shape memory

shape memory,

property possessed by certain alloysalloy
[O. Fr.,=combine], substance with metallic properties that consists of a metal fused with one or more metals or nonmetals. Alloys may be a homogeneous solid solution, a heterogeneous mixture of tiny crystals, a true chemical compound, or a mixture of these.
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 that allows them to return, when heated, to their original shape after having been deformed. This effect results because, as the alloy is deformed, it undergoes a martensitic (or athermal) transformation—a solid-state transition that rapidly changes the crystalline structure of the alloy without thermal activation—that is readily reversed once an appropriate amount of heat is applied. Among the alloys are copper-aluminum-nickel, copper-zinc-aluminum, nickel-titanium, and iron-manganese-silicon. Applications of shape memory include heat-activated fasteners, switches, eyeglass frames, orthopedic devices, teeth braces, and blood clot filters.

shape memory

Changing shape from a rigid form to an elastic state when thermal energy is applied is called shape memory. When the thermal stimulus is removed, the material reverts back to its original rigid state without degradation, which is called superelasticity. See also: Smart materials
References in periodicals archive ?
Ted Ruppel will lead Innovative Medical Device Company Shape Memory Therapeutics
The researchers used smart shape memory polymers (SMPs) with the ability to remember one shape and change to another programmed shape when uniform heat is applied.
com adds Global Shape Memory Alloy Market Report 2015 industry research to the metals market intelligence collection of the materials and chemicals section of its online research reports library.
Shape memory polymers (SMPs) are stimuli-responsive materials (ref.
developed a method and apparatus for fabricating a composite part with shape memory polymer (SMP) tooling.
Prior Information Notice: Replacement of the third generation of artificial turf with PE monofilament shape memory height of 50 mm - the supply surface with associated structural modifications
Thermo-responsive shape memory polymers (SMPs) are polymeric smart materials that have the ability to recover from a deformed state (temporary shape) to their original (permanent) shape when subjected to a temperature change [17].
The ExoShape Femoral is an unrivaled device with the use of shape memory PEEK to provide effective soft-tissue graft compression and fixation as well as an easy insertion method," said John Uribe, M.
In this work, the initial configuration is created by 3D printing, and then the programmed action of the shape memory fibres creates time dependence of the configuration- the 4D aspect," Dunn, a former CU-Boulder mechanical engineering faculty member, said.
Twenty-one papers from the April 2013 symposium present recent research on welding, coating processes, evaluation of corrosion, durability of metallic systems, texture and microstructure evolution of special alloys, composites, adhesive bonding, and shape memory alloys.
The gizmo has been developed using advanced shape changing materials such as dielectric electro active polymers and shape memory alloys, and the concept of ' non- uniform rational Bsplines'.
Baker Hughes has announced the commercial launch of its GeoForm conformable sand management system with shape memory polymer (SMP) technology.