PL-3 Junior Research Group Interfaces: Properties - Modification - Characterization

Welcome to the junior research group "Interfaces: Properties - Modification - Characterization". Our group is located at the research campus Open Hybrid LabFactory e.V. in Wolfsburg. The focus of our research activities is the tailored adjustment of interface properties, their suitable and industrial feasible characterization as well as the correlation with the properties of the composite material. Wetting, adhesion as well as corrosion or degradation are directly related to the chemical composition and the morphology of interfaces. As a result, boundary layers are of the highest relevance for the properties of hybrid composites and thus important for a large number of activities within the mobility research.

Interfaces are the most property determinant elements in the interaction between different phases. In the field of composites and hybrid components, they are crucial because of their structural function within the material. In the majority of cases interfaces have only a dimension of a few nanometers and their properties can completely differ from the base material. Due to the small geometrically dimension of the interfaces their characterization is still challenging. The application of high-resolution analytics and the development of adjusted characterization methods is one main task of the junior research group. Photoelectron spectroscopy, scanning electron and atomic force microscopy are applied in a novel approach to obtain further information on manufacturing process-related properties of interfaces. The application of infrared microscopy, in-situ ?-computed tomography and new testing techniques are used to develop methods for industrial interface analysis.

The chemical and morphological modification of interfaces is the second main task of the junior research group. The methods for interface modification include laser processing and structuring, chemical and electrochemical treatment, plasma treatment and coating, incorporation of nanoparticles and molecular adaptation of polymers at the interface.

Members on the part of Technische Universität Braunschweig:

• Prof. Dr.-Ing K. Dilger, Institute of Joining and Welding (ifs): Adhesive and mechanical joining, composite technology, strength and component behavior
• Prof. Dr.-Ing. K. Dröder, Institute of Machine Tools and Production Technology (IWF): Production technology, production of hybrid components as well as assembly and production automation
• Prof. Dr.-Ing. A. Kwade,Institute for Particle Technology (iPAT): Formulation and comminution technology, battery process engineering, nanomaterials, simulation and modeling

Members on the part of Leibniz Universität Hannover:

• Prof. Dr.-Ing. H. J. Maier, Institute of Materials Science (IW): Mechanical testing, microstructure analysis, joining technology
• Prof. Dr.-Ing. habil. P. Wriggers, Institute of Continuum Mechanics (ikm)

