High School

Thank you for visiting During a tensile test the starting gauge length is 100 0 mm and the cross sectional area is 150 mm 2 During testing the following. This page is designed to guide you through key points and clear explanations related to the topic at hand. We aim to make your learning experience smooth, insightful, and informative. Dive in and discover the answers you're looking for!

During a tensile test, the starting gauge length is 100.0 mm, and the cross-sectional area is 150 mm\(^2\). During testing, the following force and gauge length data are collected:

1. 17,790 N at 100.2 mm
2. 23,040 N at 103.5 mm
3. 27,370 N at 110.5 mm
4. 28,910 N at 122.0 mm
5. 27,400 N at 130.0 mm
6. 20,460 N at 135.1 mm

The final data point (6) occurred immediately prior to failure. Yielding occurred at a load of 19,390 N (0.2% offset value), and the maximum load (4) was 28,960 N.

Tasks:
(a) Plot the engineering stress-strain curve.
(b) Determine the yield strength.

Answer :

a. the engineering stress strain curve is attached.

b. the yield strength of the material is 129.27 MPaa.

Engineering stress is described as the force applied divided by the original cross-sectional area.

engineering_stress = force / 150 mm²

Engineering strain on the otherhand is described as the change in length divided by the original length.

engineering_strain = (gage_length - 100.0 mm) / 100.0 mm

The 0.2% offset yield strength is the stress at which the engineering strain is 0.2% greater than the strain at the yield point and the yield point is the point on the stress-strain curve where the material begins to deform plastically.

From the curve attached, the yield point appears to be around 19390 N.

the strain at the yield point =

(19390 N / 150 mm²) / 100.0 mm

= 0.12927.

So we have that 0.2% of the strain at the yield point

= 0.12927 * 0.002

= 0.00025854.

0.12927 + 0.00025854

= 0.12952854.

From the stress-strain curve, we see that the stress corresponding to a strain of 0.12952854 is 129.27 MPa.

Thank you for reading the article During a tensile test the starting gauge length is 100 0 mm and the cross sectional area is 150 mm 2 During testing the following. We hope the information provided is useful and helps you understand this topic better. Feel free to explore more helpful content on our website!

Rewritten by : Jeany

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