Energy-absorbent composites featuring embedded shape memory alloys

W. Zhang; M. Davis; Nikhil A. Koratkar

doi:10.1117/12.474997

11 July 2002 Energy-absorbent composites featuring embedded shape memory alloys

W. Zhang, M. Davis, Nikhil A. Koratkar

Proceedings Volume 4699, Smart Structures and Materials 2002: Active Materials: Behavior and Mechanics; (2002) https://doi.org/10.1117/12.474997
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

Shape Memory Alloy (SMA) wires, were integrated within E-glass composite beams. The fiber volume fraction of the SMA material was 10 percent. Several baseline beams were also fabricated. Both the baseline and SMA reinforced composite beams were tested to failure in tension. The SMA reinforced beams were tested in both the martensite phase (room temperature) as well as the austenite phase (75 deg C). The test results indicated that SMA reinforced composites can offer significant increase in the strain-energy absorption prior to failure thereby improving the fracture toughness and crashworthiness for such systems. Significant increase in damping was also observed for the SMA reinforced composite when the wires were transformed from the martensite to the austenite phase by resistive heating.

Citation Download Citation

W. Zhang, M. Davis, and Nikhil A. Koratkar "Energy-absorbent composites featuring embedded shape memory alloys", Proc. SPIE 4699, Smart Structures and Materials 2002: Active Materials: Behavior and Mechanics, (11 July 2002); https://doi.org/10.1117/12.474997

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