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Advances in the Bondline Control Technology for the Certification of Adhesively Bonded Composite Repairs

Heilmann, Lennert and Wierach, Peter and Wiedemann, Martin (2019) Advances in the Bondline Control Technology for the Certification of Adhesively Bonded Composite Repairs. ICCM 22 - 22nd International Conference on Composite Materials, 11.-16. Aug. 2019, Melbourne.

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Abstract

Adhesively bonded composite repairs restoring limit load capacity are not yet certified in civil aviation due to a lack of methods suitable for the substantiation of proper bond quality. In our previous paper, we proposed a novel method for process control to resolve this issue. The core of this bondline control technology is a new type of adhesion test that provides proof of bond quality and simultaneously serves as a robust surface pre-treatment for adhesive bonding. The present study describes improvements implemented in the adhesion test and demonstrates the ability of the test to detect bonding defects. Furthermore, the applicability on stepped surfaces common for repair scenarios is investigated. Finally, a test series on the quality of the surface pre-treatment is presented.

Item URL in elib:https://elib.dlr.de/128892/
Document Type:Conference or Workshop Item (Speech)
Title:Advances in the Bondline Control Technology for the Certification of Adhesively Bonded Composite Repairs
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heilmann, Lennertlennert.heilmann (at) dlr.dehttps://orcid.org/0000-0001-7652-6306
Wierach, PeterPeter.Wierach (at) dlr.deUNSPECIFIED
Wiedemann, MartinMartin.Wiedemann (at) dlr.deUNSPECIFIED
Date:13 August 2019
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Composite repair, Adhesive bonding, Weak bond detection, Contaminants, Reparatur, Faserverbundwerkstoffe, Kleben, Klebkontrolle, Zertifizierung
Event Title:ICCM 22 - 22nd International Conference on Composite Materials
Event Location:Melbourne
Event Type:international Conference
Event Dates:11.-16. Aug. 2019
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: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Institute of Composite Structures and Adaptive Systems > Composite Technology
Institute of Composite Structures and Adaptive Systems > Composite Process Technology
Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Heilmann, Lennert
Deposited On:09 Sep 2019 08:06
Last Modified:09 Sep 2019 08:06

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