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

作者信息

Gregg A W T, Hendriks J N, Wensrich C M, Luzin V, Wills A

机构信息

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

Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Kirawee, NSW 2232, Australia.

出版信息

Rev Sci Instrum. 2020 Jan 1;91(1):015105. doi: 10.1063/1.5120422.

DOI:10.1063/1.5120422

PMID:32012601

Abstract

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.

摘要