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Stały URI dla kolekcjihttp://hdl.handle.net/11652/4411

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20222

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Autorsearch.filters.applied.operator.equals: search.filters.author.Häntzsche, EricMa przypisane plikisearch.filters.applied.operator.equals: Tak

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Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Flowable 2D textile structures for the production of thermoplastic 3D FRP parts with continuous fiber reinforcement between shell and rib
    (Wydawnictwo Politechniki Łódzkiej, 2022) Hellmann, Sven; Overberg, Matthias; Pham, Minh Quang; Häntzsche, Eric; Gereke, Thomas; Cherif, Chokri
    Nature shows evolutionary fiber-reinforced solutions, e.g. a peanut shell that enables a high stiffness with extremely low component masses by using complex shell and rib arrangements. Lightweight shellshaped components made of fiber-reinforced plastic (FRP) are often stiffened with ribs. In this work, a new method is proposed to produce directional fiber reinforcement in the transition area from shell to rib and within the rib by a direct thermal pressing process. Numerical calculations are initially used to demonstrate the potential of this type of structure. The source material is a flowable 2D textile hybrid structure consisting of continuous glass fibers and discontinuous recycled carbon fibers. The arrangement of the fibers leads to a defined flow movement of matrix and fibers and thus the production of a 3D FRP component with continuous fibers in the shell area and staple fiber-based reinforcement in the rib area and in between.
  • Pozycja
    Development of integrated in-Situ actuator networks for the realization of flexure hinges for highly deformable fiber-reinforced plastic composites
    (Wydawnictwo Politechniki Łódzkiej, 2022) Bollengier, Quentin; Rabe, David; Mersch, Johannes; Häntzsche, Eric; Nocke, Andreas; Cherif, Chokri
    In the course of promoting e-mobility, there is currently a high demand for functionalized fiberreinforced plastics (FRPs). In particular, adaptive FRPs with structurally integrated actuators have a high innovation potential, since conventional motion mechanisms are usually based on external kinematics with high energy consumption. Even though actuators based on shape memory alloy (SMA) can be easily processed by mean of textile techniques, only few studies use the weft-knitting technology for the realization of adaptive FRPs with integrated actuator networks. This study aims at the development of functionalized weft-knitted fabrics with integrated in-situ actuator networks for the realization of adaptive FRPs. Therefore, functionalized reinforcement fabrics with integrated SMA actuators were developed and produced by weft knitting. The production of the composite infused by means of a thermosetting resin system. Afterward, the functional properties of adaptive FRPs were characterized and evaluated. In summary, this study highlights the suitability of the weft-knitting technology for the integral manufacturing of functionalized reinforcement fabrics with integrated in-situ actuator networks for the realization of adaptive FRP composites.