Introduction and applications of shape memory alloy

Nowadays, smart behaviors of materials are noticed more than at any time in the history of material science.A material is considered to be smart if at least it shows a reaction in form of a change in color, shape, size, sound, electricpulse, and other forms of diagnosable changes. These changes are since something has been changed in its circumstance;therefore, it will comprehend its surroundings. Shape memory alloy (SMA) is a type of smart material that in the properconditions shows a contracting reaction as a response to temperature rise. If this reaction is managed properly, it couldbe a beneficial capability to use for many tasks. The present paper is an introduction to the history of SMA that in mostcases considered as Nitinol and a review of its vast applications. The present research discusses the capabilities of thismaterial, especially in comparison to traditional materials.