@inproceedings{SchmidJungbauerRomanoetal., author = {Schmid, Vinzent and Jungbauer, Bastian and Romano, Marco and Ehrlich, Ingo and Gebbeken, Norbert}, title = {The influence of different types of fabrics on the fibre volume content and porosity in basalt fibre reinforced plastics}, series = {2nd Applied Research Conference 2012 - ARC 25./26. June 2012}, booktitle = {2nd Applied Research Conference 2012 - ARC 25./26. June 2012}, editor = {Mottok, J{\"u}rgen and Ziemann, Olaf}, publisher = {Shaker}, pages = {162 -- 165}, abstract = {High quality semi-finished products with reproducible properties of basaltic fibres are hardly available on the market. In order to examine the properties of basalt fibre reinforced plastics high quality specimens are necessary. The fibre volume content and the porosity of the produced specimen are used as the typical criteria to evaluate the achieved quality of the produced material. The effect of the geometrical properties of the different semi-finished products on the fibre volume contents is relatively small whereas the porosity content is considerably affected.}, language = {en} } @inproceedings{SchmidJungbauerRomanoetal., author = {Schmid, Vinzent and Jungbauer, Bastian and Romano, Marco and Ehrlich, Ingo and Gebbeken, Norbert}, title = {Diminution of mass of different types of fibre reinforcements due to thermal load}, series = {Applied Research Conference 2012 - ARC 2012, 25./26. June 2012}, booktitle = {Applied Research Conference 2012 - ARC 2012, 25./26. June 2012}, editor = {Mottok, J{\"u}rgen and Ziemann, Olaf}, publisher = {Shaker}, pages = {231 -- 235}, language = {en} } @article{RomanoEisenriedJungbaueretal., author = {Romano, Marco and Eisenried, Michael and Jungbauer, Bastian and Ehrlich, Ingo and Gebbeken, Norbert}, title = {Influence of parameters of the production process on the material quality of unidirectionally reinforced prepregs}, series = {Journal of Achievements in Materials and Manufacturing Engineering (JAMME)}, volume = {68}, journal = {Journal of Achievements in Materials and Manufacturing Engineering (JAMME)}, number = {1}, pages = {32 -- 44}, abstract = {Purpose: A prepreg production device in laboratory scale is used to develop the production process of unidirectionally reinforced prepregs. Design/methodology/approach: The aim of the prepreg production device is to impregnate different types of reinforcement fibers with an arbitrarily selectable thermoset matrix system that completely satisfies the requirements for autoclave processing. As the prepreg production device is designed and built up modularly every module corresponds one step in the process. Findings: To identify the parameters of the production process and investigate its sensitivity on the material quality of both the prepreg as an uncured semi-finished product and the composite as the cured material experimental investigations regarding the resin flow, fiber volume content, mass per unit area and void content are carried out. Overall four material combinations have been investigated, where in each case the selected impregnation temperature and the width of the impregnation gap has been reproducibly varied in selected steps. Research limitations/implications: The experimental characterization of the prepregs and of the composite material is carried out according to German standards.}, language = {en} } @techreport{EisenriedRomanoJungbaueretal., author = {Eisenried, Michael and Romano, Marco and Jungbauer, Bastian and Ehrlich, Ingo and Gebbeken, Norbert}, title = {Herstellung von unidirektional verst{\"a}rkten Prepregs im Labormaßstab - Einfluss von Fertigungsparametern auf die Materialqualit{\"a}t}, series = {Forschungsbericht 2013 / Ostbayerische Technische Hochschule Regensburg}, journal = {Forschungsbericht 2013 / Ostbayerische Technische Hochschule Regensburg}, address = {Regensburg}, pages = {51 -- 52}, language = {de} } @article{SieglJungbauerGebhardtetal., author = {Siegl, Marco and Jungbauer, Bastian and Gebhardt, Jakob and Judenmann, Anna and Ehrlich, Ingo}, title = {Winding process of fibre-reinforced thermoplastic tubes with integrated tape production through in-situ roving impregnation and infrared consolidation}, series = {The International Journal of Advanced Manufacturing Technology}, volume = {135}, journal = {The International Journal of Advanced Manufacturing Technology}, number = {5-6}, editor = {Baeten, Somayeh}, publisher = {Springer Nature}, doi = {10.1007/s00170-024-14628-y}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-77827}, pages = {2847 -- 2870}, abstract = {This paper introduces a novel method for producing fibre-reinforced thermoplastic tubes by integrating tape production and consolidation