Tensile Test

1. Introduction to the Tensile Test
2. Tensile Testing Machines
3. Measurement of Strain
4. Determination of Yield Point
5. Effects of Strain Rate
6. True Stress - True Strain
7. Extensometry
8. Work Hardening and Necking
9. Work Hardening and True Stress - True Strain Curves
10. Work Hardening and Ductility
11. True Stress/Strain
12. True Stress/Strain Curves and Ductility
13. Microstructural Effects and Ductility I
14. Microstructural Effects and Ductility II
15. Microstructural Effects and Ductility III
16. Ductility and Elongation
17. Conduct a Tensile Test
18. Summary

In this section you will determine the Elastic (Young's) Modulus, the yield and tensile strength and ductility of steels.

To measure the tensile properties of a steel requires you to extend the test piece at a fixed speed and continuously measure the extension as the applied force, or load increases, as you would expect from Hookes law up to the elastic limit and beyond.

From the load-elongation data you calculate the stress and strain as follows:

Stress = Load / Original Area of the test piece

Strain = Length / Original Length of the test piece