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Experimental investigations on the fatigue resistance of automatically welded tubular X-joints for jacket support structures
- The development within the offshore wind sector towards more powerful turbines combined with increasing water depth for new wind parks is challenging both the designer as well as the manufacturer of bottom fixed support structures. Besides XL-monopiles, the market developed an innovative and economic jacket support structure which is based on automatically manufactured tubular joints combined with standardized pipes. Besides the improvements for a serial manufacturing process the automatically welded tubular joints show a great potential in terms of fatigue resistance e.g. due to a smooth weld geometry without sharp notches. However, these benefits are not considered yet within the fatigue design process of automatically manufactured jacket substructures according to current standards due to the lack of suitable S-N curves. Therefore, 32 axial fatigue tests on single and double-sided automatically welded tubular X-joints have been performed to determine a new hot spot stress relatedThe development within the offshore wind sector towards more powerful turbines combined with increasing water depth for new wind parks is challenging both the designer as well as the manufacturer of bottom fixed support structures. Besides XL-monopiles, the market developed an innovative and economic jacket support structure which is based on automatically manufactured tubular joints combined with standardized pipes. Besides the improvements for a serial manufacturing process the automatically welded tubular joints show a great potential in terms of fatigue resistance e.g. due to a smooth weld geometry without sharp notches. However, these benefits are not considered yet within the fatigue design process of automatically manufactured jacket substructures according to current standards due to the lack of suitable S-N curves. Therefore, 32 axial fatigue tests on single and double-sided automatically welded tubular X-joints have been performed to determine a new hot spot stress related S-N curve. Based on these constant amplitude fatigue tests a new S-N curve equal to a FAT 126 curve was computed which implicitly includes the benefits of the automatically welding procedure.…
Autor*innen: | P. Schaumann, K. Schürmann, Andreas PittnerORCiD, Michael RethmeierORCiD |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Journal of Physics: Conference Series |
Jahr der Erstveröffentlichung: | 2020 |
Organisationseinheit der BAM: | 9 Komponentensicherheit |
9 Komponentensicherheit / 9.3 Schweißtechnische Fertigungsverfahren | |
Veröffentlichende Institution: | Bundesanstalt für Materialforschung und -prüfung (BAM) |
Verlag: | IOP Publishing Ltd |
Jahrgang/Band: | 1669 |
Erste Seite: | 012022 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik |
Freie Schlagwörter: | Automated manufacturing; Fatigue tests; Notch stress approach; Structural stress approach; Tubular X-joints |
Themenfelder/Aktivitätsfelder der BAM: | Energie |
Veranstaltung: | EERA Deep Wind 2020 |
Veranstaltungsort: | Trondheim, Norway |
Beginndatum der Veranstaltung: | 15.01.2020 |
Enddatum der Veranstaltung: | 17.01.2020 |
DOI: | 10.1088/1742-6596/1669/1/012022 |
URN: | urn:nbn:de:kobv:b43-518509 |
Verfügbarkeit des Dokuments: | Datei für die Öffentlichkeit verfügbar ("Open Access") |
Lizenz (Deutsch): | Creative Commons - CC BY - Namensnennung 4.0 International |
Datum der Freischaltung: | 17.12.2020 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 08.04.2021 |
Schriftenreihen ohne Nummerierung: | Wissenschaftliche Artikel der BAM |