Composites

 =Topic 4.7. Composites. =

 Composites are a **combination** of **two** or **more** materials bonded together to **improve** their mechanical, phyisical, chemical or electrical properties. Airbus is a company that uses lots of composites. The composites that they use help to improve the strength to weight ratios of the materials used in the manufacture of aircraft. Why do you think this is important?





New materials are being developed all the time. Some of these materials are called [|smart materials.] The smart materials that you need to know about are:

 ||
 * [|Magneto Rheostatic materials] || Electro Rheostatic materials. || [|Piezoelectric materials] || [|Shape memory alloys] ||
 * [[image:http://www.lord.com/Portals/0/MR/mr_animation2.gif width="175" height="131" align="left" caption="mr_animation2.gif"]] ||  Work similar to magneto rheostatic materials but they react to electricity. ||  [[image:http://www.cs.ualberta.ca/~database/MEMS/sma_mems/img/piezoeffect.jpg width="274" height="207"]] || 