TY - CHAP A1 - Seidlitz, Holger A1 - Kuke, Felix A1 - Tsombanis, Nikolas T1 - Leichtbautechnologien und Mischbauweisen mit Faser-Kunststoff-Verbunden T2 - Innovationsforum des Regionalen Wachstumskerns Westlausitz, Cottbus, 2016 Y1 - 2016 UR - http://www2.fh-lausitz.de/fhl/iurs/downloads/Leichtbautechnologien_und_Mischbauweisen_mit_Faser-Kunststoff-Verbunden.pdf ER - TY - CHAP A1 - Seidlitz, Holger A1 - Fritzsche, Sebastian A1 - Schleuß, Leander A1 - Ossenbrink, Ralf A1 - Michailov, Vesselin T1 - Neuartige Fügetechnologie zum Herstellen von hochbelastbaren Multi-Material-Bauweisen aus textilverstärkten Kunststoffen und Metallen bei einseitiger Zugänglichkeit der Fügestelle T2 - DVS Congress 2016, Große Schweißtechnische Tagung, Vorträge der Veranstaltungen in Leipzig am 19. und 20. September 2016 Y1 - 2016 SN - 978-3-945023-74-7 SP - 424 EP - 428 PB - DVS-Verlag CY - Düsseldorf ER - TY - CHAP A1 - Fritzsche, Sebastian A1 - Seidlitz, Holger A1 - Winkelmann, Kai A1 - Michailov, Vesselin ED - Pająk, Anna T1 - Structural reinforced FRP sandwich constructions for lightweight floor panels T2 - Conference papers, APT '15, 11th International Conference Advances in Plastics Technology, Sosnowiec, 13 - 15 October 2015 Y1 - 2015 SN - 978-83-63555-47-4 CY - Gliwice ER - TY - CHAP A1 - Gerstenberger, Colin A1 - Seidlitz, Holger A1 - Osiecki, Tomasz A1 - Kroll, Lothar T1 - Bionic Inspired High Stressable Joints for Multi-material Constructions with FRP and Metals T2 - Materials Science Engineering (MSE 2014), Darmstadt, 2014 Y1 - 2014 UR - https://www-docs.b-tu.de/fg-leichtbau/public/publikationen/01_Abstract%20MSE%202014%20Gerstenberger%20et%20al.pdf ER - TY - CHAP A1 - Schulze, Marcus A1 - Seidlitz, Holger A1 - König, Franziska A1 - Weiß, Sabine ED - Dobrzański, Leszek A. T1 - Nanoindentation measurements of PVD coated multilayer constructions T2 - Programme and proceedings of the 22nd Winter International Scintific Conference on Achivements in Mechanical and Materials Engineering (AMME'15), Gliwice - Zakopane (Poland), 2015 Y1 - 2015 SN - 978-83-63553-39-5 PB - Gliwice CY - International OCSCO World Press ER - TY - GEN A1 - Seidlitz, Holger A1 - Simon, Sylvio A1 - Elze, Lars A1 - Schulze, Marcus T1 - Herstellung von strukturierten Leichtbaukomponenten Y1 - 2015 N1 - 15. Schwarzheider Kunststoffkolloquium, 22. September 2015 ER - TY - GEN A1 - Seidlitz, Holger A1 - Elze, Lars A1 - Schulze, Marcus T1 - Eigenschaften strukturierter Leichtbaukomponenten Y1 - 2015 N1 - DVS Congress und DVS Expo in Nürnberg am 16. und 17. September 2015 ER - TY - CHAP A1 - Hackert, Alexander A1 - Gerstenberger, Colin A1 - Osiecki, Tomasz A1 - Seidlitz, Holger T1 - Hybrid sandwich composites with porous aluminum core and thermoplastic fiber-reinforced composite top layers T2 - Proceedings of the 23rd Annual International Conference on Composites/Nano Engineering (ICCE23), Chengdu (China), 2015 Y1 - 2015 UR - https://www-docs.b-tu.de/fg-leichtbau/public/publikationen/HSC-short-paper_Hackert_2015-05-12.pdf SP - 247 EP - 248 ER - TY - CHAP A1 - Osiecki, Tomasz A1 - Gerstenberger, Colin A1 - Hackert, Alexander A1 - Kroll, Lothar A1 - Seidlitz, Holger T1 - Thermoplastic fiber reinforced/metal-hybrid laminates for structural lightweight applications T2 - Proceedings of the 23rd Annual International Conference on Composites/Nano Engineering (ICCE23), Chengdu (China), 2015 Y1 - 2015 UR - https://www-docs.b-tu.de/fg-leichtbau/public/publikationen/HL-short-paper_Osiecki_2015-05-12.pdf SP - 595 EP - 596 ER - TY - CHAP A1 - Gerstenberger, Colin A1 - Hackert, Alexander A1 - Osiecki, Tomasz A1 - Kroll, Lothar A1 - Seidlitz, Holger T1 - Load adjusted fiber reinforced polymer/metal joints in cathodic dip paint conditions T2 - Proceedings of the 23rd Annual International Conference on Composites/Nano Engineering (ICCE23), Chengdu (China), 2015 Y1 - 2015 UR - https://www-docs.b-tu.de/fg-leichtbau/public/publikationen/FDJ-short-paper_Gerstenberger_2015-05-12.pdf SP - 227 EP - 228 ER - TY - GEN A1 - Seidlitz, Holger A1 - Fritzsche, Sebastian A1 - Kloshek, Alexander A1 - Ambrosio, Marcello T1 - Advanced welding technology