TY - JOUR A1 - Kallweit, Stephan A1 - Kaminsky, R. A1 - Rossi, M. A1 - Morbiducci, U. T1 - 2D PIV Study of the flow downstream : Two prototypes of a ney monoleaflet artificial aortic heart valve prosthesis / Kaminsky, R. ; Kramm, K. ; Weber, H. J. ; Simons, A. P. ; Kallweit, S. ; Verdonck, P. R. JF - The International Journal of Artificial Organs. 28 (2005), H. 9 Y1 - 2005 SN - 1724-6040 N1 - Abstracts: XXXII Annual ESAO Congress, 5-8 October 2005, Bologna - Italy SP - 921 ER - TY - JOUR A1 - Kallweit, Stephan A1 - Kaminsky, R. A1 - Rossi, M. A1 - Morbiducci, U. T1 - 3D PIV measurements of prosthetic heart valve dynamics / Kaminsky, R. ; Rossi, M. ; Morbiducci, U. ; Scalise, L. ; Castellini, P. ; Kallweit, S. ; Verdonck, P. ; Grigioni, M. JF - The International Journal of Artificial Organs. 28 (2005), H. 9 Y1 - 2005 SN - 1724-6040 N1 - Abstracts: XXXII Annual ESAO Congress, 5-8 October 2005, Bologna - Italy SP - 868 ER - TY - JOUR A1 - Kallweit, Stephan A1 - Abromeit, W. A1 - Dues, M. A1 - Siekmann, H. T1 - Anwendung der LDA zur Untersuchung der instationären Strömung im Nachleitrad einer axialen Kreiselpumpenstufe / Abromeit, W. ; Dues, M. ; Siekmann, H. ; Kallweit, S. JF - Lasermethoden in der Strömungsmesstechnik, 3. Fachtagung der Deutschen Gesellschaft für Laser-Anemometrie (GALA), Bremen, DE, 5.-7. Sep, 1994 Y1 - 1994 SN - 3-8265-0162-4 N1 - Lasermethoden in der Strömungsmesstechnik, Fachtagung, 3 SP - 27.1 EP - 27.6 PB - Shaker CY - Aachen ER - TY - JOUR A1 - Kallweit, Stephan A1 - Ebinger, G. A1 - Dues, M. A1 - Siekmann, H. T1 - Anwendung des Laserlichtschnitt-Verfahrens zur qualitativen Untersuchung der Durchströmung von Kreiselpumpen / Ebinger, G. ; Kallweit, S. ; Dues, M. ; Siekmann, H. JF - Lasermethoden in der Strömungsmesstechnik, 2. Fachtagung der Deutschen Gesellschaft für Laser-Anemometrie (GALA), PTB Braunschweig, DE, 14.-16. Sep, 1993 Y1 - 1993 SN - 3-86111-595-6 N1 - Lasermethoden in der Strömungsmesstechnik, Fachtagung, 2 SP - 37.1 EP - 37.4 PB - Shaker CY - Aachen ER - TY - JOUR A1 - Franko, Josef A1 - Du, Shengzhi A1 - Kallweit, Stephan A1 - Duelberg, Enno Sebastian A1 - Engemann, Heiko T1 - Design of a Multi-Robot System for Wind Turbine Maintenance JF - Energies N2 - The maintenance of wind turbines is of growing importance considering the transition to renewable energy. This paper presents a multi-robot-approach for automated wind turbine maintenance including a novel climbing robot. Currently, wind turbine maintenance remains a manual task, which is monotonous, dangerous, and also physically demanding due to the large scale of wind turbines. Technical climbers are required to work at significant heights, even in bad weather conditions. Furthermore, a skilled labor force with sufficient knowledge in repairing fiber composite material is rare. Autonomous mobile systems enable the digitization of the maintenance process. They can be designed for weather-independent operations. This work contributes to the development and experimental validation of a maintenance system consisting of multiple robotic platforms for a variety of tasks, such as wind turbine tower and rotor blade service. In this work, multicopters with vision and LiDAR sensors for global inspection are used to guide slower climbing robots. Light-weight magnetic climbers with surface contact were used to analyze