Development of adaptive pleated woven fabrics with shape memory alloys

Journal of Industrial Textiles

Hindahl

Nocke

et al. 2019

Self Cite

The process of integrating smart materials into fiber-reinforced plastics has been used increasingly to create different high-performance products for lightweight applications. This paper presents the development of an adaptive morphing wing based on fiber-reinforced plastics with shape memory alloys integrated into the reinforcing fabrics. Two types of preforms with varying numbers of integrated weft yarns in shape memory alloys were manufactured for a wing structure on a weaving machine using the pleated woven fabric technology. Subsequently, the realized preforms were infiltrated by a thermoset matrix and characterized mechanically to derive a preferred variant. After developing the adaptive morphing wing, its deformation behavior was characterized by varying current flow and time through shape memory alloys. Results revealed that maximum deformation of the investigated adaptive morphing wing was achieved at a current flow and time of 1 A and 60 s, respectively.

Section: Weavingmentioning

confidence: 99%

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

Journal of Industrial Textiles

Hindahl

Nocke

et al. 2019

Self Cite

“…In this case, the SMA that was interlaced with the reinforcing fabrics was either interlaced with the warp 33 or weft yarns. [34][35][36][37] However, for diverse application-related scenarios, the complex movement of the actuator network in the adaptive FRP is necessary. Such types of structures can be achieved either TFP technology with two-step process or ORW technology with single-step process, where the resultant maximum deformation of the adaptive structures produced by ORW technology is higher than those produced by TFP technology.…”

Section: Introductionmentioning

confidence: 99%

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

Journal of Reinforced Plastics and Composites

Cherif

2020

Self Cite

The functionalization of fiber-reinforced plastics has been improved continuously in recent years in order to broaden their application potential. By using shape memory alloys in fiber-reinforced plastics, adaptive fiber-reinforced plastics can be developed, which in turn can change their shape depending on the activation of shape memory alloys. In order to ensure the proper force transmission from shape memory alloys to fiber-reinforced plastic, these shape memory alloys need to be integrated into the reinforcing fabric. Hence, this paper presents the application of open reed weaving technology for the development of functionalized preforms for adaptive fiber-reinforced plastics. For an optimized shape memory effect during their thermal induced activation, the shape memory alloys were coated with release agent and then integrated into the woven fabric by open reed weaving technology. The hinged width of functionalized preforms was varied from 50 mm to 150 mm. These preforms were infused by a thermosetting resin matrix system with a modifier. Subsequently, the electro-mechanical testing of adaptive fiber-reinforced plastics was executed. Results show that the maximum deformation of adaptive fiber-reinforced plastics was proportional to their hinged width.

“…It was shown by the authors that, by using weaving technology for the integration of SMAs into reinforcing fabrics, the required process steps can be reduced from two to one, and full process automation was achieved, whereby the characterization of samples was performed at constant electrical power and time. 28–32 To customize the deformation behavior, the specific voltage and time values at which the optimum deformation of adaptive FRPs occurs are essential.…”

Section: Introductionmentioning

confidence: 99%

Activation time- and electrical power-dependent deformation behavior of adaptive fiber-reinforced plastics

Journal of Composite Materials

2019

Self Cite

There is considerable need for research into the application potential of adaptive fiber-reinforced plastics based on shape memory alloys, in particular with regard to industry-specific solutions. Hence, this paper presents the activation time- and voltage amplitude-dependent deformation behavior of adaptive fiber-reinforced plastics incorporating shape memory alloy. In order to attain this goal, shape memory alloy was textile-technically converted into shape memory alloy hybrid yarn using the friction spinning technology. Subsequently, the manufactured hybrid yarn was integrated into the reinforcing fabric in the warp direction using weaving technology. To increase the deformation potential of the adaptive fiber-reinforced plastic, a hinged woven fabric was developed by floating of the warp yarn. The functionalized preform was infused by the Seemann Corporation Resin Infusion Molding Process. Later, an extensive electro-mechanical characterization of the adaptive fiber-reinforced plastic by varying electrical power resulting from the varying voltage amplitude and activation time was completed. The maximum deformation of adaptive fiber-reinforced plastics was achieved at an electrical power of 95 W (50 V/1.9 A) and 60 s of thermal induced activation.