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Two-stage leak detection in vacuum bags for the production of fibre-reinforced composite components

Haschenburger, Anja and Heim, Clemens (2019) Two-stage leak detection in vacuum bags for the production of fibre-reinforced composite components. CEAS Aeronautical Journal, pp. 1-8. Springer. DOI: 10.1007/s13272-018-00357-y ISSN 1869-5590

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The increasing application of fibre-reinforced composite components in aviation results in new problems in production when compared to the conventional production of components from aluminium alloys. For instance, the existence of leakages in the vacuum bag can substantially impact the component quality. A significant increase of both time and cost, and even the rejection of the entire component are caused. Commercially available methods are suitable for identifying leakages in vacuum bags; however, their application is predominantly associated with high outlay in labour and time, and, thus, high costs. Market analysis and comparison of different available leakage detection technologies conducted in the course of the advanced detection of leakages project with our collaborative partner Airbus Operations GmbH Stade has shown that the combination of run-time based leakage detection and infrared thermography is the most promising concept for quick, reliable, and automated identification of leakages in vacuum bags for large components. In combination, both technologies are able to compensate for their respective detection limits, and significantly reduce the time required. In addition to the analysis and assessment of different technologies for leakage detection, the investigations presented also include the development of run-time based leakage detection using sensors integrated into the vacuum bag. Furthermore, the linking, further development, and automation of leakage detection using infrared thermography are described.

Item URL in elib:https://elib.dlr.de/126834/
Document Type:Article
Title:Two-stage leak detection in vacuum bags for the production of fibre-reinforced composite components
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Haschenburger, AnjaAnja.Haschenburger (at) dlr.dehttps://orcid.org/0000-0001-9342-0220
Heim, ClemensClemens.Heim (at) airbus.comUNSPECIFIED
Date:January 2019
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/s13272-018-00357-y
Page Range:pp. 1-8
Keywords:Leakage detection, Vacuum bagging, Infrared thermography, Composite, Autoclave
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: Stade
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Deposited By: Haschenburger, Anja
Deposited On:21 Jun 2019 12:10
Last Modified:21 Jun 2019 12:10

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