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The Adhesive Zone Mix Disbond Arrest Feature Results (EU-FP7 Project BOPACS)

Holzhüter, Dirk und Löbel, Thomas und Hühne, Christian (2018) The Adhesive Zone Mix Disbond Arrest Feature Results (EU-FP7 Project BOPACS). AVT-266 Research Specialists’ Meeting on Use of Bonded Joints in Military Applications, 2018-04-15 - 2018-04-16, Turin, Italien.

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Kurzfassung

Nowadays bonded joints are state of the art in the assembly of composite aircraft structures. Due to current civil aerospace regulations, the implementation of secondary bonded joints is limited. However, current regulations and means of compliance provided by the authorities offer four possibilities to attain certification of safety critical structures: a fail-safe joint design, full proof testing, non-destructive testing of the joint strength, and a secured maximum disbond by design features assuring a limit load capacity of the remaining joint. The last approach has been investigated thoroughly in the European 7th Framework research project BoPACs (Boltless Assembly of Primary Aircraft Structures). The presented paper summarizes the activities and results of the German Aerospace Center within the BoPACs project. In particular, this paper focuses on the so called Adhesive Zone Mix Disbond Arrest Feature developed by DLR. The feature efficiently combines an adhesively bonded and a thermoplastic welded joint. The thermoplastic weld stops growing cracks due to its high toughness while the conventional adhesively bonded joint carries the major operational loads. The paper outlines the smart manufacturing process enabling an easy to use and cost efficient Disbond Stopping Feature. The mechanical effectiveness is validated on coupon level with fatigue testing of cracked lap shear (CLS) samples. Experimental and analysis results are summarized. Conclusions from tests and a further improvement of the feature, the so called Surface Toughening Feature, are presented. The authors kindly acknowledge the European Commission for funding the research and the contributing partners for the excellent cooperation within the project.

elib-URL des Eintrags:https://elib.dlr.de/119840/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:The Adhesive Zone Mix Disbond Arrest Feature Results (EU-FP7 Project BOPACS)
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Holzhüter, DirkDirk.Holzhueter (at) dlr.dehttps://orcid.org/0000-0003-1001-2366NICHT SPEZIFIZIERT
Löbel, ThomasThomas.Loebel (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Hühne, ChristianChristian.Huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223NICHT SPEZIFIZIERT
Datum:16 April 2018
Referierte Publikation:Nein
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Hybrid Bondline, Crack Stopping, Disbond Arrest Feature, Bonding Certification, BOPACS, Adhesive Zone Mix, Composite Bonding
Veranstaltungstitel:AVT-266 Research Specialists’ Meeting on Use of Bonded Joints in Military Applications
Veranstaltungsort:Turin, Italien
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:15 April 2018
Veranstaltungsende:16 April 2018
Veranstalter :NATO STO
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)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Funktionsleichtbau
Hinterlegt von: Holzhüter, Dirk
Hinterlegt am:28 Mai 2018 11:26
Letzte Änderung:24 Apr 2024 20:24

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