Imperial College London
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DrEmilioMartinez-Paneda

Faculty of Engineering, Department of Civil and Environmental Engineering

Visiting Reader
 
 
 
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Contact

 

+44 (0)20 7594 8188e.martinez-paneda Website

 
 
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Location

 

249Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Martinez-Paneda:2016:10.1016/j.ijhydene.2016.05.014,
author = {Martinez-Paneda, E and del, Busto S and Niordson, CF and Betegon, C},
doi = {10.1016/j.ijhydene.2016.05.014},
journal = {International Journal of Hydrogen Energy},
pages = {10265--10274},
title = {Strain gradient plasticity modeling of hydrogen diffusion to the crack tip},
url = {http://dx.doi.org/10.1016/j.ijhydene.2016.05.014},
volume = {41},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In this work hydrogen diffusion towards the fracture process zone is examined accounting for local hardening due to geometrically necessary dislocations (GNDs) by means of strain gradient plasticity (SGP). Finite element computations are performed within the finite deformation theory to characterize the gradient-enhanced stress elevation and subsequent diffusion of hydrogen towards the crack tip. Results reveal that GNDs, absent in conventional plasticity predictions, play a fundamental role on hydrogen transport ahead of a crack. SGP estimations provide a good agreement with experimental measurements of crack tip deformation and high levels of lattice hydrogen concentration are predicted within microns to the crack tip. The important implications of the results in the understanding of hydrogen embrittlement mechanisms are thoroughly discussed.
AU  - Martinez-Paneda,E
AU  - del,Busto S
AU  - Niordson,CF
AU  - Betegon,C
DO  - 10.1016/j.ijhydene.2016.05.014
EP  - 10274
PY  - 2016///
SN  - 0360-3199
SP  - 10265
TI  - Strain gradient plasticity modeling of hydrogen diffusion to the crack tip
T2  - International Journal of Hydrogen Energy
UR  - http://dx.doi.org/10.1016/j.ijhydene.2016.05.014
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000379106200019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/73411
VL  - 41
ER  -
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