Inverse Simulation of Fracture Parameters for Cement-Bonded Corundum Refractories

Calibration of cohesive parameters for a castable refractory using 4D tomographic data and realistic crack path from in-situ wedge splitting test

“…Pan et al [18] found the parameters of the (bilinear) CZM proposed by Alfano and Crisfield [19] using a nonlinear least-squares algorithm to minimize the difference between experimental and simulated loading curves. Doitrand et al.…”

On the calibration of cohesive parameters for refractories from notch opening displacements in wedge splitting tests

“…The same models may also be used to study interface cohesion in such heterogeneous materials [14,15,16]. More recently, several examples are found about its usage to simulate initiation and propagation of macrocracks [17,18,19,20,21,22].…”

“…For the quantity to be optimized with respect to experimental information, the crack mouth opening displacement (CMOD) [11,17] or elastic properties obtained from acoustic measurements [15,17] can be used. More recently, inverse algorithms were used to find the best fit of the loading curve [18,19]. Vargas et al [20] used measured CMODs to prescribe boundary conditions and used the force measurements in the cost function of a Finite Element Model Updating (FEMU) procedure, while Doitrand et al [21] also used force measurement and crack lengths estimates to find the best fit through manual optimization.…”