Q19. The stress-strain graph of an aluminum material is shown below. By using the data from the graph 7075-T651 Aluminium E(0.0252, 565MP) C(0.0075, 500 MP) 2326- A(000474, 326MP) 200- 200 0.005 0.010 0015 0.020 0025 6030 ass do Strain (No unit) (a) Identify the proportional limit, elastic limit, tensile strength, and fracture point. (1.0 Mark) .A-Proportional limit .B-Elastic limit C-Tensile strength, and D-Fracture point (b) Calculate the young's modulus of the aluminum? (1.5 Marks) (c) Find the modulus of resilience of the material? (1.5 Marks) (d) Assume the modulus of toughness of the material is nearly 18.0 MJ/m then calculate the total energy absorbed per unit volume by the (1.0 Mark) specimen?