Zitieren Sie bitte immer diesen URN: urn:nbn:de:kobv:b43-466053
In-situ determination of critical welding stresses during assembly of thick-walled components made of high-strength steel
- The performance and safety of welded high-strength low-alloyed steel (HSLA) components are substantially affected by the stresses occurring during and after welding fabrication, especially if welding shrinkage and distortion are severely restrained. The surrounding structure of the whole component affects loads in the far-field superimposing with welding stresses in the near-field of the weld. In this study a unique testing facility was used to restrain shrinkage and bending while analyse multiaxial far-field loads (max. 2 MN) during assembly of thick-walled component. A novel approach for the assessment of the in-situ-measured far-field data in combination with the actual weld geometry was elaborated. For the first time, analyses of the global bending moments of restrained welds based on the neutral axis of the actual weld load bearing section were achieved. Hence, far-field measurements offered the possibility to determine critical near-field stresses of the weld crosssections forThe performance and safety of welded high-strength low-alloyed steel (HSLA) components are substantially affected by the stresses occurring during and after welding fabrication, especially if welding shrinkage and distortion are severely restrained. The surrounding structure of the whole component affects loads in the far-field superimposing with welding stresses in the near-field of the weld. In this study a unique testing facility was used to restrain shrinkage and bending while analyse multiaxial far-field loads (max. 2 MN) during assembly of thick-walled component. A novel approach for the assessment of the in-situ-measured far-field data in combination with the actual weld geometry was elaborated. For the first time, analyses of the global bending moments of restrained welds based on the neutral axis of the actual weld load bearing section were achieved. Hence, far-field measurements offered the possibility to determine critical near-field stresses of the weld crosssections for the entire joining process. This work presents the approach for far-to-near field in-situ determination of stresses in detail for the 2-MN-testing system based on an extensive experimental work on HSLA steel welds, which demonstrates sources and consequences of these high local welding stresses. Thus, it was clarified, why the first weld beads are crucial regarding welding stresses and cold cracking, which is well known, but has never been measured so far. Accompanying analyses using X-ray diffraction (XRD) after welding show effects on local residual stress distributions. These analyses indicated viable prospects for stress reduction during assembly of thick-walled HSLA steel components.…
Autor*innen: | Dirk SchröpferORCiD, Arne KrommORCiD, Andreas Hannemann, Thomas KannengießerORCiD |
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Persönliche Herausgeber*innen: | Marc Seefeldt |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Residual stresses 2018, ECRS-10 |
Jahr der Erstveröffentlichung: | 2018 |
Organisationseinheit der BAM: | 9 Komponentensicherheit |
9 Komponentensicherheit / 9.2 Versuchsanlagen und Prüftechnik | |
9 Komponentensicherheit / 9.4 Integrität von Schweißverbindungen | |
Veröffentlichende Institution: | Bundesanstalt für Materialforschung und -prüfung (BAM) |
Verlag: | Materials Research Forum LLC |
Verlagsort: | Millersville, PA, USA |
Jahrgang/Band: | 6 |
Erste Seite: | 191 |
Letzte Seite: | 196 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | HSLA steel; Large-scale test; Residual stress; Welding; X-ray diffraction |
Themenfelder/Aktivitätsfelder der BAM: | Material |
Material / Degradation von Werkstoffen | |
Veranstaltung: | European Conference on Residual Stresses 2018 - ECRS-10 |
Veranstaltungsort: | Leuven, Belgium |
Beginndatum der Veranstaltung: | 11.09.2018 |
Enddatum der Veranstaltung: | 14.09.2018 |
DOI: | 10.21741/9781945291890-30 |
URN: | urn:nbn:de:kobv:b43-466053 |
ISSN: | 2474-395X |
ISSN: | 2474-3941 |
ISBN: | 978-1-9452-9188-3 |
ISBN: | 978-1-9452-9189-0 |
Verfügbarkeit des Dokuments: | Datei für die Öffentlichkeit verfügbar ("Open Access") |
Lizenz (Deutsch): | Creative Commons - CC BY - Namensnennung 4.0 International |
Datum der Freischaltung: | 16.11.2018 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 20.12.2018 |
Schriftenreihen ohne Nummerierung: | Wissenschaftliche Artikel der BAM |