Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 60° and 35°, respectively, with the tensile axis.  If the critical resolved shear stress is 6.2 MPa (900 psi), will an applied stress of 12 MPa (1750 psi) cause the single crystal to yield?  If not, what stress will be necessary?

For a parallel plate arrangement, it is found that when the distance between the plates is 5 4 mm, a shearing stress of 781 300 Pa develops at the upper plate when it is pulled at a velocity of 1 1 m/s. What is u (the dynamic) viscosity (in N-s/m2) of the fluid between the plates?

3. A fine (thin) ring with a radius 50 mm is being pulled from the surface of water. If the ring has a mass of 1.0 g and the contact angle is 75, determine the force, P, needed to pull the ring free from the surface. 50 mm 75°

Define shear stress and it’s relation with dVx/dy for a Newtonian fluid

Calculate the viscosity of oxygen at 350 K and 1 atm pressure using equation 7.12 on page 90 of the text (also found in the PowerPoint slides).and compare with the value in Appendix I.

An acetal polymer block is fixed to the rigid plates at its top and bottom surfaces. If the top plate displaces 5 mm horizontally when it is subjected to a horizontal force P = 2 kN, determine the shear modulus of the polymer. The width of the block is 100 mm. Assume that the polymer is linearly elastic and use small angle %3D analysis.

Problem 5: Questions Determine the capacitance in uF of a parallel plate capacitor having a plate area of 0.03 m and a plate separation of 0.2 um. The dielectric has a dielectric constant of 7. If the Capacitance is C-25mF, what is the distance between the two plates? Use same other values. Determine the inductance of a coil with 400 turns on a core that is 2 cm long and hasa diameter of 1 cm. The permeability (not the relative one) is 0.25 mH/m.

5. The following table shows data from a flow study of a PS melt at 210°C in a capillary rheometer. a. Make a plot of log shear stress versus log shear rate. b. Calculate the value of the viscosity at 1 and 135 s', respectively. Shear Stress ,(10° dyn/cm') Shear Rate, 3.5 1.0 12.0 5.0 20.0 12.2 33.0 25.0 40.0 52.5 60.0 135.0 69.8 400.0

For the edge dislocation, cite the relationship between the direction of the applied shear stress and the direction of dislocation line motion. O Neither parallel nor perpendicular O Parallel O Perpendicular

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