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Experimental determination of accurate fatigue crack growth data in Tailored Welded Blanks

Schwinn, Julian and Besel, Michael and Alfaro Mercado, Ulises (2016) Experimental determination of accurate fatigue crack growth data in Tailored Welded Blanks. Engineering Fracture Mechanics, 163, pp. 141-159. Elsevier. DOI: 10.1016/j.engfracmech.2016.07.006 ISSN 0013-7944

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Official URL: http://www.sciencedirect.com/science/article/pii/S0013794416302922


Abstract Joining of Tailored Welded Blanks (TWB) with Friction Stir Welding (FSW) is very attractive for future aircraft applications. This article provides the main findings of extensive studies of fatigue crack propagation in FSW-TWB made of AlMgSc alloy. The measurement of actual mechanical test conditions in combination with finite element simulations allows overcoming inherent drawbacks of conventional single edge notch tension (SENT) specimens. Residual stresses as result of the {FSW} process are measured via the cut-compliance-method. It is shown, that in case of FSW-TWB only the consideration of actual test conditions and residual stresses yields accurate fatigue crack propagation data.

Item URL in elib:https://elib.dlr.de/105846/
Document Type:Article
Title:Experimental determination of accurate fatigue crack growth data in Tailored Welded Blanks
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwinn, Julianjulian.schwinn (at) dlr.deUNSPECIFIED
Besel, Michaelmichael.besel (at) dlr.deUNSPECIFIED
Alfaro Mercado, Ulisesulises.alfaro (at) dlr.deUNSPECIFIED
Date:September 2016
Journal or Publication Title:Engineering Fracture Mechanics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.engfracmech.2016.07.006
Page Range:pp. 141-159
Keywords:Tailored Welded Blanks, Fatigue crack growth, Residual stress, Friction stir welding, Finite element analysis
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Schwinn, Julian
Deposited On:04 Oct 2016 11:11
Last Modified:06 Sep 2019 15:19

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