Smart Materials: An Overview of Shape Memory Alloys for the analysis of strength & resistance
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2014, Vol 2, Issue 12
Abstract
World is progressing in all spheres of life be it Science, art or Culture or any other field. The field of manufacturing which is highly monolithic & complicated has directed our need towards the materials that have the properties which can be manipulated as per our requirements. Smart materials are one of them. These materials are unique as they have the property of changing shape & size just by adding a bit of heat or are transformed quickly into solid from liquid when they are placed near a magnet. Smart Materials include wide range of materials like magneto-rheostatic materials, shape memory alloys (SMA’s), Electro-rheostatic materials, and piezoelectric materials. Shape memory alloys (SMA's) are those metals which generally portray two extremely unique properties first one is pseudo-elasticity (flexibility just like a rubber & under loading), and the other one being shape memory effect (This is the ability to be deformed drastically and then to regain its original shape by heating.).The above explained two properties can be discovered through the phase changes in solid state. The solid state phase change is an arrangement of molecules very closely so that the substance continues to be in solid. These phases which are generated in shape memory alloys are Marten site & Austenite. This particular paper is an analysis & study of shape memory Alloys & the materials, Alloys which are used in day to day life. Conclusion have been drawn out by taking the help of examples (like manufacturing of aircraft, human bone system & robotics)That other materials & alloys are far more inferior than shape memory alloys in terms of strength , resistance & compatibility with the surrounding environment. Lastly an idea is also generated about the use of SMA’s in mechanical coupling in order to make a powerful joint.
Authors and Affiliations
Ruchira srivastava
Keywords
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