To determine the nominal or engineering stress and strain experienced by a speci

Question

To determine the nominal or engineering stress and strain experienced by a specimen of a material while it is subjected 10 a tension test, and to be able to read important values from a conventional stress-strain diagram obtained from the test A tension test is being conducted on a steel-rod specimen with a gauge length of L0 = 2.6 in. and initial diameter of d0 = 0.5 in. Data were collected to form the conventional stress-strain diagram as shown. From the diagram, f = 72.0 ksi, e = 100.0 ksi, g = 85.0 ksi, and h = 0.152in/in. Nominal or Engineering strain in the rod Assuming that the strain remains constant throughout the region between the gauge points, determine the nominal strain epsilon experienced by the rod if it is elongated to L = 2.6in. Express the nominal strain in inches per inch to three significant figures.

Explanation / Answer

Nominal strain = (L - L0)/L0 = (2.6 - 2)/2 = 0.3 in/in

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