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)

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

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
56660	1	SAFE - a Systems Approach For Engineered Barriers	Peter Grassl	Engineering & Physical Sciences Research Council (EPSRC)	EP/I036427/1	ENG - ENGINEERING INFRASTRUCTURE & ENVIR