Thermally activated lightweight actuator based on hot extruded shape memory metal matrix composites (SMA-MMC). (2017)

• Record Type: Journal Article
• Authors: Dahnke, Christoph; Shapovalov, André; Tekkaya, A. Erman
• Is Part Of: Procedia engineering. Volume 207(2017)
• Page Start: 1511
• Page End: 1516
• Publication Date: 2017
• Subjects: Extrusion -- composite -- shape memory alloy; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.10.1083
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: 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.