Tensile tests in Aluminium are carried out. The tensile test specimens are characterized by a diameter d = 15 mm and len

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Tensile Tests In Aluminium Are Carried Out The Tensile Test Specimens Are Characterized By A Diameter D 15 Mm And Len 1 (337.67 KiB) Viewed 34 times

Tensile tests in Aluminium are carried out. The tensile test specimens are characterized by a diameter d = 15 mm and length Lo = 200 mm. a) b) F (KN) 150 100 F (KN) 50 0 0 80 70 60 50 40 5 10 15 20 AL (mm) 25 30 35 30 20 10 0 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 AL (mm) Figure 1. a) Measured force versus displacement. b) Detail at small deformations. Determine the following material properties and write down your calculations: a) Modulus of elasticity (1 point); b) Yield strength (1 point); c) Tensile strength (1 point); d) Elongation at fracture (8) (1 point); From the test results it is clear that the material undergoes elastic and plastic deformation. In the next questions you have to specify the extent of a displacement region by stating the displacement at the start and the end of the region which must both be between AL=0 mm and AL=31 mm. e) Identify the start and end of the region where there is an elastic component to the total strain. Explain your answer (1 point). f) Identify the start and end of the region where there is a plastic component to the total strain. Explain your answer (1 point).