Result Tensile Janunary 12

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RESULT: A tension test was performed on a steel specimen having an original diameter of 12 mm and a gauge length of 50 mm. The data is listed in the table. TABLE 1: Tabulated Data of tension test Load (kN) 0 11.0 28.6 37.4 40.5 43.1 52.8 61.6 63.8 61.6 58.1 Elongation (mm) 0 0.0225 0.0625 0.1000 0.1625 0.2450 1.0000 3.0000 6.2500 8.7500 11.7500 1. 2. 3. Construct a stress-strain curve from the load-elongation curve. Determine approximately the modulus of elasticity. Determine the ultimate stress, the rupture stress and modulus of toughness. DISCUSSIONS: 1. Explain your findings on the tensile test results. CONCLUSION: Summaries your findings and write a conclusion from the experiment. QUESTIONS: 1. 2. 3. Determine the main purpose of tensile testing. List the requirements for the preparation of test pieces for a tensile test. Produce a freehand sketch of a test specimen showing all sizes and tolerances required for tensile test. 4. 5. List the safety precautions that must be taken when conducting the tensile test. In step form, explain the procedure required for conducting the tensile test. PROOF STRESS: PROOF STRESS: Pr oof .Stress Pr oof .Load Area ULTIMATE TENSILE STRENGTH: Ultimate Tensile Strength = Maximum.Load Original.Cross Sectional . Area ELONGATION: Elongation New.Length Gauge.Length 100 Gauge.Length YOUNG’S MODULUS OF ELASTICITY Young.Modulus Stress Strain Stress Load Cross .Sectional . Area Strain Extension Original.Length

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