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Automatically Welded Tubular X‐Joints for Jacket Substructures: Prediction of the Technical Fatigue Crack Location
Author(s) -
Schaumann Peter,
Schürmann Karsten,
Pittner Andreas,
Rethmeier Michael
Publication year - 2019
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.1140
Subject(s) - welding , changeover , structural engineering , stress (linguistics) , stress concentration , joint (building) , process (computing) , engineering , materials science , computer science , mechanical engineering , fracture mechanics , linguistics , philosophy , electrical engineering , transmission (telecommunications) , operating system
To increase the competitiveness of jacket substructures compared to monopiles a changeover from an individual towards a serial jacket production based on automated manufactured tubular joints combined with standardized pipes has to be achieved. Therefore, this paper addresses fatigue tests of automatically welded tubular X‐joints focusing on the location of the technical fatigue crack. The detected location of the technical crack is compared to numerical investigations predicting the most fatigue prone notch considering the structural stress approach as well as the notch stress approach. Besides, the welding process of the automated manufactured tubular X‐joints is presented.