12 July 1999 Thermal deformation behavior of a NiTi actuated aluminum metal-matrix composite
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Abstract
The present work reports macroscopic thermal mechanical and in-situ neutron diffraction measurements from a 22.9 volume percent, 50.7 at percent Ni-Ti fiber actuated 6082-T6 aluminum matrix composite and 6082-T6 homogeneous aluminum control material subjected to an initial room temperature 4 percent tensile elongation and unloading process followed by a subsequent room temperature to 120 degrees C unconstrained heating process. During the unconstrained room temperature to 120 degrees C heating process, the composite exhibited a pronounced, nonlinear thermal contraction, while the homogeneous control exhibited the expected linear thermal expansion. The composite thermal compression was clearly the result of a powerful shape memory response in the NiTi fiber actuators.
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William D. Armstrong, Torben Lorentzen, "Thermal deformation behavior of a NiTi actuated aluminum metal-matrix composite", Proc. SPIE 3675, Smart Structures and Materials 1999: Smart Materials Technologies, (12 July 1999); doi: 10.1117/12.352801; https://doi.org/10.1117/12.352801
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KEYWORDS
Composites

Aluminum

Temperature metrology

Diffraction

Metals

Actuators

Shape memory alloys

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