Development of integrated in-Situ actuator networks for the realization of flexure hinges for highly deformable fiber-reinforced plastic composites

Abstract

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.