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The Effects of Plate Dimensions on Residual Stresses in Welded Thin Steel Plates

[+] Author Affiliations
C. M. Davies, D. Dye, K. M. Nikbin

Imperial College London, London, UK

R. C. Wimpory

Hahn-Meitner-Institut, Berlin, Germany

Paper No. PVP2008-61200, pp. 309-319; 11 pages
doi:10.1115/PVP2008-61200
From:
  • ASME 2008 Pressure Vessels and Piping Conference
  • Volume 6: Materials and Fabrication, Parts A and B
  • Chicago, Illinois, USA, July 27–31, 2008
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4829-6
  • Copyright © 2008 by ASME

abstract

Residual stress distributions have been measured on thin (4 mm thick) plates made from a ferritic steel designated grade DH-36 using the neutron diffraction technique. The welded specimens include two large (1 m × 1 m) butt welded plates, onto one fillet welded stiffeners were also added, and a smaller (0.5 m × 0.5 m) fillet welded stiffened plates. The large butt and fillet welded stiffened plate has also been cut to smaller dimensions and the strain relaxation due to cutting quantified by strain gauges. The residual stress distributions have been re-measured after specimen cutting and the relaxation quantities compared to the strain gauge values. The influence of specimen size is also examined by comparing measurements at the base of the fillet welds in the large and smaller plates. The results are interpreted to identify plate size effects on the residual stress levels of the welds.

Copyright © 2008 by ASME

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