FULL PENETRATION K WELDS OR DOUBLE FILLET WELDS IN HEAVY SHIPBUILDING
When the scantlings in ships grow in size as the ships get bigger, some welded T connections, where the classification societies normally accept fillet welds, will be required to be full penetration welds. Such welds have, however, shown an increased tendency to crack, as the transverse member in the T joint is heavily stressed in the through-thickness direction. To establish the necessary fillet weld size for the same strength as for a full penetration weld in a structural part in 35mm thick steel mechanical tests such as tensile, shear, and fatigue tests and a stress analysis through optical stress analysis were done at Kockums shipyard. Practical experience gained from ships built and surveyed earlier and the test results indicated that a double fillet weld with a throat of 18mm should give the same load-carrying capacity as a full penetration weld in 35mm plate in an important bracket connection in big tankers of 355,000 DWT.
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Supplemental Notes:
- From Structural Design and Fabrication in Shipbuilding, International Conference in London, England, November 18-20 1975.
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Corporate Authors:
Welding Institute
Abingdon Hall
Cambridge CB1 6AL, England -
Authors:
- Leide, N G
- Conference:
- Publication Date: 1976
Media Info
- Pagination: p. 191-202
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Serial:
- Volume: 1
Subject/Index Terms
- TRT Terms: Fillet welds; Shipbuilding; Strength of materials; Stresses; Structural analysis; Weld strength; Welding; Welds
- Old TRIS Terms: Double fillet welds; Full penetration welds; Weld stresses
- Subject Areas: Construction; Marine Transportation;
Filing Info
- Accession Number: 00159467
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: Aug 31 1977 12:00AM