Woodruff School of Mechanical Engineering Georgia Institute of Technology Design‚ Materials‚ and Manufacture 1st Midterm Examination Fall 2013 Note that multiple choices do NOT offer partial credits; check your calculations carefully. 1. Epoxy has density of 1.25 g/cm3 and elastic modulus of 4 GPa while Kevlar–49 has density of 1.5 g/cm3 and elastic modulus of 120 GPa. If a kelvar-49-reinforced epoxy composite is to have a transverse elastic modulus of 6.5 GPa‚ what should be its fiber volume
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Seperatation Technqiues of Sand/Salt/Water Mixture Most of the material that are encountered in everyday life are not pure substances. Materials ranging from cement‚ food and ink are formed from physical combinations of various substances called mixtures. A mixture is a type of material that consists of two or more different substances that are not chemically combined. All mixtures can be separated back into its original state except for those that undergo irreversible change. A mixture can take
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MATERIAL SAFETY DATA SHEET PRODUCT NAME: EPO-TEK 353ND‚ Part A EPOXY TECHNOLOGY 14 FORTUNE DRIVE BILLERICA‚ MA 01821 EMERGENCY PHONE: US/CANANDA : 800-255-3924 INT’L COLLECT: + 813-248-0585 DATE REVISED: 4/30/2009 REV: D *HMIS: HEALTH-2 FIRE-1 REACTIVITY- 0 Carcinogen: NTP (No) IARC (No) OSHA (No) * HMIS CODE ratings are estimated by Epoxy Technology. ____________________________________________________________ ________________________________ I. IDENTIFICATION & PHYSICAL DATA PERCENT
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Polyurethanes have a large variety of applications due to their unique property range‚ such as high strength‚ high hardness‚ high modulus‚ and high elongation at break. Therefore‚ there are so many problems these materials can solve: from automotive parts to building and construction‚ from medicine to electronics‚ from textiles to furniture. Even so‚ this is not all (Prisacariu‚
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Page 88-90 stated that plastics are polymers and are chemically unreactive because they are held together by stable single bonds‚ which also results in their chemical stability. The stability of plastics makes them resilient to breakage making them good replacements for fragile items such as glass. Some plastics are weakened and dissolved by organic non-solvents so not all plastics can be used for the same purposes. Plastics are moulded to different shapes with some being flexible like plastic bags
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B 110 Materials Engineering A Case Study into the Application of Composite Technology – A400M Wing Spars Candidate ID: 499751 November 2014 Table of Contents Introduction to the Airbus A400M Atlas 3 CFRP Structure and Properties 5 Structure – CFRP 5 Properties – CFRP 6 Processing Method 7 Processing Method – Spars 8 Prepreg 8 Automated Tape Laying 8 Autoclave Processing 8 CFRP vs Aluminium Alloys 9 Advantages – Comparison of CFRP vs Aluminium 9 Disadvantages of CFRP 9 Failure of Composites 10 Future
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Material requirements planning (MRP) Material requirements planning (MRP) is a production planning and inventory control system used to manage manufacturing processes. Most MRP systems are software-based‚ while it is possible to conduct MRP by hand as well. An MRP system is intended to simultaneously meet three objectives: * Ensure materials are available for production and products are available for delivery to customers. * Maintain the lowest possible material and product levels in
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Methods of study The laboratory study has tow division; the first one is for examining the characteristics of studied alabaster and the weathering process acting on alabaster used in Luxor and Karnak temples. The second division in this work is to examine and evaluate four co-polymer resins selected as stone surface consolidating for the weathered alabaster. Various alabaster samples have been collected from Wadi Sannur quarry and Wadi Assiuty quarry. Archaeological samples were taken from the statues
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4 Plasmon Resonances for PS@Au-Cu-Ag Composite Nanoshells 4.1 Introduction As shown in recent studies‚ various methods have been developed to expand the application area of noble metal nanoparticles and to control the morphology and the behavior. Composite microspheres with noble metal nanoshells have great advantages in catalysis‚ optics‚ conductivity‚ chemical sensors‚ and so on [1–5]. Moreover‚ these hybrid materials can prevent noble metal nanoparticles from agglomerating without the use of
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Submitted to: PROF. ROSFE CORLAE D. BADUY Submitted by: ADRIAN ERWIN M. PEGASON ERWIN S. FLORES BETA COMPANY Beta Company produces two products‚ A and B‚ each of which uses materials X and Y. The following unit standard costs apply: | |Material X |Material Y |Direct Labor | |Product A |4 lbs @ $15 |1 lb @ $9.50 |1/5 hr @ $18
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