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Type: Journal article
Title: Optimising parameters for meaningful measurement of residual strain by neutron diffraction in self-pierce riveted joints
Author: Haque, R.
Durandet, Y.
Wong, Y.
Paradowska, A.
Beynon, J.
Blacket, S.
Citation: Science and Technology of Welding and Joining, 2013; 18(6):492-499
Publisher: Maney Publishing
Issue Date: 2013
ISSN: 1362-1718
Statement of
R. Haque, Y. Durandet, Y.C. Wong, A. Paradowska, J.H. Beynon and S. Blacket
Abstract: 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.
Keywords: Residual stress
riveted joint
gauge volume
self-pierce rivet
neutron diffraction
Rights: © W.S. Maney & Son Ltd.
DOI: 10.1179/1362171813Y.0000000126
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Appears in Collections:Aurora harvest 4
Mechanical Engineering publications

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