Determination and mitigation of the uncertainty of neutron diffraction measurements of residual strain in large-grained polycrystalline material

Tom M Holden; Yeli Traore; Jon James; Joe Kelleher; P John Bouchard

doi:10.1107/S1600576715002757

Determination and mitigation of the uncertainty of neutron diffraction measurements of residual strain in large-grained polycrystalline material

J Appl Crystallogr. 2015 Mar 12;48(Pt 2):582-584. doi: 10.1107/S1600576715002757. eCollection 2015 Apr 1.

Authors

Tom M Holden¹, Yeli Traore¹, Jon James¹, Joe Kelleher¹, P John Bouchard¹

Affiliation

¹ Engineering and Innovation, The Open University , Walton Hall, Milton Keynes MK7 6AA, UK.

Abstract

For large-grained samples it is advantageous to perform pairs of neutron diffraction measurements at the same spatial location but rotated 180° around the geometric centre of the gauge volume as a means of minimizing the scatter coming from the random positioning of grains within the gauge volume.

Keywords: measurement uncertainty; neutron diffraction; polycrystalline materials; residual strain.