Uniaxial compression test on ceramic green compact with bending consideration using digital image correlation

Autor(es)

de Melo, Caiua Caldeira ^[1] ; Furlan, Matheus ^[2] ; Hild, Francois ^[3] ; Schmitt, Nicolas ^[3] ; Canto, Rodrigo Bresciani ^{[2, 1]}

Afiliação do(s) autor(es)

^[1] Fed Univ Sao Carlos UFSCar, Grad Program Mat Sci & Engn, PPGCEM, BR-13565905 Sao Carlos, SP - Brazil

^[2] Fed Univ Sao Carlos UFSCar, Dept Mat Engn DEMa, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Paris Saclay, ENS Paris Saclay, CNRS, LMT Lab Mecan & Technol, 4 Ave Sci, F-91190 Gif Sur Yvette - France

• Tipo de documento: Artigo Científico
• Fonte: Powder Technology; v. 376, p. 136-148, OCT 2020.
• Citações Web of Science: 0

Resumo

A uniaxial compression test was performed on a green compacted alumina powder. Using Digital Image Correlation (DIC), displacement fields of two perpendicular surfaces of the specimen were measured showing unavoidable bending effect. A constitutive model was calibrated through three Finite Element Model Updating approaches. First, an analysis was performed using average axial strains assessed via DIC and resultant forces to identify the constitutive model. Then, a plane stress analysis was conducted out using the displacements of the boundaries of the regions of interest for each camera separately to obtain the sought parameters. Last, a 3D analysis was carried out using the multi-point constraint method to link displacement fields of both surfaces. Because of bending, the first two approaches give rise to two sets of different parameters. The analysis that considers the 3D nature of bending leads to the set of parameters with the highest degree of confidence. (C) 2020 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 18/02801-4 - Identificação de modelos de material para a simulação computacional da prensagem de pós
• Beneficiário: Rodrigo Bresciani Canto
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/15266-0 - Detecção e quantificação de mecanismos de fratura de cerâmicas em temperatura ambiente e elevada via correlação de imagens digitais
• Beneficiário: Rodrigo Bresciani Canto
• Linha de fomento: Auxílio à Pesquisa - Regular