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A discrete crack dynamics model of toughening in brittle polycrystalline material by crack deflection
File | Description | Size | Format | |
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EFM_2018_1157_Revised_Accepted.pdf | Accepted version | 3.1 MB | Adobe PDF | View/Open |
Title: | A discrete crack dynamics model of toughening in brittle polycrystalline material by crack deflection |
Authors: | Ebrahimi, M Balint, D Sutton, A Dini, D |
Item Type: | Journal Article |
Abstract: | This paper focuses on the study of the effect of the interfacial strength of grain boundaries and elliptical inclusions on crack path deflection. The method is developed to channel a crack into a toughening configuration (arrays of elliptical holes and inclusions are considered) in order to obtain the optimised microstructure required to enhance fracture toughness through different mechanisms. The proposed technique is shown to reproduce experimental crack propagation paths in various configurations and is capable of capturing the effect of that variation of the GB and the inclusion interfacial strength; it provides a powerful tool to understand the interplay between microstructural features and improve materials performance. |
Issue Date: | 1-Jun-2019 |
Date of Acceptance: | 11-Mar-2019 |
URI: | http://hdl.handle.net/10044/1/67675 |
DOI: | https://dx.doi.org/10.1016/j.engfracmech.2019.03.013 |
ISSN: | 0013-7944 |
Publisher: | Elsevier |
Start Page: | 95 |
End Page: | 111 |
Journal / Book Title: | Engineering Fracture Mechanics |
Volume: | 214 |
Copyright Statement: | © 2019 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/ |
Sponsor/Funder: | Element Six Limited Engineering & Physical Science Research Council (EPSRC) Engineering and Physical Sciences Research Council |
Funder's Grant Number: | P/O 19971 EP/N025954/1 EP/L015579/1 |
Keywords: | Science & Technology Technology Mechanics Interfacial energy Grain boundary Discrete Crack Dynamics FINITE-ELEMENT-METHOD GRAIN-BOUNDARIES GROWTH FATIGUE PROPAGATION FRACTURE INCLUSIONS MATRIX MD Multidisciplinary Mechanical Engineering & Transports |
Publication Status: | Published |
Online Publication Date: | 2019-03-26 |
Appears in Collections: | Condensed Matter Theory Mechanical Engineering Physics Faculty of Natural Sciences Faculty of Engineering |