Fracture energy evaluation of refractories in wedge splitting tests from notch opening displacements
| Autor: | R Vargas, Rodrigo Bresciani Canto, François Hild |
|---|---|
| Přispěvatelé: | Federal University of São Carlos (UFSCar), Laboratoire de mécanique et technologie (LMT), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay) |
| Rok vydání: | 2021 |
| Předmět: |
Refractory castable
Digital image correlation Materials science business.product_category Wedge Splitting Test (WST) 02 engineering and technology 01 natural sciences Displacement (vector) Work of Fracture [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] 0103 physical sciences Digital Image correlation (DIC) Materials Chemistry 010302 applied physics Fracture mechanics Quadratic function Mechanics 021001 nanoscience & nanotechnology Wedge (mechanical device) Finite element method Nonlinear system Ceramics and Composites Affine transformation 0210 nano-technology business Crack mouth opening displacement (CMOD) |
| Zdroj: | Journal of the European Ceramic Society Journal of the European Ceramic Society, Elsevier, 2021, 41 (10), pp.5367-5379. ⟨10.1016/j.jeurceramsoc.2021.02.055⟩ |
| ISSN: | 0955-2219 |
| Popis: | International audience; The work of fracture of refractories is commonly calculated from Crack Mouth Opening Displacements (CMODs) in Wedge Splitting Tests (WSTs). This paper proposes a methodology for estimating the fracture energy from Notch Opening Displacement (NOD) measurements, which is useful for setups where CMOD is not accessible. NODs and CMODs are calculated for both faces of two WSTs experiments on a castable refractory via Digital Image Correlation (DIC) and finite element simulations. A quadratic function fits well the non-linear CMOD vs. NOD behavior in the crack initiation regime, while an affine trend describes the propagation regime. Although the nonlinearity associated with crack initiation is more complex, the crack propagation energy can easily be estimated from NOD data when CMODs cannot be measured. |
| Databáze: | OpenAIRE |
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