geometry was used with the region of minimum cross section having the dimensions: thickness =1.04 mm‚ width = 3.14 mm‚ and length section = 30 mm. This experiment was accomplished by first placing our specimens one at a time into a tensile testing machine (A G.U.N.T Hamburg Tensile Testing Machine (Max. load = 2kN))‚ which‚ under physical control‚ slowly increased the tension force on each specimen‚ stretching each until failure. We then analyzed the data output from the load and extension gauge. Referring
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The characteristic properties of slime can be explained by polymerisation reactions. Polymers can be explained most simply by the polymerisation of the molecule ethylene into polyethylene (see figure 1 below). Figure 1. Polymerisation of polyethylene from ethylene. In this example‚ the double bond between the carbon atoms is broken‚ allowing each carbon atom to form one more bond between another molecule. The double bond between the carbon atoms is weaker because the type of orbital is ‚ compared
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POLYSTYRENE: RECCOMMENDATIONS FOR THE LEADERS OF THE LOCAL INSTITUTIONS TO RESOLVE THIS PROBLEM By: Tammy L Drake AOCI 1010-Section 1A (Introduction to Sociology) Professor Julio C. Caycedo Introduction and Thesis Statement What is Styrofoam? Styrofoam is actually a trade name of a polystyrene foam product used mainly for housing insulation and craft applications‚ but can be seen elsewhere. The scientific name for Styrofoam is polystyrene. It is a petroleum-based plastic made from the
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resistant * High tensile strength and melting point * Permeable to oxygen (can decompose more speedily without oxygen) USES: * Disposable products such as razors‚ rubbish bags‚ cutlery => biodegradable‚ therefore environmentally safe * Surgical applications‚ such as surgical pins/stiches => biodegradable/compatible‚ non-toxic and high tensile strength‚ therefore safe to use in the body * Replacement for petroleum-derived plastics => high tensile strength‚ insoluble
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cross-sectional area of 0.25 in2 is stretched between two fixed points. The tensile load at 70°F is 1200 lb. What will be the stress at 0°F? At what temperature will the stress be zero? Assume α = 6.5 × 10-6 in/(in·°F) and E = 29 × 106 psi. Solution 261 For the stress at 0°C: answer For the temperature that causes zero stress: answer problem 262 A steel rod is stretched between two rigid walls and carries a tensile load of 5000 N at 20°C. If the allowable stress is not to exceed 130
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ERRORS AND UNCERTAINTIES IN EXPERINMENTAL MEASUREMENTS ELANKUMARAN NAGARAJAN 4TH DECEMBER 2011 SUMMARY Experimentation is an important process that will be carried out on new theories‚ ideas‚ products and devices to validate them. Despite the quality of the experiment there will always be some uncertainties associated with the experimental data. These uncertainties
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This experiment was catalyzed by some Polyethylene Terephthalate (PET) bottle problems documented by the company. In order to prevent the loss of a customer‚ our goal is to analyze PET bottles‚ preforms‚ and storage conditions. After heating a bottle and preform to one-hundred and eighty degrees Celsius‚ the bottle shrank and became opaque on the top and bottom of the bottle. The preform became completely opaque and kept its original size and shape. The Differential Scanning Calorimeter (DSC) provided
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MECHANICAL SHAKER 2. L.A. ABRASION TESTING MACHINE 3. COMPRESSION TESTING MACHINE 4. UNIVERSAL TESTING MACHINE 5. TENSILE TESTING MACHINE A. MECHANICAL SHAKER This machine is usually used during a gradation test The said shaker has the capacity of approximately 10 to 20 kilograms. Mechanical Shakers can be used for design qualifications‚ end product reliability and fatigue testing‚ environmental
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CE 314K Properties and Behavior of Engineering Materials Laboratory 4: Compressive‚ Flexural‚ and Tensile Strength of Concrete Lab Section: TH 2–5 PM Unique #: 15785 Lab TA: Janaki Vamaraju Solutions: 1.) In this lab‚ concrete cylinders and beams created from Lab 3 were tested for compressive‚ flexural‚ and tensile strength. The compressive strength of the concrete was found by applying an axial load on the cylinder until the cylinder failed. The flexural strength
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Global Polyethylene Market 2014-2018 Polyethylene is also known as polythene and is the most commonly used plastic. It is chemically synthesized from ethylene. Polyethylene is used in various products as it can be easily remolded. It is used in packaging‚ pond liners‚ pipes‚ molds‚ wires‚ and cables‚ general purpose tubing‚ drums‚ carrier bags‚ and household goods. There are three major types of polyethylene: HDPE‚ LDPE‚ and LLDPE. Covered in this Report This report covers the present
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