Question

A tensile test is carried out on a mild steel specimen. The results are shown in the following table of values:

| Load (kN) | 0 | 10 | 23 | 32 |
| Extension (mm) | 0 | 0.023 | 0.053 | 0.074 |

Plot a graph of load against extension, and from the graph determine (a) the load at an extension of 0.04 mm, and (b) the extension corresponding to a load of 28 kN.

Answer 1

The load/extension graph is shown in Figure . From the graph:

(a) when the extension is 0.04 mm, the load is 17.2 kN

(b) when the load is 28 kN, the extension is 0.065 mm.