Breitbarth, Eric und Besel, Michael (2018) Fatigue crack deflection in cruciform specimens subjected to biaxial loading conditions. International Journal of Fatigue. Elsevier. doi: 10.1016/j.ijfatigue.2018.04.021. ISSN 0142-1123.
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Offizielle URL: https://www.sciencedirect.com/science/article/pii/S0142112318301592
Kurzfassung
Crack deflection is studied for the aluminum alloys AA2024-T351 and AA5028-H116 under biaxial fatigue loading. With cruciform specimens that have a testing area of about 420 × 420 mm² a fatigue crack was subjected to nominal biaxiality ratios between 1.0 and 3.0. Consequently, the crack is subjected to different magnitudes of T-stress. Finite element simulations of the growing crack revealed that the crack path is not significantly influenced by the T-stress but the T-stress predicts whether the crack path remains stable. If at least two crack paths are basically possible the crack will kink for positive T-stresses and remain stable for negative T-stresses. Furthermore, small spikes with strain concentrations along the crack path are identified with digital image correlation which might cause crack deflection in this case.
elib-URL des Eintrags: | https://elib.dlr.de/119914/ | ||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||
Titel: | Fatigue crack deflection in cruciform specimens subjected to biaxial loading conditions | ||||||||||||
Autoren: |
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Datum: | August 2018 | ||||||||||||
Erschienen in: | International Journal of Fatigue | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Ja | ||||||||||||
In ISI Web of Science: | Ja | ||||||||||||
DOI: | 10.1016/j.ijfatigue.2018.04.021 | ||||||||||||
Verlag: | Elsevier | ||||||||||||
ISSN: | 0142-1123 | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Biaxial testing; Fatigue crack; Crack deflection; Aluminum; T-stress | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||
HGF - Programmthema: | Flugzeuge | ||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||
DLR - Forschungsgebiet: | L AR - Aircraft Research | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Strukturen und Werkstoffe (alt), L - Simulation und Validierung (alt) | ||||||||||||
Standort: | Köln-Porz | ||||||||||||
Institute & Einrichtungen: | Institut für Werkstoff-Forschung > Metallische Strukturen und hybride Werkstoffsysteme | ||||||||||||
Hinterlegt von: | Breitbarth, Eric | ||||||||||||
Hinterlegt am: | 08 Aug 2018 09:37 | ||||||||||||
Letzte Änderung: | 02 Nov 2023 09:54 |
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