for highly stressable multi material designs with fiber-reinforced plastics and metals T2 - Open Journal of Composite Materials N2 - Organic sheets made out of fiber-reinforced thermoplastics are able to make a crucial contribution to increase the lightweight potential of a design. They show high specific strength- and stiffness properties, good damping characteristics and recycling capabilities, while being able to show a higher energy absorption capacity than comparable metal constructions. Nowadays, multi-material designs are an established way in the automotive industry to combine the benefits of metal and fiber-reinforced plastics. Currently used technologies for the joining of organic sheets and metals in large-scale production are mechanical joining technologies and adhesive technologies. Both techniques require large overlapping areas that are not required in the design of the part. Additionally, mechanical joining is usually combined with “fiber-destroying” pre-drilling and punching processes. This will disturb the force flux at the joining location by causing unwanted fiber- and inter-fiber failure and inducing critical notch stresses. Therefore, the multi-material design with fiber-reinforced thermoplastics and metals needs optimized joining techniques that don’t interrupt the force flux, so that higher loads can be induced and the full benefit of the FRP material can be used. This article focuses on the characterization of a new joining technology, based on the Cold Metal Transfer (CMT) welding process that allows joining of organic sheets and metals in a load path optimized way, with short cycle times. This is achieved by redirecting the fibers around the joining area by the insertion of a thin metal pin. The path of the fibers will be similar to paths of fibers inside structures found in nature, e.g. a knothole inside of a tree. As a result of the bionic fiber design of the joint, high joining strengths can be achieved. The increase of the joint strength compared to blind riveting was performed and proven with stainless steel and orthotropic reinforced composites in shear-tests based on the DIN EN ISO 14273. Every specimen joined with the new CMT Pin joining technology showed a higher strength than specimens joined with one blind rivet. Specimens joined with two or three pin rows show a higher strength than specimens joined with two blind rivets. KW - Multi-Material Design KW - Fiber Reinforced Plastics KW - Lightweight Automotive Structures Y1 - 2017 UR - https://www.scirp.org/Journal/PaperInformation.aspx?PaperID=77822 U6 - https://doi.org/10.4236/ojcm.2017.73010 SN - 2164-5655 SN - 2164 -5612 VL - 7 IS - 3 SP - 166 EP - 177 ER - TY - GEN A1 - Santhanakrishnan Balakrishnan, Venkateswaran A1 - Seidlitz, Holger A1 - Ambrosio, Marcello A1 - Schuhmann, Tilo T1 - Study on the Quality of Quasi-Isotropic Composite Laminates Containing a Circular Hole T2 - Journal of Materials Science Research N2 - Composite structures used in modern engineering applications are often subjected to circular holes in order to join with metal components via riveting, bolting or pinning joints. These design based holes will interrupt the force flux in the direction of the fibers and create high stress concentrations near the notched area. Objective of the project is to understand the quality of the quasi-isotropic composite laminates ([45°, -45°, 0°, 90°]S) containing circular hole. To achieve this objective, a 3-phase portal milling machine and a 5kW continuous wave (cw) CO2 laser system were used to produce the circular holes in the composite laminates. The processing parameters for both the processes are varied to understand its influence. The quality of the circular hole produced by these methods are further investigated and compared in order to arrive at the optimum processing parameters for the given quasi-isotropic composite laminates. The hole qualities were evaluated by means of delamination factor caused by milling; cone angle, matrix evaporation for cw-CO2 laser system. For further comparisons, the optimal parameter combinations of both methods were selected for a