structure parts with non-destructive inspection methods and to locally repair smaller defects. Localization was enabled by adapting odometry for conical-shaped surfaces considering additional navigation sensors. Magnets were suitable for steel towers to clamp onto the surface. A friction-based climbing ring robot (SMART— Scanning, Monitoring, Analyzing, Repair and Transportation) completed the set-up for higher payload. The maintenance period could be extended by using weather-proofed maintenance robots. The multi-robot-system was running the Robot Operating System (ROS). Additionally, first steps towards machine learning would enable maintenance staff to use pattern classification for fault diagnosis in order to operate safely from the ground in the future. Y1 - 2020 U6 - http://dx.doi.org/10.3390/en13102552 SN - 1996-1073 VL - 13 IS - 10 SP - Article 2552 PB - MDPI CY - Basel ER - TY - JOUR A1 - Kallweit, Stephan A1 - Dues, Michael A1 - Müller, Ulli A1 - Lederer, Thomas T1 - Einsatz der Particle Image Velocimetry zur Untersuchung von Rohrströmungen / Kallweit, Stephan ; Dues, Michael ; Müller, Ulli ; Lederer, Thomas ; Schroll, Michael ; Willert, Christian JF - Lasermethoden in der Strömungsmesstechnik: 15. Fachtagung 2007 Rostock / Hrsg.: Alfred Leder .... Y1 - 2007 SN - 978-3-86009-007-7 N1 - Deutsche Gesellschaft für Laser-Anemometrie ; Fachtagung Lasermethoden in der Strömungsmesstechnik <15, 2007, Rostock> SP - 35 ER - TY - JOUR A1 - Kallweit, Stephan A1 - Uchiyama, R. A1 - Siekmann, H. T1 - Fault Diagnostic Method for Pump Running Conditions Based on Process Modeling and Neural Network / Uchiyama, R. ; Kallweit, S. ; Siekmann, H. JF - International Journal of Rotating Machinery. 4 (1998), H. 1 Y1 - 1998 SN - 1542-3034 SP - 49 EP - 59 ER - TY - JOUR A1 - Dues, M. A1 - Gebhardt, Andreas A1 - Kallweit, Stephan A1 - Scheffler, T. A1 - Siekmann, H. A1 - Uchiyama, T. T1 - Flow Visualization in a Cavitating Flow JF - Proceedings of the German-Japanese Symposium on Multi-Phase Flow : Karlsruhe, Germany, August 23 - 25, 1994 / comp. by U. Müller ... Y1 - 1994 N1 - German Japanese Symposium on Multi-Phase Flow <1994, Karlsruhe> ; Kernforschungszentrum Karlsruhe ; 5389 SP - 391 EP - 402 PB - Kernforschungszentrum Karlsruhe CY - Karlsruhe ER - TY - JOUR A1 - Kallweit, Stephan A1 - Kaminsky, R. A1 - Canneyt, C. van A1 - Eloot, S. T1 - High-Speed und Stereo-PIV in einem künstlichen Blutgefäß / Kallweit, S. ; Kaminsky, R. ; Canneyt, C. van ; Eloot, S. JF - Lasermethoden in der Strömungsmesstechnik: 15. Fachtagung 2007 Rostock / Hrsg.: Alfred Leder .... Y1 - 2007 SN - 978-3-86009-007-7 N1 - Deutsche Gesellschaft für Laser-Anemometrie ; Fachtagung Lasermethoden in der Strömungsmesstechnik <15, 2007, Rostock> SP - 48 ER - TY - JOUR A1 - Kallweit, Stephan A1 - Kisife, F. A1 - Utzenrad, M. A1 - Weber, J. T1 - Hispeed Scanning Stereo PIV hinter einer künstlichen Herzklappe / Kallweit, S. ; Kisife, F. ; Utzenrad, M. ; Weber, J. JF - Lasermethoden in der Strömungsmesstechnik : 16. Fachtagung, 9. - 11. September 2008, Karlsruhe / veranst. von der Deutschen Gesellschaft für Laser-Anemometrie GALA e.V. Hrsg.: B. Ruck Y1 - 2008 SN - 978-3-9805613-4-1 N1 - Fachtagung Lasermethoden in der Strömungsmesstechnik ; (16, 2008, Karlsruhe) ; Deutsche Gesellschaft für Laser-Anemometrie SP - 29 PB - GALA e.V. CY - Karlsruhe ER -