The available fatigue crack growth data on mechanically loaded welded tubular connections from the UK Offshore Steel Research Project has been reviewed. It is found that fatigue cracks develop a characteristic aspect ratio which remains fairly constant throughout life. This crack shape is compared with a simple fracture mechanics model. The crack development with time enables the surface length to be related to the normalised life. From this it is determined that providing a crack of surface length equal to twice the member wall thickness can be found by in-service inspection, there is 30 per cent of life remaining to carry out a repair.
The development of cracks in welded tubular connections of offshore structures
Entwicklung von Rissen in geschweissten Rohrverbindungen in meerestechnischen Anlagen
Circumferential Cracks in Pressure Vessels and Piping ; PVP-94 ; 163-171
1984
9 Seiten, 8 Bilder, 7 Quellen
Conference paper
English
The Prediction of Crack Shape Development for In-service Cracks in Offshore Welded Tubular Joints
British Library Online Contents | 1995
|A study of fatigue design procedure for tubular connections of offshore structures
Tema Archive | 1980
|Design appraisal of offshore platforms of welded tubular construction
Tema Archive | 1974
|Design appraisal of offshore platforms of welded tubular construction
Tema Archive | 1974
|Welded offshore Structures : Conference Proceedings
TIBKAT | 1984
|