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Conference Paper/Proceeding/Abstract 470 views

Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem

Sathiskumar Jothi Orcid Logo

Swansea University Author: Sathiskumar Jothi Orcid Logo

Abstract

Under appreciation of aspects of the role of hydrogen plays in chemo-mechanics, such as hydrogen embrittlement of polycrystalline metals, has led the authors to propose a coupled microstructural and continuum critical dislocation site (CMCD) method. Determining the precise relationship between mecha...

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Published: Materials Science and Technology Conference and Exhibition 2013, MS&T , vol. 4 (2014) 2014
URI: https://cronfa.swan.ac.uk/Record/cronfa35154
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first_indexed 2017-09-07T03:57:07Z
last_indexed 2018-02-09T05:26:01Z
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spelling 2018-02-05T12:59:09.4349050 v2 35154 2017-09-06 Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem 6cd28300413d3e63178f0bf7e2130569 0000-0001-7328-1112 Sathiskumar Jothi Sathiskumar Jothi true false 2017-09-06 EEN Under appreciation of aspects of the role of hydrogen plays in chemo-mechanics, such as hydrogen embrittlement of polycrystalline metals, has led the authors to propose a coupled microstructural and continuum critical dislocation site (CMCD) method. Determining the precise relationship between mechanical stresses and the diffusion of hydrogen in the microstructure plays an important role in better understanding the chemo-mechanical problem for predicting the hydrogen embrittlement mechanism. The proposed work is aimed at developing such a model which replaces the macro domain at critical dislocation sites with a microstructural domain. This critical micro-scale region is coupled with the macro-scale domain. This space coupled model initially solves the mechanical problem which is coupled sequentially with the chemical problem by employing stress assisted hydrogen diffusion. The motivation of this testing investigation is to evaluate the CMCD model to bridge the gap between microstructural and continuum space scale for the chemo-mechanical problem. Conference Paper/Proceeding/Abstract Materials Science and Technology Conference and Exhibition 2013, MS&T , vol. 4 (2014) 31 12 2014 2014-12-31 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2018-02-05T12:59:09.4349050 2017-09-06T22:58:06.4033268 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Sathiskumar Jothi 0000-0001-7328-1112 1
title Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem
spellingShingle Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem
Sathiskumar Jothi
title_short Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem
title_full Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem
title_fullStr Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem
title_full_unstemmed Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem
title_sort Multiscale coupled microstructure and continuum critical dislocation site method for coupled chemomechanical hydrogen embrittlment problem
author_id_str_mv 6cd28300413d3e63178f0bf7e2130569
author_id_fullname_str_mv 6cd28300413d3e63178f0bf7e2130569_***_Sathiskumar Jothi
author Sathiskumar Jothi
author2 Sathiskumar Jothi
format Conference Paper/Proceeding/Abstract
publishDate 2014
institution Swansea University
publisher Materials Science and Technology Conference and Exhibition 2013, MS&T , vol. 4 (2014)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description Under appreciation of aspects of the role of hydrogen plays in chemo-mechanics, such as hydrogen embrittlement of polycrystalline metals, has led the authors to propose a coupled microstructural and continuum critical dislocation site (CMCD) method. Determining the precise relationship between mechanical stresses and the diffusion of hydrogen in the microstructure plays an important role in better understanding the chemo-mechanical problem for predicting the hydrogen embrittlement mechanism. The proposed work is aimed at developing such a model which replaces the macro domain at critical dislocation sites with a microstructural domain. This critical micro-scale region is coupled with the macro-scale domain. This space coupled model initially solves the mechanical problem which is coupled sequentially with the chemical problem by employing stress assisted hydrogen diffusion. The motivation of this testing investigation is to evaluate the CMCD model to bridge the gap between microstructural and continuum space scale for the chemo-mechanical problem.
published_date 2014-12-31T03:43:39Z
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score 11.035874

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