@article{FrankoDuKallweitetal.2020,
  author    = {Franko, Josef and Du, Shengzhi and Kallweit, Stephan and Duelberg, Enno Sebastian and Engemann, Heiko},
  title     = {Design of a Multi-Robot System for Wind Turbine Maintenance},
  series = {Energies},
  volume    = {13},
  journal   = {Energies},
  number    = {10},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {1996-1073},
  doi       = {10.3390/en13102552},
  pages     = {Article 2552},
  year      = {2020},
  abstract  = {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.},
  language  = {en}
}
@article{FiedlerWollert1996,
  author    = {Fiedler, J{\"o}rg and Wollert, J{\"o}rg},
  title     = {Zeitmeister : Echtzeitbetriebssysteme f{\"u}r Mikrocontroller},
  series = {ELRAD : Magazin f{\"u}r Elektronik und technische Rechneranwendungen},
  journal   = {ELRAD : Magazin f{\"u}r Elektronik und technische Rechneranwendungen},
  number    = {2},
  issn      = {0170-1827},
  pages     = {55 -- 59},
  year      = {1996},
  language  = {de}
}
@article{FeldmannPakGessleretal.2008,
  author    = {Feldmann, Markus and Pak, Daniel and Geßler, Achim and Schleser, Markus},
  title     = {Entwicklung eines Bemessungsmodells f{\"u}r punktf{\"o}rmige Verbindungen textibewehrter Betonbauteile},
  series = {Bautechnik : Zeitschrift f{\"u}r den gesamten Ingenieurbau},
  volume    = {Bd. 85},
  journal   = {Bautechnik : Zeitschrift f{\"u}r den gesamten Ingenieurbau},
  number    = {2},
  issn      = {0005-6820, 0341-1052, 0932-6359, 0932-8351, 0932-8351},
  pages     = {143 -- 147},
  year      = {2008},
  language  = {de}
}
@article{FeldmannPakGessleretal.2006,
  author    = {Feldmann, Markus and Pak, Daniel and Geßler, Achim and Dilthey, Ulrich and Schleser, Markus},
  title     = {Bonded connections for textile reinforced concrete structures},
  series = {Cailiao-gongcheng = Journal of materials engineering},
  journal   = {Cailiao-gongcheng = Journal of materials engineering},
  number    = {Special iss.},
  issn      = {1001-4381},
  pages     = {123 -- 127},
  year      = {2006},
  language  = {en}
}
@article{FateriHoetterGebhardt2012,
  author    = {Fateri, Miranda and H{\"o}tter, Jan-Steffen and Gebhardt, Andreas},
  title     = {Experimental and Theoretical Investigation of Buckling Deformation of Fabricated Objects by Selective Laser Melting},
  series = {Physics Procedia},
  volume    = {39},
  journal   = {Physics Procedia},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1875-3892},
  doi       = {10.1016/j.phpro.2012.10.062},
  pages     = {464 -- 470},
  year      = {2012},
  abstract  = {Although Selective Laser Melting (SLM) process is an innovative manufacturing method, there are challenges such as inferior mechanical properties of fabricated objects. Regarding this, buckling deformation which is caused by thermal stress is one of the undesired mechanical properties which must be alleviated. As buckling deformation is more observable in hard to process materials, silver is selected to be studied theoretically and experimentally for this paper. Different scanning strategies are utilized and a Finite Element Method (FEM) is applied to calculate the temperature gradient in order to determine its effect on the buckling deformation of the objects from experiments.},
  language  = {en}
}
@article{FateriGebhardtThuemmleretal.2014,
  author    = {Fateri, Miranda and Gebhardt, Andreas and Th{\"u}mmler, Stefan and Thurn, Laura},
  title     = {Experimental investigation on selective laser melting of glass},
  series = {Physics procedia : 8th International Conference on Laser Assisted Net Shape Engineering LANE 2014},
  volume    = {56 (2014)},
  journal   = {Physics procedia : 8th International Conference on Laser Assisted Net Shape Engineering LANE 2014},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1875-3892 (E-Journal); 1875-3884 (Print)},
  doi       = {10.1016/j.phpro.2014.08.118},
  pages     = {357 -- 364},
  year      = {2014},
  language  = {en}
}
@article{FateriGebhardt2015,
  author    = {Fateri, Miranda and Gebhardt, Andreas},
  title     = {Additive manufactured mechanical disentanglement lock},
  series = {RTejournal - Forum f{\"u}r Rapid Technologie},
  volume    = {12},
  journal   = {RTejournal - Forum f{\"u}r Rapid Technologie},
  publisher = {Fachhochschule Aachen},
  address   = {Aachen},
  issn      = {1614-0923},
  url       = {http://nbn-resolving.de/urn:nbn:de:0009-2-42147},
  year      = {2015},
  language  = {en}
}
@article{FateriGebhardt2015,
  author    = {Fateri, Miranda and Gebhardt, Andreas},
  title     = {Selective Laser Melting of Soda-Lime Glass Powder},
  series = {International Journal of Applied Ceramic Technology},
  volume    = {12},
  journal   = {International Journal of Applied Ceramic Technology},
  number    = {1},
  publisher = {Wiley-Blackwell},
  address   = {Oxford},
  issn      = {1744-7402},
  doi       = {10.1111/ijac.12338},
  pages     = {53 -- 61},
  year      = {2015},
  language  = {en}
}
@article{FateriGebhardt2015,
  author    = {Fateri, Miranda and Gebhardt, Andreas},
  title     = {Process Parameters Development of Selective Laser Melting of Lunar Regolith for On-Site Manufacturing Applications},
  series = {International Journal of Applied Ceramic Technology},
  volume    = {12},
  journal   = {International Journal of Applied Ceramic Technology},
  number    = {1},
  publisher = {Wiley-Blackwell},
  address   = {Oxford},
  isbn      = {1744-7402},
  doi       = {10.1111/ijac.12326},
  pages     = {46 -- 52},
  year      = {2015},
  language  = {en}
}
@article{EnningZambouAbel2004,
  author    = {Enning, Manfred and Zambou, Nathan and Abel, Dirk},
  title     = {Nonlinear spacing control of following vehicles within platoon a controlled lagrangian approach / Zambou, Nathan ; Enning, Manfred ; Abel, Dirk},
  series = {NOLCOS, IFAC Symposium on Nonlinear Control Systems},
  journal   = {NOLCOS, IFAC Symposium on Nonlinear Control Systems},
  pages     = {1211 -- 1216},
  year      = {2004},
  language  = {en}
}