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Biaxial testing of cruciform specimens representing characteristics of a metallic airplane fuselage section

Breitbarth, Eric and Besel, Michael and Reh, Stefan (2018) Biaxial testing of cruciform specimens representing characteristics of a metallic airplane fuselage section. International Journal of Fatigue. Elsevier. DOI: 10.1016/j.ijfatigue.2017.12.005 ISSN 0142-1123

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Official URL: https://www.sciencedirect.com/science/article/pii/S0142112317304413

Abstract

Based on biaxial tests with cruciform specimens, the scenario of fatigue cracks in the upper fuselage section between the wings and the tail unit of a commercial single aisle aircraft has been studied. Two different types of specimen were designed, namely for the scenario of a circumferential crack across a broken stringer and for a longitudinal crack parallel to the stringers. With crack length up to 2a ≈ 610 mm, maximum mode I stress intensity factors of 160 MPa√m were obtained for the commercial aluminum alloys AA2024-T351 and AA5028-H116. All experiments were supported by digital image correlation to obtain the actual deformation fields of the specimens. Based on these data stress intensity factors and J integrals were computed with a line integral procedure. Furthermore, plastic zone and crack closure effects were studied.

Item URL in elib:https://elib.dlr.de/116978/
Document Type:Article
Title:Biaxial testing of cruciform specimens representing characteristics of a metallic airplane fuselage section
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Breitbarth, EricEric.Breitbarth (at) dlr.deUNSPECIFIED
Besel, Michaelmichael.besel (at) dlr.deUNSPECIFIED
Reh, Stefanstefan.reh (at) dlr.deUNSPECIFIED
Date:March 2018
Journal or Publication Title:International Journal of Fatigue
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.ijfatigue.2017.12.005
Publisher:Elsevier
ISSN:0142-1123
Status:Published
Keywords:Biaxial testing; Fatigue crack; Plastic zone; Aluminum; Digital image correlation
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, L - Simulation and Validation
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Breitbarth, Eric
Deposited On:12 Dec 2017 07:45
Last Modified:08 Mar 2018 18:38

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