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(SMA's)
are a unique class of alloys which are able to "remember" their
shape and are able to return to that shape even after being bent. The ability
is known as the shape memory effect. ... This property has lead to many uses
of SMA from orthodontics and coffee makers to methods of controlling aircraft
and protecting buildings from earthquake damage. ... The first SMA to be
discovered and the most commonly used is called Nitinol. [Texas A&M SMART lab] See also Introduction to Shape Memory and
Superelasticity and Shape Memory Alloy Database
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