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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
1. Write down the formulas for calculating the stress and strain for a sample subjected to a tensile test. Assume the sample shows necking.
2. The following data were collected from a standard 0.505-in.-diameter test specimen of a copper alloy (initial length (l0 = 2.0 in.):

After fracture, the total length was 3.014 in. and the diameter was 0.374 in. Plot the data and calculate the 0.2% offset yield strength along with
(a) the tensile strength;
(b) the modulus of elasticity;
(c) the % elongation;
(d) the % reduction in area;
(e) the engineering stress at fracture;
(f) the true stress at fracture; and
(g) the modulus of resilience.
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