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Measurement of Epoxy Film Adhesive Properties in Torsion and Tension Using Tubular Butt Joints

Kosmann, Jens and Klapp, Oliver and Holzhüter, Dirk and Schollerer, Martin and Fiedler, Arne and Nagel, Christoph and Hühne, Christian (2018) Measurement of Epoxy Film Adhesive Properties in Torsion and Tension Using Tubular Butt Joints. International Journal of Adhesion and Adhesives, 83, pp. 50-58. Elsevier. DOI: 10.1016/j.ijadhadh.2018.02.020 ISBN 0143-7496 ISSN 0143-7496

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Official URL: https://doi.org/10.1016/j.ijadhadh.2018.02.020


With the increasing amount of composite materials used for aircraft structures, structural bonding and bonded repairs are needed. However, a huge challenge is the availability of reliable material properties for the adhesives. A common approach for determining the material properties is to use adhesively bonded tubular butt joint specimens, tested in a biaxial testing system. In order to determine stress-strain curves of the adhesive systems local strain or deformation measurements needs to be performed. But because of the small bondline thickness of an e.g. epoxy film adhesive, the resulting deformations are very small. Within this study, two different strain measurement techniques are used. First a high resolution digital image correlation (DIC) system. Second capacitive sensors combined in a manner, which allows the decoupled measuring of axial and torsional movements. Both methods and results are compared and discussed. Both have their advantages and the ability to measure the small deformations.

Item URL in elib:https://elib.dlr.de/121400/
Document Type:Article
Title:Measurement of Epoxy Film Adhesive Properties in Torsion and Tension Using Tubular Butt Joints
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kosmann, Jensjens.kosmann (at) dlr.dehttps://orcid.org/0000-0002-2225-4832
Klapp, OliverFraunhofer IFAMUNSPECIFIED
Holzhüter, Dirkdirk.holzhueter (at) dlr.dehttps://orcid.org/0000-0003-1001-2366
Schollerer, MartinMartin.Schollerer (at) dlr.dehttps://orcid.org/0000-0001-7015-9461
Fiedler, ArneFraunhofer IFAMUNSPECIFIED
Nagel, ChristophFraunhofer IFAMUNSPECIFIED
Hühne, Christianchristian.huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223
Date:June 2018
Journal or Publication Title:International Journal of Adhesion and Adhesives
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.ijadhadh.2018.02.020
Page Range:pp. 50-58
da Silva, Lucas F. M.UNSPECIFIED
Series Name:Special issue on joint design
Keywords:Digital image correlation (DIC) Contactless biaxial measuring Epoxides Destructive testing Mechanical properties of adhesives
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 - Simulation and Validation, L - Structures and Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Kosmann, Jens
Deposited On:13 Dec 2018 06:06
Last Modified:13 Dec 2018 06:06

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