Based on modified porthole dies, continuous composite extrusion allows the manufacturing of shape memory alloy metal matrix composites (SMA-MMC). In order to extend the functionality of SMA-MMC, the present work shows a new actuator concept based on integrated NiTi wires within an aluminum matrix. Due to an eccentric positioning of the wires as well as a prestraining, a bending moment is generated within the profile when the temperature is increased to a critical value. Depending on the process parameters, the occurring bending moment is able to cause an elastic or elastic-plastic deformation of the profile or specimen.
Dahnke, C., Shapovalov, A., & Tekkaya, A. E. (2017). Thermally activated lightweight actuator based on hot extruded shape memory metal matrix composites (SMA-MMC). In Procedia Engineering (Vol. 207, pp. 1511–1516). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2017.10.1083