Neutron strain tomography using Bragg-edge transmission

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

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)234-241
Number of pages8
JournalInternational Journal of Materials Research
Volume103
Issue number2
DOIs
Publication statusPublished - Feb 2012
Externally publishedYes

Keywords

  • Neutron Bragg-edge transmission
  • Neutron tomography
  • Strain tomography

Fingerprint

Dive into the research topics of 'Neutron strain tomography using Bragg-edge transmission'. Together they form a unique fingerprint.

Cite this