which contains carbon fiber. Carbon Fibre Reinforced Polymer (CFRP) composite have been widely used in various applications especially used in the fabrication of aerospace structures and formula one body structures. Because of their low density‚ high strength and rigidity‚ excellent resistances to impacting and corrosion‚ CFRPs are widely applicable in various important structural components. Other fibers like Kevlar‚ glass fibers‚ and aluminum may also be used along with carbon fibers. Carbon fiber reinforced
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aluminum are in many respects similar to those made of steel. However‚ because of their lower density‚ aluminum forms are lighter than steel Forms‚ and this is their primary advantage when compared to steel. As the strength of aluminum in handling‚ tension and compression is less than the strength of steel‚ it is necessary to use large sections. The formwork turns out to be economical if large numbers of reuses are made in construction. The major disadvantage of aluminum forms is that no changes can be
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Esophageal benign stricture is the pathological stricture caused by any disease in esophageal antrum. In addition‚ the external pressure of the mucosal ring and the mediastinal tissue can also cause esophageal stricture. Benign stricture of the esophagus (BSE) can severely reduce quality of life and cause major complications such as aspiration‚ weight loss and malnutrition [1]. Esophageal stent implantation has been widely used in clinical practice‚ and this surgical method effectively alleviates
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PrFan Blades Rolls Royce is unique for its patented manufacturing process of its hollow wide-chord titanium fan blades. To make these fan blades light and strong the fan blades are made from titanium 6-4 alloy with a hollow internal “Warren–Girder” structure. This is done using 2 processes namely Superplastic forming and Diffusion bonding. The manufacture process starts with 3 sheets of forged titanium. A material called stop-off is printed onto 2 of the sheets which will stop them from joining
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of equipment designed to undertake such measurements‚ (e.g. stiffness‚ strength‚ ductility and hardness). In this experiment performing a tensile testing that will implicates extending a material at a constant pace and measuring how the force differs with extension. The force and extension results gained‚ can be converted to stress and strain values according to the following equations: Tensile Stress: σ = F / A Tensile Strain: ε = ΔL / L Where these expressions stands for: σ: Stress (Pa)
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parameters on the shear-tensile strength of the welded joints of Inconel alloy 625 was investigated. Experimental study using full factorial design of the welding current‚ welding time‚ and electrode force parameters was conducted. In order to identify the influence of each parameter and their interaction a general linear model and a second order model using response surface method was developed. Nonlinear correlation was observed between the welding process parameters and spot weld strength based on the regression
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graphene‚ the material consists of a layer of graphite 50‚000 times thinner than a human hair with unique electronic properties. Graphene’s properties are remarkable. Impermeable to gas‚ strongest two dimensional material ever tested‚ with a tensile strength 200 times as great as that of steel‚ conducts heat better than any metal. Graphene’s has unusual electrical characteristics‚ esp. its ability to carry charge carriers at speeds dwarfing those possible in silicon that allow superfast switching
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ADVANTAGES AND DISADVANTAGES OF PRESTRESSED CONCRETE ADVANTAGES : Use of high strength concrete and freedom from cracks‚ in prestressed members‚ contribute to improved durability under aggressive environmental conditions. The use of high strength concrete and high tensile steel in prestressed concrete members results in lighter and slender members than could be possible by using reinforced concrete and Mild steel as reinforcement. In prestressed concrete‚ steel is no longer required for
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cold drawing or thermal gradients‚ as in quenching or welding. Up to 45% area reduction is employed in the manufacturing process of CDW tubes resulting in residual stresses in the tube. These can be tensile or compressive based on the type of cold work. Residual stress can affect the fatigue strength and fracture toughness of the material and can cause stress corrosion cracking and dimensional instability during further machining‚ welding and forming operations. Hence minimizing the unfavorable residual
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Abstract This experiment will explain what the Rockwell hardening test is and why it is used‚ how the experiment was conducted‚ data that was found‚ and the importance of testing the hardness of materials. This experiment explains and proves how the hardness of materials can be increased by alloying and heat treating. Intro – Rockwell Hardness Testing Soft and hard qualities exist in materials. In materials‚ hardness measures the ability of a material to resist scratching‚ indentation‚ or penetration
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