Fatigue testing of large scale details of a large size aluminium surface effect ship
conference paper
The paper presents the results of two large scale fatigue tests on a detail of an aluminium surface effect ship. The overall dimensions of the specimens were: length 4.8 m, height 3.2 m and width 1.5 m (equal to the main frame spacing). The specimens consist of an aluminium structure of welded plates (thicknesses up to 20 mm). The specimens were loaded with a constant amplitude loading, with an R ratio of 0,1. The nominal stress range at the weld detail was 18 N/mm2. The stress concentration factor at the main frame location was approximately 5. The comparison of the large scale results with the results of the small scale results leads to the conclusion that the lifetime of large scale tests (structures) is much longer. In large scale structures there is a longer stable crack grows period due to the redundancy in the structure.
TNO Identifier
328811
ISBN
0-444-82918-0
Publisher
Elsevier
Source title
Proceedings of the 7th International Symposium on Practical Design of Ships and Mobile Units, PRADS '98, The Hague, The Netherlands, 20-25 September 1998
Editor(s)
Oosterveld, M.C.W.
Tan, S.G.
Tan, S.G.
Collation
8 p.
Place of publication
Amsterdam
Pages
865-872
Files
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