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Composite materials beneficial for aircraft designers or manufacturers
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There are various materials which can be used on aircrafts. Composite and alloy materials are the primary component used due to the ability to combine certain materials with different strengths together to create a composite or alloy. These have ultimate properties that are needed to create an aircraft to be used safely in application. Composites are used due to the extreme high strength to weight ratio, although using large amounts of metals can be strong, unlike composites this would be too heavy. Composites essentially are designed to create a lighter aircraft, which over a long period of time, would be more cost effective for company running the plane, due to fuel savings. Materials used in aircrafts, range from metal alloys such as Aluminium-lithium alloys and many more different aluminium alloys, for instance; 2024, 2090, each having desirable properties causing it to be used in industry. To Composites which can range from carbon composites to graphite, aramid, fibre glass. These can also be used together to create graphite-aramid, graphite-aramid-fibreglass, graphite-fibre gl...
We use metals to construct all kinds of structures, from bridges to skyscrapers to elevators. The strength as well as durability of materials that are crafted out of metal make the materials ideal not only for construction but also for many other applications.
GKN Aerospace has been a place of employment for me as an electrician for fifteen years. GKN’s business is in the designing and manufacturing of composite and metallic aero structures. These aero structures are then sold to a wide array of companies. Some of GKN’s customers are Boeing, Lockheed Martin, Airbus and many others. The aero structures are built and designed for use in military and commercial aircraft, aircraft-engines, guided missiles and space vehicles. GKN Aerospace has been in business for over one hundred years. In that time, not only has the process of the manufacturing changed, but also so has the knowledge and attention of the pollution and contaminants that are produced from said manufacturing.
Chemically all polymeric materials comprise of hydro-carbon chains and usually have high heat of combustion. When they are exposed to fire, they burn rapidly with the release of high amount of heat, flame and smoke. Similarly the natural fibers, wood flour, are highly combustible and burn rapidly. So for safely use of the composites materials they must have flame retardant properties as well.
The future of the aerospace industry will involve gradual changes in the near term, with the prospect of more radical shifts in the decades t...
Denture teeth can be made of acrylic poly(methyl methacrylate) (PMMA) or composite resins. PMMA is a polymer - a material made the from joining of methyl methacrylate monomers. Properties of PMMA include resistance to abrasion, chemical stability and a high boiling point. (Jun Shen et al. 2011). However, weak flexure and impact strength of PMMA are of concern as they account for denture failure. (Bolayir G, Boztug A and Soygun K. 2013). Composite denture teeth are made of a three distinct phases - filler, matrix and coupling agents. Out of the types of composite teeth available, nano-filled composite teeth are preferred. Composite teeth have a PMMA coating around the tooth and a high content of filler particles. This gives them strength, higher resistance to forces than acrylic teeth and provides compete polymerization due to the PMMA coating. (Anusavice, K. J., Phillips, R. W., Shen, C., & Rawls, H. R, 2012). If the interface between the PMMA denture base and PMMA or composite teeth was weak, the denture will not be able to sustain occlusal forces, making the base-teeth interface, an entity of significance.
(1) Plastic (2) Metals (3) Other natural materials such as stone, chalk, Shell, leather, cocoanut, wood etc.
When it comes to structural failure due to the collapse of a component, or a group of them, it refers to the deficiency of the part to withstand the stress of the workload for which it is designed. The components which an airplane is made of, are individually selected and thoroughly tested by manufacturers in such a way as to ensure safety standards of exceptional level.
A wide variety of coating alloys and wrought alloys can be prepared that give the metal greater strength, castability, or resistance to corrosion or high temperatures. Some new alloys can be used as armor plate for tanks, personnel carriers, and other military vehicles.
Dental composites, also known as "white fillings", are a group of restorative materials composed of a mixture of powdered glass and plastic resin regularly used in modern dentistry to resemble the appearance of the natural tooth. Acrylic resin was first introduced to the dental profession in the mid 1950s. Since their introduction, acrylic based materials have continued to play a pivotal role in restorative and prosthetic dentistry. After the introduction of the bisphenol A glycidyl methacrylate, or BIS-GMA, by Bowen in the early 1960s the potential application of resins has emerged. This composition and formulation possessed a higher molecular weight and therefore better mechanical properties and reduced polymerization shrinkage, the newer polymer offered potential for much greater applications that included anterior and posterior composite resin restorations, indirect inlays/onlays, pit and fissure sealants and more wear resistant denture teeth.
BIBLIOGRAPHY Advantages to Aluminum. http://www.kaiserextrusion.com/advantage.html. November 28, 2000. Aluminum Facts. http://www.epa.gov/seahome/housewaste/src/alum.htm. November,28 2000. Bowman, Kenneth A. World Book Encyclopedia. "Aluminum." Chicago: World Book, Inc., 1992. Cobb, Cathy. Creations of Fire. New York: Plenum Press, 1995 Geary, Don. The Welder's Bible. Pensilvania: Tab Books, 1993. Knapp PhD, Brian. Aluminum. Connecticut: Grolier, 1996. Newmark, Dr. Ann. Chemistry. London: Dorling Kindersley, 1993. Walker, John R. Modern Metalworking. Illinois: The Goodheart-Willcox Company, Inc., 1985.
Aviation industry deals with more than thousands of people and also spending millions of funds in order to meet the requirements, satisfy the necessities of people and to produce state-of-the-art aircraft. With its objective it is significant to consider the hazards involved and bring out an output with the least extent and under control risks to prevent any loss in terms of life and even profit.
Carbon-fiber-reinforced-polymer (CFRP) is a composite polymer made up of carbon fibers and a binding polymer. The binding polymer can be a thermoset resin or thermoplastic polymer(s). Examples of thermoplastic polymers that can bind with carbon fiber to make CFRP are polyester, nylon, or vinyl ester. A thermoset resin that can combine with the carbon fiber to make CFRP is epoxy. The combination of the carbon fibers and a thermoset resin or thermoplastic polymer producing CFRP results in a light weight fiber-reinforced plastic that is tremendously strong. Depending on the binding polymer, CFPRs have a wide range of applications and are used when a light weight material with high rigidity and strength are required.
The world’s major airlines normally employ large numbers of Boeing, Airbus and McDonnell Douglas for their fleets. Embraer and Bombardier aircraft are also part of major airlines though this is to a lesser extent. Bombardier produces jets and turboprop aircraft and counts American Airlines as one of its clients while Embraer serves about 30 airlines in mostly regional markets as of 2010. Boeing and Airbus are capable of long-range destinations, while McDonnel Douglas aircraft are for medium-range travel.
The future of passenger aircraft and their manufacture has an amazing outlook. Every year, the brightest minds in aviation compile the greatest technological advances towards creating the safest and most economical aircraft on the planet. No detail is over looked, and the bottom dollar is the controlling factor. From private aircraft to public aircraft, space exploration and beyond, the future is bright for the passenger aircraft market, and everyone who purchases air travel should be excited to see how the industry unfolds. Let's kick this off!
Metals are widely use in industrial, economic growth and most importantly our daily life. Metals can be found in our car (steel), cell phones (gold, tin), computers (mercury, lithium), electrical wires (copper) and soda can (aluminium). But what is the prime factor that really determines the quality of metals? I would say TOUGHNESS.