In: Mechanical Engineering
On the surface of a certain component made of aluminium with a modulus of elasticity of 75 GPa and a Poisson’s ratio of 0.35, a strain gauge rosette measures the following strains 0 = –94 × 10-6 60 = 370 × 10-6 120 = 235 × 10-6 The aluminium has a yield strength of 95 MPa. a) Determine the strain components x, y, and xy from the strain gauge measurements. b) Determine values for x, y and xy from the strain components in part (a). c) Determine the magnitude of the principal stresses. d) What is factor of safety according to the maximum distortion energy theory of failure? [20 marks] [40 marks] [40 marks] [20 marks]