Imperial College London
Alternate

ProfessorFionnDunne

Faculty of Engineering, Department of Materials

Principal Research Fellow
 
 
 
//

Contact

 

+44 (0)20 7594 2884fionn.dunne

 
 
//

Location

 

104Royal School of MinesSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Erinosho:2018:10.1016/j.matdes.2018.04.071,
author = {Erinosho, TO and Collins, DM and Todd, RI and Wilkinson, AJ and Dunne, FPE},
doi = {10.1016/j.matdes.2018.04.071},
journal = {Materials and Design},
pages = {159--165},
title = {Statistical effects in X-ray diffraction lattice strain measurements of ferritic steel using crystal plasticity},
url = {http://dx.doi.org/10.1016/j.matdes.2018.04.071},
volume = {153},
year = {2018}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The influence of statistics on calculated lattice strains has been studied by comparing crystal plasticity finite element (CPFE) calculations with strains measured experimentally. Experimentally, when Bragg's law is obeyed, a plane normal must lie within a narrow orientation range (∼ 0.02° for synchrotron diffraction), or Bragg tolerance. However, CPFE models consider only a small number of grains compared to experiments, necessitating a justification of the statistically representative volume. It also becomes necessary to assess the threshold of Bragg tolerance allowable for the determined statistically representative volume. In this study, an 8×8×8 model was deemed as statistically representative such that only small benefits are obtained in terms of lattice strain calculations by adopting larger models such as 10×10×10. Based on the selected model, an allowable Bragg tolerance of approximately 5° was calculated. Also highlighted was the coupling between lattice strain, texture, hardening and applied boundary condition which are discriminators that will affect the choice of model size and Bragg tolerance threshold.
AU  - Erinosho,TO
AU  - Collins,DM
AU  - Todd,RI
AU  - Wilkinson,AJ
AU  - Dunne,FPE
DO  - 10.1016/j.matdes.2018.04.071
EP  - 165
PY  - 2018///
SN  - 0264-1275
SP  - 159
TI  - Statistical effects in X-ray diffraction lattice strain measurements of ferritic steel using crystal plasticity
T2  - Materials and Design
UR  - http://dx.doi.org/10.1016/j.matdes.2018.04.071
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000436433600017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/61998
VL  - 153
ER  -
Download