Louisiana State University Mechanical Engineering Department Professor Meletis ME 2733 Fall 2004 Materials of Engineering Homework Assignment #5 Solution1. The worse case scenario is that the entire length of the defect acts as a stress concentrator, thus, a = 0.04 cm, KIC = 105 ksiin, Y=1.1 aYKICπσ=, aYKICπσ=ksi42954.204.01.1105=××=πσ_______________________________ 2. Phase rule: F = C – P + 2 For C=3; P=5; F=0 So, observation possible but only at a specific T. P and composition of all 5 phases (everything
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