Transcript Composites
What are composites? • Composite materials are composed of two or more constituents stuck together with an epoxy • These constituents have different physical and chemical properties that allow them to remain separate in the final structure • The constituents are layered on top of each other as shown above Why do we use composites? • Composites are used in the aerospace industry because they provide benefits that their substitute materials cannot. • The plane that uses composites the most in aerospace is the Boeing 787 Dreamliner. Boeing 787 Airbus’ use of composites Aircrafts built using composites % made from Composites Airbus A320 10% Airbus A380 25% Airbus A400 M 30-35% Airbus A350 53% Benefit to aerospace companies • The largest benefit of composite materials in aircraft structure is the light weight of the material. • Boeing 787 consumes 20% less fuel than the similar sized 767 Benefit to aerospace companies • Another benefit is the machining required to manufacture composite materials. • The machines are smaller and much cheaper than machines used to manufacture metal materials. Disadvantages of composites • The manufacturing process of composite materials has not been perfected. • The process of perfecting it is time inefficient because companies must perfect it with trial and error. Composites expanding to other industries • The new Lenovo laptop is structured with carbon composite materials Composites expanding to other industries • Composites are now being used in the new z06 Chevy Corvette • Composites make up the body and the hood. Web links efunda Composite Information Appropedia: Information about composites in the aerospace industry myyellowcoat: Nature of Composite Works cited • "EFunda: Introduction to Composite Materials." EFunda: The Ultimate Online Reference for Engineers. 2012. Web. 07 Nov 2012. <http://www.efunda.com/formulae/solid_mechanics/com posites/comp_intro.cfm>. • Hahn, Prof H.Thomas. " Journal of Composite Materials ." Jcm. SAGE Publications , 2012. Web. 08 Nov 2012. <http://jcm.sagepub.com>. • "Putting it together – the science and technology of composite materials - Academy of Science." Home Australian Academy of Science . 2000. Web. 11 Nov 2012. <http://www.science.org.au/nova/059/059key.html>.