title: Mesoscale analysis of failure in quasi-brittle materials: comparison between lattice model and acoustic emission data.
abstract: The purpose of this paper is to analyse the development and the evolution of the fracture process zone during fracture and damage in quasi-brittle materials. A model taking into account the material details at the mesoscale is used to describe the failure process at the scale of the heterogeneities. This model is used to compute histograms of the relative distances between damaged points. These numerical results are compared with experimental data, where the damage evolution is monitored using acoustic emissions. Histograms of the relative distances between damage events in the numerical calculations and acoustic events in the experiments exhibit good agreement. It is shown that the mesoscale model provides relevant information from the point of view of both global responses and the local failure process. © 2015 The Authors. International Journal for Numerical and Analytical Methods in Geomechanics published by John Wiley & Sons Ltd.
authors: Laboratoire des Fluides Complexes et leurs Réservoirs, LFC-R UMR5150 Université de Pau et des Pays de l'Adour Allée du Parc Montaury F64600 Anglet France.
authors: David
authors: D
authors: Grégoire
authors: Laboratoire des Fluides Complexes et leurs Réservoirs, LFC-R UMR5150 Université de Pau et des Pays de l'Adour Allée du Parc Montaury F64600 Anglet France.
authors: Laura
authors: L
authors: Verdon
authors: Laboratoire des Fluides Complexes et leurs Réservoirs, LFC-R UMR5150 Université de Pau et des Pays de l'Adour Allée du Parc Montaury F64600 Anglet France.
authors: Vincent
authors: V
authors: Lefort
authors: University of Glasgow Glasgow U.K.
authors: Peter
authors: P
authors: Grassl
authors: GeM - Institut de Recherche en génie civil et mécanique Ecole Centrale de Nantes Nantes France.
authors: Jacqueline
authors: J
authors: Saliba
authors: GeM - Institut de Recherche en génie civil et mécanique Ecole Centrale de Nantes Nantes France.
authors: Jean-Pierre
authors: JP
authors: Regoin
authors: GeM - Institut de Recherche en génie civil et mécanique Ecole Centrale de Nantes Nantes France.
authors: Ahmed
authors: A
authors: Loukili
authors: Laboratoire des Fluides Complexes et leurs Réservoirs, LFC-R UMR5150 Université de Pau et des Pays de l'Adour Allée du Parc Montaury F64600 Anglet France.
authors: Gilles
authors: G
authors: Pijaudier-Cabot
keywords: acoustic emission; damage; experimental; fracture process zone; mesoscopic model; quasi‐brittle materials