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    Item type:Publication, Access status: without files ,
    Automated Grinding for Surface Defect Removal on Aircraft Components
    (2023-09)
    Kähler, Falko
    ;
    Masekowsky, Sören
    ;
    Schüppstuhl, Thorsten
    Aircraft maintenance, repair and overhaul (MRO) processes include manual grinding of defects on complex surfaces, with the removal depth being critical for component re-use. The defect depth is not determined prior, resulting in a careful, time-consuming and tedious manual grinding task and limited productivity. In this paper, a robotic system for automated defect removal is proposed to face challenges of individual path planning, comply to removal specifications and detect defect removal endpoint. The system is demonstrated, first results for machining on a cylindrical surface are presented and analyzed before future work including optimizations are discussed.
    Publicationtype: Conference Paper
      39
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    Item type:Publication, Access status: without files ,
    A Robotic Printer for Nonplanar Additive Manufacturing of Carbon Fiber Reinforced Polymers
    (2023)
    Kipping, Johann
    ;
    Nettig, Doran
    ;
    Kállai, Zsolt
    ;
    Schüppstuhl, Thorsten
    With their superior stiffness and strength, carbon fiber reinforced polymers have emerged as a promising material class for lightweight construction. Their strong inherent anisotropic properties make the placement and orientation of the single fibers key in realizing the full potential of this material. As classical methods struggle to achieve this fiber steering, require expensive molds to be manufactured and are limited by geometrically complex parts, fused deposition modeling shows great potential for offering a solution to these problems. This additive manufacturing method allows the use of nonplanar slicing, which is essential for following the out-of-plane directions of optimal material orientation. Many previous approaches for printing carbon fiber reinforced polymers employ industrial robots in different configurations for realizing this process. As the printing system is crucial in enabling multi-axis manufacturing, this work aims to provide a methodological evaluation of possible printing systems for this application. The evaluation is then applied in the conceptualization and design of a robotic printer for the manufacturing of small volumetric parts.
    Publicationtype: Conference Paper
      48