Mesoscale analysis of failure in quasi-brittle materials: comparison between lattice model and acoustic emission data

Grégoire, D., Verdon, L., Lefort, V., Grassl, P., Saliba, J., Regoin, J.-P., Loukili, A. and Pijaudier-Cabot, G. (2015) Mesoscale analysis of failure in quasi-brittle materials: comparison between lattice model and acoustic emission data. International Journal for Numerical and Analytical Methods in Geomechanics, 39(15), pp. 1639-1664. (doi:10.1002/nag.2363)

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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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Grassl, Dr Peter
Authors: Grégoire, D., Verdon, L., Lefort, V., Grassl, P., Saliba, J., Regoin, J.-P., Loukili, A., and Pijaudier-Cabot, G.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:International Journal for Numerical and Analytical Methods in Geomechanics
Publisher:Wiley
ISSN:0363-9061
ISSN (Online):1096-9853
Copyright Holders:Copyright © 2015 The Authors
First Published:First published in International Journal for Numerical and Analytical Methods in Geomechanics 39(15): 1639-1664
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
566601SAFE - a Systems Approach For Engineered BarriersPeter GrasslEngineering & Physical Sciences Research Council (EPSRC)EP/I036427/1ENG - ENGINEERING INFRASTRUCTURE & ENVIR