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Licensed Unlicensed Requires Authentication Published by De Gruyter May 31, 2013

Neutron strain tomography using Bragg-edge transmission

  • Brian Abbey , Shu Yan Zhang , Mengyin Xie , Xu Song and Alexander M. Korsunsky


Predicting the fatigue lifetime of components relies on a knowledge of the residual elastic strain present throughout the bulk of the material. Non-destructively mapping the complete strain distribution throughout large volumes presents significant practical challenges. Recently a technique known as Bragg-edge neutron transmission has been developed as a means of non-destructive bulk elastic strain evaluation. Whilst conventional radiography measures the integral absorption, Bragg-edge neutron transmission probes the average strain along the incident beam direction. A “strain radiogram” is thus a two-dimensional average projection of the strain within the sample. Here we demonstrate how strain radiograms can be used for “neutron strain tomography” and we present and contrast two different approaches to the problem of characterising spatially resolved elastic strains.

* Correspondence address Dr. Brian Abbey, ARC Centre of Excellence for Coherent X-ray Science School of Physics, The University of Melbourne, Parkville, Victoria 3010, Australia, Tel.: +3 834 47541, Fax: +3 9347 8912, E-mail:


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Received: 2011-7-17
Accepted: 2011-11-20
Published Online: 2013-05-31
Published in Print: 2012-02-01

© 2012, Carl Hanser Verlag, München

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