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UNIVERSITY OF CALIFORNIA AT BERKELEYDEPARTMENT OF CEEFALL SEMESTER, 2014Instructor: P.J. M. MonteiroName: ____________________CE 60 – EXAMINATIONPlease justify all your answersQuestion 1 (31 points)I)Draw direction vectors in unit cubes for the following cubic directions:3_31 , 2 3_3 (8 points)II) Draw in unit cubes the crystal planes that have the following Miller indices: 31_2and 102_ (8 points)
III) For a given system, the net energy is given byE AaBa, where a is theinterionic distance, A and B are constants for attraction and repulsion, respectively.Compute the equilibrium length ao . (15 points)
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Question 2 (28 points)I)Calculate the volume of an BCC unit cell in terms of the atomic radius R. (5points)II)The plastic strain of metallic sample is 0.284 when loaded to 100 ksi.Compute the total strain in the sample. Assume that the elastic modulus of themetal is 30 106