Technology

Making smart materials smarter
Smarter Alloys’ proprietary Multiple Memory Material™ technology adds a powerful new dimension to the special properties of shape memory alloys: the ability to precisely control the pseudoelastic and shape memory effects.
Multiple Memory Material technology makes it possible to locally program any material properties into a single shape memory alloy. Multiple pseudoelastic stress plateaus can be programmed in a single geometric shape, the shape memory effect can be set to react at multiple temperatures, or both effects can be combined in a single device.
Multiple Memory Material technology works by locally setting the phase transformation temperature of the material. Through this, both the psuedoelastic and shape memory effect properties of the material can be controlled. The size of a programmed zone can be as small as a few micrometers (less than 0.001″) in any dimension, with each zone having a discrete transformation temperature. Multiple Memory Material technology can be applied to any size or shape device and is compatible with any material exhibiting the shape memory effect.
PseudoelasticityShape Memory EffectHybrid
Pseudoelasticity
Multiple Memory Material technology adds the ability to vary pseudoelastic properties across the geometry of a device. In effect, the stiffness of the material (pseudoelastic plateau stress) can be spatially programmed to meet the application specifications.

  • Multiple stiffness wires, springs, cylinders, beams, etc
  • Variable rate damping systems
  • more applications
Shape Memory Effect
With Multiple Memory Material technology, the local phase transformation temperature can be programmed in any region of a device. This allows for a virtually unlimited number of thermo-mechanical actuations to be programmed, each at a unique temperature.

Hybrid
Hybrid devices exhibit both pseudoelasticity and shape memory effect. Multiple Memory Material technology enables both of these effects to be demonstrated at the same time. Traditional SMA are limited to operating in one mode depending on the transformation temperature. The ability to operate in a hybrid mode opens up a new world of potential applications.

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About shape memory alloys (SMA)
Shape Memory Alloys (SMA) are a special type of material that exhibit two remarkable properties: pseudoelasticity and shape memory effect
How SMA work
SMA are metals that respond to the application of heat or stress. These external stimuli induce a change in the atomic structure of the material. The behaviour of the material depends on its state when the stimulus is applied. At lower temperatures, the material is pliant and can be deformed. Upon heating through a transition temperature, the material stiffens and returns to its original shape through a temperature induced phase change. At higher temperatures, deformation beyond a certain strain induces a reversible phase change allowing the material to be strained even further at a relatively constant stress.
Pseudoelasticity
Pseudoelasticity describes a reversible elastic response to an applied stress. A pseudoelastic material will return to its previous shape after the removal of even relatively high applied strains. This is a stress induced phase change.
Shape Memory Effect
Shape memory effect is the ability of the SMA to remember a pre-programmed shape. A SMA will return to its original shape after deformation through the application of heat. This is a temperature induced phase change, also known as thermo-mechanical actuation.
Smarter
Adds a new dimension to SMA devices, enabling smarter functions and new applications.
Lighter
Material that functions like a machine. Replace several motors, gears, springs and connectors with a single wire.
More reliable
Replace several moving parts, reducing the failure points and simplifying operation.
More efficient
Enables lighter devices and operates with very low power, or no power at all.