The following readings were recorded during a tensiletest of a mild steel specimen 24mm, wide by 10 mm thick and withgauge length of 200 mm.
Force (KN)= 16 32 48 64 68 72 76 79
Elongation =0.066 0.133 0.198 0.264 0.281 0.304 0.355 1.125
Force (KN) =76.8 83.7 103.8 111 112.8 108 96
Elongation = 3.75 6.66 15.00 25.00 36.5 45.0 50.0
The test piece fractured at a 50 mm elongation. Plot aload-extension diagram using the following scales : 10 Divisions onthe x-axis = 5mm extension; 10 Divisions on the y-axis.
On the same graph paper using the scale 10 Divisionson x-axis = 0.5 mm extension, and 10 Divisions on the y-axis = 10know, replot the elastic portion of the graph.
Using the graph, determine the following :
1.Modulus strength
2.Yield strength
3 ultimate tensile strength
4.percentage elongation
