QUESTION 2 Three strain gauges are fixed at a point on the free surface of a machine component as in Figure Q2. Strain gauge & has reading of 400, & has reading of -200 while & has reading of -100. Let E = 190 GPa and y = 0.31. a) Find the values and draw the strain element in the x-y direction. b) Find the values and draw the principal strains element. c) Find the values and draw the maximum in-plane shear strain element. d) If another strain gauge is fixed in direction d which is at an angle of 25 degrees from the horizontal direction, what should be the strain reading? e) Find the values and draw the principal stresses element. 25 &b Ec Ea 30 60 Figure Q2 QUESTION 1 The solid rod shown in Figure Q1 has a diameter of 35 mm. If it is subjected to the loading shown, at point A: a) sketch the stress element, b) calculate the principal planes, the principal stresses and sketch the orientation of the element, c) calculate the maximum in-plane shearing stress planes, the maximum in-plane shearing stress, the associated normal stresses, and sketch the orientation of the element, d) determine the absolute maximum shearing stress. x 1000 N 1500 N Figure Q1 0.8 m A 1.0 m 1.2 m