Neutron diffraction strain tomography: Demonstration and proof-of-concept.

Rev Sci Instrum

School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia.

Published: January 2020

Recently, a number of reconstruction algorithms have been presented for residual strain tomography from Bragg-edge neutron transmission measurements. In this paper, we examine whether strain tomography can also be achieved using diffraction instruments. We outline the proposed method and develop a suitable reconstruction algorithm. This technique is demonstrated in simulation, and a proof-of-concept experiment is carried out, where the strain field in an axisymmetric sample is reconstructed and validated using conventional diffraction strain scans.

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http://dx.doi.org/10.1063/1.5120422DOI Listing

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