Validation of Neutron Diffraction and the Incremental Deep Hole Drilling Residual Stress Measurements of a High Strength T Butt Weld Test Piece Using the Contour Residual Stress Measurement Technique

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Validation of Neutron Diffraction and the Incremental Deep Hole Drilling Residual Stress Measurements of a High Strength T Butt Weld Test Piece Using the Contour Residual Stress Measurement Technique

G. Sloan, X. Ficquet, D. Cave, K. Serasli, E. Kingston, V. Linton

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Abstract. Off shore ring stiffened cylindrical structures are subjected to high stresses caused by static or variable external hydrostatic pressure and residual stresses due to the fabrication and welding processes. The use of numerical simulation allows a straightforward calculation of the stresses induced by the hydrostatic pressure in the structure. However it is more intricate to determine the residual stresses resulting from the progressive manufacture of components and assembly using a multi-pass welding processes. This paper presents the work carried out to ascertain the residual stresses present within a high strength welded T-plate test piece, representative of part of a ring stiffened cylindrical structure, by the contour method to determine the longitudinal residual stresses across the width of the test piece. This test piece had previously been subjected to neutron strain scanning in a pattern across the test piece and also the incremental Deep Hole Drilling (iDHD) and, the Deep Hole Drilling (DHD) processes to validate the neutron results for the longitudinal and transverse components of residual stress in the weld toe and centreline of the T butt weld. Therefore the work on this test piece is unique as three methods of residual stress measurement have been used. The results of these measurements are presented and compared to highlight agreements and discrepancies in the measured residual stresses by each method.

Keywords
Welding, Residual Stress, Neutron Diffraction, Contour Method, Stress Corrosion Cracking, Corrosion Fatigue, T Butt

Published online 12/22/2016, 6 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: G. Sloan, X. Ficquet, D. Cave, K. Serasli, E. Kingston, V. Linton, ‘Validation of Neutron Diffraction and the Incremental Deep Hole Drilling Residual Stress Measurements of a High Strength T Butt Weld Test Piece Using the Contour Residual Stress Measurement Technique’, Materials Research Proceedings, Vol. 2, pp 133-138, 2017

DOI: http://dx.doi.org/10.21741/9781945291173-23

The article was published as article 23 of the book Residual Stresses 2016

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] G. W. Sloan, V. M. Linton, O. Kirstein, X. Ficquet, E. Kingston, I Brown Residual Stress Measurement in a High Strength T Butt Weld Specimen by the Neutron Diffraction and Deep Hole Drilling Techniques, ICRS 10 Sydney 2016.
[2] G. W. Sloan, “The influence of welding variables on the residual stress profile around T butt and MMAW butt welds in thick section high strength steel”, Master’s Thesis, University of Adelaide 2016.
[3] S. Pearce, “Breakdown of residual stresses in highly restrained thick section welds”, Doctoral thesis, University of Adelaide, 2016.
[4] Information on http://www.veqter.co.uk
[5] S. Kendrick, “Structural design of submarine pressure vessels”, NCRE report R483, March 1964.