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Engineering Materials to be used for Barbecues and Laptop Casing - Essay Example

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This assignment entails finding a range of engineering materials that could be used for the main body of the barbecues alongside the procedure used, finding a range of engineering materials that could be used for the casing of the laptop and selecting the most suitable one…
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Engineering Materials to be used for Barbecues and Laptop Casing
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Engineering Materials to be used for Barbecues and Laptop Casing Barbecue is a method and apparatus used for cooking poultry, fish, and occasionally meat using the hot coals of charcoal, smoking wood, compressed wood pellets, and hot smoke of a fire (John, K, 2011). Typically, grilling means the act of cooking in this manner but quickly. Barbecue, on the other hand, is a much slower method that utilizes less heat compared to grilling. It is attended to for over a period extending for several hours. This assignment entails finding a range of engineering materials that could be used for the main body of the barbecues alongside the procedure used, finding a range of engineering materials that could be used for the casing of the laptop and selecting the most suitable one followed by describing the criteria used while taking into account the design, cost and availability criteria. Finally, the assignment entails justifying the choice of material, giving reasons why other materials initially considered were not selected. Task1 The modern versions have many design features. The success of each design depends on engineers and designers with a clear understanding of the material, coatings, as well as the needs of the environment through which the products are used (John, K. 2011). The barbecue has many products, and it is composed of a series of separate components requiring careful designing. The material and procedure required in designing the barbecues with one part made of liquefied petroleum gas (LPG) grill, and the other part made of traditional charcoal burner include cold pressing, cold forging, quality control, forming, hole punching, welding, Ceramic coating, Aluminium, cast iron, Welding, Embossing, Enamel, Nylon Handles, stainless, propane, charcoal, Nylon Handles, Hardwood handles, Regulators (John, K, 2011). The materials were chosen because of their variety of characteristics suitable for the model of the barbecue. Heavy-gauge steel charcoal and the cooking grates are made in order to withstand many years of use, as well as to make the customers satisfied. The cooking grates are often multi-plated. These makes them to be easier to maintain and rust-resistant. Robot Welders are used in making strong, accurate welds in areas such as leg joints, grate supports and steel handles. Welding helps in making sure that Barbecues become long lasting since it includes the grease which is present in BBQ cooking and helps in reducing the areas for collecting moisture. For BBQ wheel manufacturing, nylon is often used since it has suitable heat resistant properties and it is also used for ordinary bearing because of it having a property of resistance heat and grease. Nylon is also tough and durable (John, K, 2011). Task 2. There are different types of engineering materials that can be used for the casing of the laptops. In most cases, the materials used to make laptop casing include Leather, cloth, plastic and neoprene (John, K, 2011). Engineers prefer plastic material because it is remarkably easy to shape and exceptionally light. In this respect, there are a number of plastic materials that can be used for a laptop casing. These include carbon fiber, ABS engineering plastics, and polycarbonate (John, K, 2011). Carbon fiber is a strong reinforced fiber polymer. It contains fibers of diameter approximately 5-10um. It contains mostly atoms of carbon. These atoms bond with each other to form crystals that align themselves parallel to the fiber. This alignment gives it a high strength in comparison to its volume ratio. Carbon properties like high tensile, high stiffness, high chemical resistance, low weight, low thermal expansion, and high tolerance of temperature is contained in a carbon fiber making it be particularly useful in making laptop casing (John, K, 2011). However, carbon fiber is extraordinarily expensive if it is compared to other fibers such as glass. ABS engineering plastics are plastic materials that have thermal and mechanical properties. This property makes these materials to be superior to the common plastics that are normally used (commodity plastics). This material is equally frightfully expensive in terms of the price per unit weight. ABS plastics have properties like high impact resistance, high heat resistance, rigidity, mechanical strength, flame redundancy, and chemical stability. Polycarbonate is polymer that contains a group of carbonate (-0-(C=0)-0-). This material is derived from monomers that are rigid. Its properties include impact resistance, optical properties, and temperature resistance. These properties make