IML213E-hmw1 - IML 213 E MANUFACTURING PROPERTIES OF...

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IML 213 E MANUFACTURING PROPERTIES OF MATERIALS HMW # 1 Due: 20/07/2010 1. A Cu-30% Zn alloy bar has a strain hardening coefficient of 0.50. The bar, which has an initial diameter of 1 cm and an initial gage length of 3 cm, fails at an engineering stress of 120 MPa. After fracture, the gage length is 3.5 cm and the diameter is 0.926 cm. No necking occurred. Calculate the true stress when the true strain is 0.05 cm/cm. 2. The following data were collected from a standard 0.505-in.-diameter test specimen of a copper alloy (initial length (lo) : 2.0 in.): After fracture, the gage length is 3.014 in. and the diameter is 0.374 in. Plot the data and calculate (a) the 0.2% offset yield strength, (b) the tensile strength, (c) the modulus of elasticity, (d) the %Elongation, (e) the %Reduction in area, (f) the engineering stress at fracture, (g) the true stress at fracture, and (h) the modulus of resilience. 3. A bar of Al2O3 that is 0.25 in. thick, 0.5 in. wide, and 9 in. long is tested in a three-point bending apparatus, with the supports located 6 in. apart. The deflection of the center of the bar is measured as a function of the applied load. The data are shown below.
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This note was uploaded on 07/18/2010 for the course IML 213E taught by Professor Celalettinergun during the Summer '10 term at Istanbul Technical University.

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IML213E-hmw1 - IML 213 E MANUFACTURING PROPERTIES OF...

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