, ENZO HENRIQUE; VARGAS, RAFAEL; CANTO, RODRIGO BRESCIANI; VILLAS-BOAS, MARIANA DE OLIVEIRA CARLOS; PEITL, OSCAR; SGLAVO, VINCENZO M.; ZANOTTO, EDGAR DUTRA. Microstructure, residual stresses, and mechanical performance of surface crystallized translucent glass-ceramics. Journal of the European Ceramic Society, v. 42, n. 11, p. 12-pg., 2022-05-18. (13/07793-6, 19/12417-0, 18/23081-0, 20/08077-6)

VARGAS, R.; CANTO, R. B.; HILD, F.. Cohesive properties of refractory castable at 600 degrees C: Effect of sintering and testing temperature. Journal of the European Ceramic Society, v. 42, n. 14, p. 17-pg., 2022-08-13. (18/15266-0, 20/08077-6, 18/23081-0, 21/09238-6)