1.    Lippky, K.; Mund, M.; Blass, D.; Dilger, K., Development of a Repair Method for Metal and Thermoplastic-Fiber-Reinforced (TP-FR) Fusion Bonded Joints, Conference Proceedings Adhesion Society Annual Meeting 2018
2.    Mund, M. ; Lippky, K. ; Blass, D. ; Dilger, K., Influence of internal release agent content on bonding properties of fiber reinforced plastics, Conference Proceedings Adhesion Society Annual Meeting 2018
3.    Lippky, K. ; Mund, M. ; Blass, D. ; Dilger, K., Investigation of hybrid fusion bonds under varying manufacturing and operating procedures, Composite Structures July 2018
4.    Gundlach, C; Hartwig, S.; Mannig, M.; Menzel, M.; Smatt. T.; Dilger, K., A specimen for evaluation potting materials in functional integrated design solutions, Proceedings 3. Hybrid Materials and Structures 2018
5.    Reincke, T.; Hartwig, S.; Dilger, K. , Enhanced Comprehension of the Continuous Fusion Bonding Process of Multi-Material Structures, Materials Science Forum 939 2018
6.    J. Brodhun, D.Blass, K.Dilger, Laser Transmission Joining of Thermoplastic Fasterners: Application for Thermoset CFRP, Journal of Materials: Design and Application (Special Issue: MDA 2018)
7.    J. Brodhun, D.Blass, K.Dilger, Laser Tranmission Welding of Thermoplastic Fasteners: Influence of Temperature Distribution in a Scanning Based Process, Procedia CIRP 74 2018
8.    Wehbe, H. ; Blass, D. ; Dilger, K., Extracting a characteristic value concerning metal-composite-hybrids – identification of the relevant testing method, The Journal of Adhesion 2018
9.    C. Gundlach, S. Hartwig, M. Mannig, M. Menzel, P. Lück, K. Dilger, Anwendung eines hybriden Prüfkörpers zur Auslegung des Rotorvergusses in automobilen E-Maschinen, Plastics in Automotive Engineering, VDI PIAE, Mannheim, 03./04. April 2019
10.    H. Schneider, S. Hartwig, K. Dilger, C. Schütz, Verwendung von APTMS-HMDSO-Gemischen in PECVD-Prozessen, Tagungsband NSM2019 2019
11.    Lippky, K. ; Mund, M.; Hartwig, S. ; Dilger, K., Alterungsuntersuchung an intrinsischen Hybridverbindungen. In: Clausthaler Zentrum für Materialtechnik, Tagungsband NSM2019 2019
12.    Mund, M. ; Lippky, K. ; Blass, D. ; Dilger, K., Influence of production based surface topography and release agent amount on bonding properties of CFRP, Composite Structures 2019
13.    Lippky, K. ; Hartwig, S. ; Blass, D. ; Dilger, K., Bonding performance after aging of fusion bonded hybrid joints, International Journal of Adhesion and Adhesives, 2019
14.    Reincke, T.; Hartwig, S.; Dilger, K., Improvement of the adhesion of continuously manufactured multi-material joints by application of thermoplastic adhesive film, International Journal of Adhesion and Adhesives, 2019
15.    Wehbe, H. ;  Kandula, M. ; Hartwig, S. ; Dilger, K., Charakterisierung hybrider Komposite-Metall-Strukturen – Ermittlung einer Prüfmethode, Tagungsband NSM2019 2019
16.    Wehbe, H. ;  Kandula, M. ; Hartwig, S. ; Dilger, K., Applicability of ISO 14125 for Steel-Composite Structures, Online proceedings of 22nd International Conference on Composite Materials, 2019
17.    Gundlach, C.; Hartwig, S.; Mannig, M.; Menzel, M.; Smatt, T.; Dilger, K.: A SPECIMEN FOR EVALUATING POTTING MATERIALS IN FUNCTIONAL INTEGRATED DESIGN SOLUTIONS, Hybrid materials and Structures, 2018. ISBN 978-3-88355-417-4.
18.    Reincke, T.; Hartwig, S.; Dilger, K.: High-tensile joints of continuously manufactured fusion bonded hybrid structures, 20th International Conference on Composite Structures, 2017. DOI: 10.1016/j.compstruct.2017.12.027.
19.    Reincke, T.; Kreling, S.; Dilger, K.: Adhesion of continuously manufactured fusion bonded multi-material structures consisting of steel and carbon fibre reinforced Polyamide 6, International Journal of Adhesion and Adhesives, 2017. DOI: 10.1016/j.ijadhadh.2017.09.012
20.    Klose, C.; Freytag, P.; Otten, M.; Thürer, S.E.; Maier, H.J. (2018): Thermal Properties of Intermetallic Phases at the Interface of Aluminum-Copper Compound Castings. Advanced Engineering Materials 29, S. 1701027.
21.    Otten, M.; Klose, C.; Möhwald, K.; Knödler, P.; Maier, H.J. (2017): Untersuchung der Serientauglichkeit des Schichttransplantationsprozesses zur Herstellung von beschichteten Druckgussbauteilen. Giesserei-Special Forschung und Innovation 1 (1), S. 74-89.
22.    Thürer, S.E.; Uhe, J.; Golovko, O.; Bonk, C.; Bouguecha, A.; Klose, C.; Behrens, B.-A.; Maier, H.J. (2017): Co-extrusion of semi-finished aluminium-steel compounds. AIP Conference Proceedings 1896, S. 140002.
23.    Thürer, S.E.; Uhe, J.; Golovko, O.; Bonk, C.; Bouguecha, A.; Behrens, B.-A.; Klose, C. (2017): Mechanical Properties of Co-Extruded Aluminium-Steel Compounds. Key Engineering Materials 742, S. 512-519.
24.    Engelhardt, M.; Behne, D.; Grittner, N.; Neumann, A.; Reimche, W.; Klose, C. (2015): Non-destructive Testing of Longitudinal and Charge Weld Seams in Extruded Aluminum and Magnesium Profiles. Materials Today: Proceedings 2 (10), S. 4866-4873.
25.    v Grittner, N.; Striewe, B.; Hehl, A. von; Engelhardt, M.; Klose, C.; Nürnberger, F. (2014): Characterization of the interface of co-extruded asymmetric aluminum-titanium composite profiles. Materialwissenschaft und Werkstofftechnik 45 (12), S. 1054-1060.

Prof. Dr. rer. nat. Sven Hartwig