Load - Extension Diagram

The following data was obtained from a tensile test on a specimen of 10mm diameter and gauge length 60mm.

Using the graph paper supplied, plot the load-extension diagram and determine:

(1) The tensile strength

(2) 0.1% Proof Stress

(3) Young’s Modulus for the specimen.

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Plot the Load - Extension Diagram

(1) Find the Tensile Strength

(2) Find 0.1% Proof Stress

At 0.06mm, draw a line parallel to the straight line portion of the graph.

0.1% proof stress

0.1% of 60mm = 0.06mm

Proof load = 77kN

0.1% proof stress = Proof Load / CSA = 77 / 78.55 = .98KN/mm2

(3) Find Young's Modulus

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