Briefly compare the toughness of the materials.Calculate the average toughness and standard deviation for each material.

Izod Impact Test
(a) Use the table below with absorbed energy (Joules) results obtained for three materials tested. Calculate the average toughness and standard deviation for each material.
Izod Impact Test
Steel
Brass
Aluminum
1
2.56
1.87
0.97
2
2.62
1.72
0.79
3
2.68
1.67
0.80
Average absorbed energy

Standard deviation

(b) Sample calculation for any one metal
(c) Briefly compare the toughness of the materials.
Charpy Impact Test: Briefly discuss using the fracture surface image and the absorbed energy the difference in the impact resistance of the steel sample tested at room temperature and -59oC.

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