into a single operation. This innovation diverges from conventional methods by combining processes to reduce costs by using raw materials instead of organotapes, allowing customised material combinations and utilising residual heat from tape production. The new process uses carbon roving and molten low-viscosity PA6 granulates, processed through a new direct impregnation setup in siphon design. Key advancements include a high-speed impregnation module capable of up to 1 m/s with high-performance extruders, cost-effective infrared emitters for winding, and a powered consolidation unit with adjustable winding angles between ±65° and ±90°. Experiments demonstrate operational speeds of approximately 471 mm/min, with an optimal cross-winding speed of 354 mm/min due to the technical limitations of the laboratory extruder and IR emitter used. Based on the technical limitations of the current system, future improvements and methodological changes will be discussed.}, language = {en} } @inproceedings{EisenriedRomanoJungbaueretal., author = {Eisenried, Michael and Romano, Marco and Jungbauer, Bastian and Ehrlich, Ingo and Gebbeken, Norbert}, title = {Influence of parameters of the production process on the material quality of unidirectionally reinforced prepregs}, series = {Applied Research Conference 2013, ARC 2013 ; 17th and 18th October 2013, Deggendorf}, booktitle = {Applied Research Conference 2013, ARC 2013 ; 17th and 18th October 2013, Deggendorf}, editor = {Ziemann, Olaf and Bogner, Werner and Mottok, J{\"u}rgen}, publisher = {Shaker}, address = {Aachen}, pages = {70 -- 75}, language = {en} } @inproceedings{LindnerBerndtTschurtschenthaletal., author = {Lindner, Matthias and Berndt, Dominik and Tschurtschenthal, Karl and Ehrlich, Ingo and Jungbauer, Bastian and Schreiner, Rupert and Pipa, Andrei V. and Hink, R{\"u}diger and Foest, R{\"u}diger and Brandenburg, Ronny and Neuwirth, Daniel and Karpen, Norbert and Bonaccurso, Elmar and Weichwald, Robert and Max, Alexander and Caspari, Ralf}, title = {Aircraft Icing Mitigation by DBD-based Micro Plasma Actuators}, series = {AIAA AVIATION 2020 FORUM: June 15-19, 2020}, booktitle = {AIAA AVIATION 2020 FORUM: June 15-19, 2020}, doi = {10.2514/6.2020-3243}, abstract = {We present the application of plasma actuators as a technology for ice prevention at airfoils. The miniaturized dielectric barrier discharge (DBD) plasma actuators (PA) were fabricated by means of microelectromechanical systems (MEMS). We elucidate how to make the actuator samples scalable and applicable to any desired shape by the use of flexible inorganic zirconia substrates. For this purpose, we applied our developed embedding method to integrate the micro actuators in modern carbon/glass fiber reinforced polymer (CFRP/GFRP) materials. Next, the embedded actuator samples were mounted on a mechanical air profile-like fixture and placed in the icing wind tunnel iCORE. The samples were tested in rime ice conditions at temperatures of -15 to -20° C and air speeds up to 30 m/s. Unlike other groups we used a thin film zirconia substrate as dielectric for the plasma actuator. Due to the low substrate thickness of just 150 µm, an operating voltage of 2 kVRMS is already sufficient enough for a stable plasma formation. The experiments show that the operated actuator was able to prevent the ice formation and first indications of a De-icing function were also found. Hence, we show that it is feasible to realize an anti-icing system with zirconia-based plasma actuators operated at lower voltages compared to conventional ones.}, language = {en} } @inproceedings{LindnerBerndtJungbaueretal., author = {Lindner, Matthias and Berndt, Dominik and Jungbauer, Bastian and Ehrlich, Ingo and Schreiner, Rupert and Pipa, Andrei V. and Hink, R{\"u}diger and Foest, R{\"u}diger and Brandenburg, Ronny and Max, Alexander and Caspari, Ralf}, title = {Fabrication, surface integration and testing of miniaturized dielectric barrier discharge plasma actuators for active flow control applications}, series = {AIAA Aviation 2019 Forum, 17-21 June 2019, Dallas, Texas}, booktitle = {AIAA Aviation 2019 Forum, 17-21 June 2019, Dallas, Texas}, doi = {10.2514/6.2019-2998}, language = {en} } @article{PongratzSchlampJungbaueretal., author = {Pongratz, Christian and Schlamp, Matthias and Jungbauer, Bastian and Ehrlich, Ingo and Petratos, P. and Mourtos, N.}, title = {Detection of Delamination Damages in Thin Composite Plates using Noncontact Measurement of Structural Dynamic Behavior}, series = {Athens Journal of Technology \& Engineering}, volume = {3}, journal = {Athens Journal of Technology \& Engineering}, number = {4}, doi = {10.30958/AJTE.3-4-3}, pages = {315 -- 331}, language = {en} }