polycarbonate be placed between engineering plastics and the commodity plastics. This material is given out through reacting phosgene and bisphenol A. Leather, on the other hand, is a material that is obtained from animal hides. This material is durable if compared to other materials. The colors of leather material may vary depending on the brand of laptop. The material comes in many versions and the cheap quality could be confused with the fake leather versions. Despite this, the durability of cheap leather is preferred to the common fake one. Fake leather is another form of leather that can be used to make laptop casing. This material may sometimes be referred to as pleather since they are PVC based or plastic. Each brand has its own quality of plastic thus affecting its durability, water resistance, and quality. This material is lighter than the products of leather. Neopene is a material that is seen as the sleeves of the laptop. This material provides some padding to the laptop because it keeps some moisture of the laptop. Cloth as another material for laptop casing is obtained from sources that are not human made. It consist fabrics like cotton. Its coating can be use to give out water resistance. From the discussion of the engineering materials that are used for laptop casing, the most suitable one is the ABS engineering plastic. This is because the ABS plastic engineering material is extremely attractive. Its thermal conductivity is better compared to that of other materials. The criteria of choosing this material include determination of the use of the material, determining the needed protection since it will be used by children, and ensuring that the positive benefits outnumber the negative impacts of the material to be used for case. Considering this criteria, ABS engineering plastic material was the only material that fulfilled all the steps. Task 3 In consideration of task 2, the material most suitable for laptop casing is ABS engineering plastic. The choice of the ABS engineering plastic is based on varied properties of the material that makes it most suitable for making laptop casing. First, the ABS engineering plastic is plastic alloy. This is advantageous because of the low cost of ABS plastics, which is an alloy of polycarbonate and Acrylonitrile Butadiene Styren (John, K, 2011). Secondly, BS plastics compounds have superior heat resistance property resistance. Its impact and weather resistant property helps in retaining its shape extremely well. Thirdly, the ABS plastics have other properties, which include timely processing, impact resistance, as well as the dimension stability ABS resins liquid. The shape used is, therefore, thin-walled and complex products to help maintain excellent performance, and maintaining an ester with composition of the plastic materials formability. Most notebooks manufacturers welcome ABS engineering plastic because of their low costs. So far, many of the laptops are often based on the raw materials of ABS engineering plastics, and this is not to be exceptional. One demerit of ABS plastic, however, is that it has rather poor thermal conductivity, thus undeniably heavy. However, in this case, its positives tend to overcome the negatives due to the low cost that is associated with using the ABS engineering plastics. This makes the ABS engineering plastic the most popular material among many laptop computer manufacturers. The other material that could have been used in place of ABS plastics is the Carbon fiber. However, it was not chosen for because it is known to have some demerits. First, it is more difficult to form than the ABS plastics. Secondly, due to the difficulties that are associated with the carbon fiber use in manufacturing, the incorporation of carbon fiber in laptop computer shells can double the cost of the device made. This would go a long way in making the rental more expensive. ABC engineering material has a performance that is advanced. It has a performance of about 1000 which is a blending of Type V steel fiber, and a mono-pro micro synthetic fiber. Mono-pro is one reinforced fiber with exceedingly superior plastic crack shrinkage. It is a crack reinforcement in people’s residential and also in on ground commercial slabs. This product has been listed in ICCESESR as a product meeting the properties for a casing of any laptop. Type V steel-pro is a product that is a product that also meets the set requirements for a material for a laptop casing. A combination of steel fiber and the mono-pro fibber makes the ABC engineering to a material that is durable thus its improved performance. Its performance can be measured in terms of its impact resistance; reduced permeability, surface abrasion resistance, fatigue strength, and a volume that is reduced because of its variations in temperature, and moisture. The advanced performance design requires that the mixture of its components to be fabricated in a laboratory so as to make sure that there exist enough motors for coating the aggregate with the fiber of the surface area. References John, K., 2011. Design-Technology. Retrieved on 15th June 2012 from www.design-technology.information. Read More
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