smart+naterials+by+marwan+shokry

overview....

smart materials are newly discovered by materials by man and can do some more functions than other materials

first we should pass on the memory shaped alloys these alloys re made from materials such as ni and ti. the alloys ve the ability to returns to its std shape after being deformed in relative higer temperature.

this concept we can watch it in this video

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and after w know its concept we want to know how to use it this video shows a team of cambridge univ who make a wheel which kan rotate with no power only by heating the room this vechile will rotates as it is based o stretched springs which want to return to their std shpe though they stretched each other make them selve a mechanical energy turned into kinetic one

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these conept also used in the manufactoring process in medical tools as bandages .. in automotive cars in the springs of their chairs...

and the most important for u in the lane engines to reduce noise................

secondly we should talk about auxetic materials they ve some different strain than other materials

the recognized one as it can be bigger on stretching un recognizing the ohisical volume................

w can notice that phenoena in this video

media type="youtube" key="HJ1Ck6FIqwU" width="425" height="350" afte that w should talk about MR fluids this fluid can turn into a magnet as it is supported into magnetic field also it can turn the liqid of it into a more viscous one which can be used in many applications this magnetic fluid can be prepared in the lab simply with this video

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the most aero space usage is in the structure of the plane to absorb the collision of landing also in the ware of the astronauts

........ the last and not te ever last is the piezo electric materials

these materials ve the ability to make a potential difference between its molecules while loaded b a pressure ...these potential can generate electricity... we can use it in some electrical and electronical equipments

usage in the electronical sensors in speakers ..musical eqipment as guitar as drums

also in other mechanical machines refrences: youtube.com..... R. [|Piezo in space] wikipedia
 * 1) **[|^]** [|"Mechanical properties of magnetorheological fluids under squeeze-shear mode" by Wang, Hong-yun; Zheng, Hui-qiang; Li, Yong-xian; Lu, Shuang]
 * 2) ^ [|//**a**//] [|//**b**//] [|Shape Memory Materials], K Otsuka, CM Wayman, Cambridge University Press, 1999 [|ISBN 0521663849], [|Google Books]

marwan adel ali shokry

marwan shokry