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Optimising parameters for meaningful measurement of residual strain by neutron diffraction in self-pierce riveted joints
Journal article   Peer reviewed

Optimising parameters for meaningful measurement of residual strain by neutron diffraction in self-pierce riveted joints

Rezwanul Haque, Y Durandet, Y C Wong, A Paradowska, J H Beynon and S Blacket
Science and Technology of Welding and Joining, Vol.18(6), pp.492-499
2013
DOI: https://doi.org/10.1179/1362171813Y.0000000126
url
https://doi.org/10.1179/1362171813Y.0000000126View
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Abstract

Engineering self-pierce rivet SPR neutron diffraction residual stress riveted joint gauge volume rivet die
The aim of this work is to examine the uncertainties involved in measuring residual strain and their dependence on both the gauge volume of the neutron beam and the acquisition time in self-pierce riveted (SPR) joints while using the neutron diffraction technique. The main challenge involved dealing with the very small dimensions of SPR joints and developing optimum instrument configuration that allowed faster and/or more accurate stress measurement in SPR while maintaining the same time resolution required for the millimetre scale of the problem. Two different gauge volumes were used (0.125 and 1.0 mm3), and two different measuring directions were chosen in order to examine the rotational accuracy of the sample table. All measurements were conducted in steel-steel joints. Even though small sizes were involved, meaningful results were obtained and measurement errors were reduced by optimising the instrument parameters.

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Domestic collaboration
Web Of Science research areas
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
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