Testing ME-3701-02 3rd March 2009 Ke Chen Abstract This experiment‚ as may be derived from the title‚ involves testing multiple metallic specimens to determine their toughness‚ strength and hardness. The three tests used to determine these characteristics are called the Charpy Impact test‚ tensile strength test and Rockwell Hardness test. As stated by www.key-to-steel.com {1}‚ “Charpy impact test method for metallic materials is specified by European EN 10045 standard. This specification
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of proportional limit *The toughness was approximated by using total area under curve and applying Riemann Sum 5. Determine Engineering Ultimate and Breaking Strength of the samples tested: Copper UTS 22‚222 & Breaking Strength 25‚770 psi Aluminum UTS 13‚333 and Breaking Strength 18‚933 psi Polyester UTS 15‚555 and Breaking Strength 20‚266 psi 6. Percent Elongation at break: [Lf-lo/lo]*100 Copper =17% Aluminum=4.44% Polyester=18.76% 7. Compare published values including % differences and
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Subjective 30 year old Caucasian female c/o HA. (P) Pt first noticed HA on her way home from school. HA occurs in afternoons‚ usually around 4 pm. Resting alleviates pain. Exercise‚ not enough sleep aggravates pain. Pt takes Ibuprofen (400 mg) and Sudafed. Pt does not recall Sudafed dose. (Q) Pain aching‚ throbbing‚ sometimes stabbing. (R) HA pain on right side of head. Sometimes radiates along right side of neck up to forehead. Pt denies other symptoms associated with HA pain. (S) Pt rates pain
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tensile strength‚ Aluminium is easily to bend and Copper has the average all capable of these three. It has been shown that‚ Three materials before cold rolling exhibits excellent bend properties so that‚ it is capable of being bent cold around a pin under high angle without crack or fracture‚ due to ductile behavior. Also it can be seen that surface quality of starting materials is better than of cold rolled samples. To sum up‚ As Cold rolling is a metalworking process it increases the strength and
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Realiable -Strength Training: -The basic principles of strength training is an overload manipulation of the number of repetitions‚ sets‚ tempo‚ force applied and exercise types. -These are important in order to achieve effective improvement in endurance‚ strength‚ size and shape -Strength training can be either isotonic or isometric -The classifications of strength are: Maximum (absolute) strength- The greatest force that is possible in a single maximum contraction Elastic Strength (power)- The
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Journal Analysis Title of the Research Author/s Journal Year of Publication Dissimilar material laser welding between magnnesium alloy AZ31B and aluminum alloy A5052-0 R. Borrisutthekul et al. Science and Technology of Advanced Materials 6 2005 Dissimilar Welding of Al and Mg alloys by FSW T. Morishige et al. MATERIALS TRANSACTIONS Vol. 49 2008 In Partial Fulfilment Of the Requirements for the Subject Industrial Materials and Process Submitted by: Submitted to:
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Table of Contents Abstract 2 Theoretical Background 2 Equipment & Materials 8 Procedure 9 Data Summary 7 Results 9 Conclusions 10 Sources of Error 12 Safety 12 References 13 Signatures 13 Table of Figures Figure 1: Stress Strain Diagram for Structural Steel 4 Figure 2: Fractured specimens 8 Abstract In this lab‚ students will be
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pressure: where σ is stress (in Newtons per square metre or‚ equivalently‚ Pascals). F is force (in Newtons‚ commonly abbreviated N)‚ and A is the cross sectional area of the sample. Tensile Strength; The (ultimate) tensile strength is the level of stress at which a material will fracture. Tensile strength is also known as fracture stress. If a material fractures by ’crack propagation’ (i.e.‚ it shatters)‚ the material is brittle. Yield Stress; On a stress strain graph
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efficiency. Retrieved July 14th‚ 2012‚ from: http://www.ornl.gov/info/press_releases/get_press_release.cfm?ReleaseNumber=mr20060306‐00 Paiva‚ M. C.‚ Bernardo‚ C. A. and Edie. D. D.(2001). A comparative analysis of alternative models to predict the tensile strength of untreated and surface oxidised carbon fibers. Carbon‚39‚ 1091–101. Rocky Mountain Institute (RMI). (2011). Comparison of carbon fiber vs steel manufacturing costs. Retrieved June 29th‚ 2012 from: http://www.rmi.org/RFGraph-carbonfiber_vs_steel_manufacturing
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