Scaled Composites

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    Virginia Commonwealth State Agency-Northrop Grumman Critical System Outage The commonwealth of Virginia experienced an information technology storage area network outage on August 25th 2010. This affected several agencies and caused 13% of the file servers to fail. The failure mainly impacted the Department of Motor Vehicles and Department of taxation. Because of the outage problem, DMV couldn’t process driver’s licenses and couldn’t share data with other agencies. (1) DMV has been unable to process in-person driver’s licenses or ID cards at its 74 customer service centers. The root cause of the failure was identified as the memory card of the EMC DMX-3 SAN array. Even though the primary cause of the failure was the SAN array, the database backup unavailability put the agencies out of service. Manufactures of the storage system claimed failure of SAN EMC DMX-3 is due to the memory card failure and the problem SAN failure was unprecedented. DMV ended up compensating for 1069 hours for 8 days of outage. Due to the outage, DMV has to work overtime on the Labor Day weekend and it costed them around $1.2 million. DMV also paid the employees who worked overtime, one and half time plus the supplemental pay of $250 for Saturday full day and $125 for half day on Sunday and Labor Day. DMV spent about an average of $400 per hour to run each of its customer service center. (3)The Virginia Government requested Northrop Grumman to conduct an independent third-party audit to find the…

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    and steel is a major to transfer the load to any structure. The decrease in bond strength between the concrete and steel leads to the failure of the structural member. Lap splice of steel is the common connection n to transfer the loads from one steel bar to another to which it is connected. Fiber reinforced polymer is a composite material made of a polymer matrix reinforced with fibers. The fibers are usually glass, carbon, aramid, or basalt. In structural members like a beam, columns and slab…

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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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    Egyptian Cotton vs. Bamboo Bed Sheets Egyptian cotton or bamboo bed sheets, which is better? On one hand, Egyptian cotton sheets are well established as the epitome of luxury while bamboo sheets are still fairly new to the world of bedding. On the other hand, bamboo sheets have some unique properties, giving it a competitive edge. So, when you’re shopping for a new set of sheets, should you opt for Egyptian cotton or bamboo? To answer this question, we’ve compared Egyptian cotton to bamboo…

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    2.1 Nanocomposite and nanofiller Composite is the combination of two or more different materials that are mixed together in order to bring out the best properties of both material. A nanocomposite is the composite which exhibit at least one dimension of the nanoparticle size material [17]. The nanoparticle size is mainly used as the disperse particle system to enhance or improve the properties of the composite material such as strength, conductivity and wear resistance. The main reason for…

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    The Aerospace Industry

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    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…

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    administrative abilities to meet technical and industry standards and worked assiduously to meet organisation code of ethics. My duties includes: 1. Monitoring off-air signals, signal strength and signal quality with a detailed report in prescribed format drafted by Station Engineer. 2. Assisting Assistant Station Manager in the maintenance of equipment related tasks. 3. Supervising technicians in the installation of devices and fault repairing. 4. Working in conjunction with vision mixing (VM)…

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    Hydraulic Fracking

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    Plastics (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…

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    Existing Commercial Roof

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    A roofing job on a commercial building can represent a significant investment, but since few flat roofs will last more than 20 or 30 years, it is an expense that most commercial property owners will face eventually. Although the average cost for a typical flat roof on a commercial building is approximately $30,000, there are numerous factors that could drive that price up or down substantially. Here are some of the considerations that influence the cost of a commercial roofing job. Type 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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