3. Two specimens with the same dimensions and made from two different materials, A and B, were subjected to tensile testing. The percentage reduction in the area of the specimen made of material "A' was calculated 3 times that of the specimen made of material B. In this case, OAthe ductility of material A and B is equal OBthe material A is brittle and material B is ductile O the material B is more ductile than material A OD nhe material A is more ductile than material B

640 480 160 0.002 0,004 0.006 0.008 0.010 Strain (mm/mm) A tensile test specimen of Aluminum alloy having a gauge length of 280 mm was tested to fracture. Stress and strain data obtained during the test are shown in the attached Figure. **Answers are approximate - do your best to read the graph. Determine: (a) the modulus of elasticity in GPa (4sigs). Enter this value into D2L answer box. (b) the proportional limit in MPa (3sigs). (c) the ultimate strength in MPa (3sigs). (d) Ductility of material based on percent elongation. (3sigs) Your Answer: Stress (MPa)

Engineering materials

To draw the shear stress-strain diagram, the collected data needed are the force applied on the specimen and its displacement. Select one: a. False O b. True