Stress - Strain (example question).
The following data were obtained from a tensile test on a specimen of an aluminium alloy.
Using the graph paper supplied,
(1) Plot the stress-strain diagram and then determine: (2) The 0.1% proof stress (3) Young’s Modulus of Elasticity for the specimen.
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(1) Plot the Stress - Strain diagram
(2) Find 0.1% Proof Stress
From the graph, the 0.1% proof stress is 325N/mm2
(3) Find Young’s Modulus of Elasticity for the specimen.
To obtain an accurate answer, choose a point from the given table which you used to draw the straight line portion of the graph eg. Stress= 125 / Strain = 1.4.
 
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