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J. Imaging 2018, 4(3), 48;

Energy-Resolved Neutron Imaging for Reconstruction of Strain Introduced by Cold Working

Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
STFC-Rutherford Appleton Laboratory, ISIS Facility, Harwell OX11 0QX, UK
Australian Nuclear Science and Technology Organisation (ANSTO), Kirrawee, NSW 2232, Australia
Centre for Manufacturing and Materials Engineering, Coventry University, Coventry CV1 5FB, UK
Author to whom correspondence should be addressed.
Received: 9 December 2017 / Revised: 22 February 2018 / Accepted: 23 February 2018 / Published: 28 February 2018
(This article belongs to the Special Issue Neutron Imaging)
PDF [5923 KB, uploaded 28 February 2018]


Energy-resolved neutron transmission imaging is used to reconstruct maps of residual strains in drilled and cold-expanded holes in 5-mm and 6.4-mm-thick aluminum plates. The possibility of measuring the positions of Bragg edges in the transmission spectrum in each 55 × 55 µm2 pixel is utilized in the reconstruction of the strain distribution within the entire imaged area of the sample, all from a single measurement. Although the reconstructed strain is averaged through the sample thickness, this technique reveals strain asymmetries within the sample and thus provides information complementary to other well-established non-destructive testing methods. View Full-Text
Keywords: Bragg edge imaging; residual strain; neutron transmission Bragg edge imaging; residual strain; neutron transmission

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Tremsin, A.S.; Kockelmann, W.; Kelleher, J.F.; Paradowska, A.M.; Ramadhan, R.S.; Fitzpatrick, M.E. Energy-Resolved Neutron Imaging for Reconstruction of Strain Introduced by Cold Working. J. Imaging 2018, 4, 48.

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