Electro-bending characterization of adaptive 3D fiber reinforced plastics based on shape memory alloys

Abstract

The industrial importance of fiber reinforced plastics (FRPs) is growing steadily in recent years, which are mostly used in different niche products, has been growing steadily in recent years. The integration of sensors and actuators in FRP is potentially valuable for creating innovative applications and therefore the market acceptance of adaptive FRP is increasing. In particular, in the field of highly stressed FRP, structural integrated systems for continuous component parts monitoring play an important role. This presented work focuses on the electro-mechanical characterization of adaptive three-dimensional (3D)FRP with integrated textile-based actuators.Here, the friction spun hybrid yarn, consisting of shape memory alloy (SMA) in wire form as core, serves as an actuator. Because of the shape memory effect, the SMA-hybrid yarn returns to its original shape upon heating that also causes the deformation of adaptive 3D FRP. In order to investigate the influences of the deformation behavior of the adaptive 3D FRP, investigations in this research are varied according to the structural parameters such as radius of curvature of the adaptive 3D FRP, fabric types and number of layers of the fabric in the composite. Results show that reproducible deformations can be realized with adaptive 3D FRP and that structural parameters have a significant impact on the deformation capability.

Development of an adaptive morphing wing based on fiber-reinforced plastics and shape memory alloys

“…(Memry GmbH, Germany) was used. This binary alloy system was adopted because it covers a wide range of application requirements; subsequently, about 90% of SMA applications involve Ni-Ti [26,27]. The diameter, tensile strength, and elongation at break of the SMA were 0.305 mm, 1152.7 MPa, and 11.1%, respectively [28]; its material-specific temperatures are listed in Table 1 [29].…”

Development of shape memory alloy-based adaptive fiber-reinforced plastics by means of open reed weaving technology

“…The very first attempt at a textile-technical integration of SMAs into reinforcing fabrics by means of tailored fiber placement (TFP) technology was described by the authors. [30][31][32] In Ashir et al, 30 the development and electro-bending characterization of adaptive 3D FRPs were found, where SMAs were embroidered into the reinforcing fabrics. The use of TFP technology for the integration of SMA into the reinforcing fabric for the development of an adaptive hinged FRP was also described in other scientific literature.…”

Development and mechanical properties of adaptive fiber-reinforced plastics

“…The use of SMAs as actuators in FRPs, which aims at creating adaptable component parameters, has been a recent international research focus within the composite community [8–16]. Essential goals are the adjustment or control of the component shape, the variation of mechanical properties (such as rigidity) and active vibration dampening.…”

“…The advantage of integrating SMAs into reinforced fabrics in FRPs lies in the fact that they are commercially available in wire form with different diameters. In previous works [5,13–18] carried out by the authors, the modelling and simulation for the actuation behavior of SMAs in AFRPs as well as the development and electro-mechanical characterization of adaptive 3D FRPs were executed. In the case of these AFRPs, SMAs were integrated into reinforced fabrics using the tailored fiber placement method.…”