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Ferromagnetic Shape Memory Alloys
CIMS' main focus in the
SMA area is the development of fast responsive Ferromagnetic
SMA's with an emphasis on polycrystalline FePd system. The
actuation mechanism that we use is "hybrid mechanism",
which is a combination of applied magnetic field, and its
gradient, magnetic force, stress-induced martensite transformation
(SIM), stiffness change from stiff (austenite) to soft (martensite).
Polycrystalline FePd based actuators have strong force capability,
while inducing reasonably large strain by SIM, yet the material
can be shaped into any three-dimensional shape as this is
ductile alloy, thus it can sustain high tensile, compressive
and shear stress. The strain induced is reversible upon on
and off the applied magnetic field (and its gradient).
- Ferromagnetic SMA (FSMA): background
- Possible magnetic field driving mechanisms
for FSMA actuators
- Comparisons of magnetic field driving
mechanisms
- Hybrid Mechanism and Demonstration
- Material characterizations of polycrystalline
FePd
- Advantage of FePd: Shaping into various
shapes
- FePd (thin) spring actuator
- Compliant Surface Robot
- Design of ferromagnetic shape memory
alloy composite made of Fe and TiNi particles
- Model calculation of 3D-phase transformation diagram
of ferromagnetic shape memory alloys
- Design of Ferromagnetic Shape Memory Alloy Composites
- Finite Element Modeling of
Magneto-superelastic Behavior of Ferromagnetic Shape Memory Alloy Helical Springs
- Finite element analysis of superelastic, large
deformation behavior of shape memory alloy helical springs
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