tensile test according to the standard ASTM D5766-2002. KW - circular hole KW - composite KW - CO2 laser KW - drilling KW - fiber reinforced polymer KW - FRP KW - notch Y1 - 2017 U6 - https://doi.org/10.5539/jmsr.v6n4p67 SN - 1927-0593 SN - 1927-0585 VL - 6 IS - 4 SP - 67 EP - 78 ER - TY - GEN A1 - Santhanakrishnan Balakrishnan, Venkateswaran A1 - Seidlitz, Holger T1 - Potential repair techniques for automotive composites: A review T2 - Composites Part B: Engineering N2 - Composite materials have gained popularity in automotive industries due to its lightweight potential, good damping behaviour as well as high strength and stiffness properties. Based on the increase in usage of composites, there is a growing interest for a repair technique in the automotive industry. Along with these raise in demand there comes a need for an all-inclusive review article and the objective of this article is to address this need. Two repair techniques, namely scarfing repair and injection repair, have the potential to be used in automotive industry. This paper compiles the various research work done in this field of repairing along with various processing steps associated with it. Further this paper reviews the non-destructive technique that can be used for damage identification and repair assessment. KW - Automotive repair KW - scarf repair KW - injection repair KW - polymer-matrix composites Y1 - 2018 UR - https://www.sciencedirect.com/science/article/pii/S1359836817342063 U6 - https://doi.org/10.1016/j.compositesb.2018.03.016 SN - 1359-8368 IS - 145 SP - 28 EP - 38 ER - TY - CHAP A1 - Seidlitz, Holger A1 - Kuke, Felix A1 - Tsombanis, Nikolas T1 - Advanced joining technology for the production of highly stressable lightweight structures, with fiber-reinforced plastics and metal T2 - 3rd International MERGE Technologies Conference (IMTC), Chemnitz, 2017 N2 - Organic sheets made of fiber-reinforced thermoplastics can make a crucial contribution to increase the lightweight potential of a technical design. They show high specific strength- and stiffness properties as well as good damping characteristics, while being able to show a higher energy absorption capacity than comparable metal constructions. In addition, organic sheets provide good recycling capabilities. Nowadays, multi-material designs are an established way in the automotive industry to combine the benefits of metal and fiber-reinforced plastics (FRP). Currently used technologies for the joining of organic sheets and metals in large-scale production are mechanical joining and adhesive technologies. Both require large overlapping areas to achieve the desired joint strength and stiffness of the technical design. Additionally, mechanical joining is usually combined with “fiber-destroying” pre-drilling and punching processes. This will disturb the force flux at the joint zone by causing unwanted fiber- and inter-fiber failure and inducing critical notch stresses. Therefore, the multi-material design with fiber-reinforced thermoplastics and metals needs optimized joining techniques that don’t interrupt the force flux, so that higher loads can be induced and the full benefit of the FRP material can be used. This article focuses on the characterization of a new joining technology, based on the Cold Metal Transfer (CMT) welding process, that allows to join organic sheets and metals in a load path optimized design. This is achieved by realigning the fibers around the joint zone by the integration of a thin metal pin. The alignment of the fibers will be similar to load paths of fibers inside structures found in nature. A tree with a knothole is always going to align its fibers in principle stress direction. As a result of the bionic fiber design, high joining strengths can be achieved. The increase of the joint strength compared to blind riveting was performed and proven with stainless steel and orthotropic reinforced composites in tensile shear-tests, based on the DIN EN ISO 14273. KW - Automotive KW - CMT-Welding KW - Composite KW - Joining KW - Metal Y1 - 2018 U6 - https://doi.org/10.21935/tls.v1i2.76 VL - 1 IS - 2 SP - 54 EP - 67 ER -