Composite materials

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    The Aerospace Industry

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    industry to improve material performance and the efficiency of their transportation.2 Classically aircraft were constructed from metallic materials such as aluminium and titanium. Therefore, new materials must have specific properties and characteristics that the metallic materials possess, but in addition, present further beneficial properties. Aeronautical materials must possess a high Young’s modulus to prevent shape deformation under stress, high resistance to chemical and thermal degradation, high glass transition temperature (Tg), impact strength, amongst numerous others which are more task specific.3 Advancements in polymer chemistry have resulted in a large number of aircraft moving from metallic materials to composite for their primary structures. The definition of a composite states that it is a new material with superior structural properties, which is formed from two or more materials that differ in physical and mechanical behaviour.…

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    The significance is that a correlation needs to be developed to facilitate the introduction of FRP as new materials in the construction of infrastructure. This leads to increase the bond strength of the concrete and steel used in any structural components. Also, the paper will present the comparison of results obtained by different researchers and helps the civil engineer to increase strength and safety of the structure. During the seismic loading, the structural component becomes more critical…

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    Terrazzo, composites, and concrete are all materials that can be used in the interior of a space. In this paper, I am going to explain the similarities and differences between concrete and terrazzo, what each material is composed of, how these materials are used, and the different subcategories of each material. I’m also going to discuss how each material can be altered, in terms of the look and feel of it. Composite flooring is composed of aggregate and a binder, also known as the matrix. The…

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    Cellulose Case Study

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    Extracellular or bacterial cellulose (BC) synthesized by nonpathogenic aerobic bacteria in a culture medium containing carbon and nitrogen sources can be promising biodegradable nanofibers for composite materials because of their excellent mechanical properties [1]. Although BC is chemically identical to plant-based cellulose, it exists in extremely pure form and does not contain any hemicellulose, lignin, pectin or wax materials [2]. In addition, it has higher crystallinity, degree of…

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    GFRP Composites

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    Machining of GFRP laminate materials is difficult due to their anisotropic and non homogeneity in nature which consist of distinctly different phases, their response to machining. Machining of composite materials is rarely avoided in view of losing the strength of components due to interlayer fracture and delamination damage. In specific situations where metal inserts are inevitable in case of joining or affixing with other mating part, in this situation milling and drilling operations can’t be…

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    some metals. 4.0.4 Fibreglass Composites - This material combines the resilience, stiffness, flexibility and strength. The resulting material is very lightweight, fairly…

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    Some of them are briefly discussed below: • Low cost: The fabrication procedures involved in the Vacuum assisted resin infusion process use relatively low cost equipment for the quality of composite manufactured. • High performance light weight laminates manufactured through this process are comparable to other more expensive manufacturing methods such as Autoclave. • Ability of the reinforcements to be handled in dry state leading to reduced exposure to resin. The laminators are thus in less…

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    Knee Wraps: The Benefits and Drawbacks What are knee wraps? The knee wrap is similar to the wrist wrap regarding the logic that applies to both. Knee wraps are also to an “Ace” bandage, except that they are much thicker and stronger. The elastic material that is used to make the knee wrap is the same found in wrist wraps. The allowed width for knee wraps is 8 cm (3 inches), although they can sometimes be 2.0 meter, 2.5 meters or even 3.5 meters long. Advantages of using knee wraps The primary…

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    some fiber ends woven into the fabric. In contrast, the long strands in bamboo sheets are stretched across the entire length of the sheet. As a result, bamboo sheets don’t have any rough ends woven into the fabric making them smooth as silk. Luxurious Lastly, both Egyptian cotton and bamboo sheets are unbelievably luxurious. After learning about their soft and smooth textures, it’s easy to see why Egyptian cotton and bamboo sheets are so highly valued. However, while their soft, smooth textures…

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    Hydraulic Fracking

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    (Phenolic resins, Epoxy resins, Polyesters and Polyurethanes) are materials which make up the objects which we use in our everyday lives such as phones, cars, cooking utensils, computers and shoes, (http://www.slideshare.net). Plastics are a group of material which can either be synthetic or naturally occurring. Plastics are considered as polymers a substance which has a molecular structure with a large number of units bonded together, (http://www.chemheritage.org). Most plastics are made from…

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