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Unformatted text preview: UNIVERSITY OF CALIFORNIA College of Engineering Department of Materials Science and Engineering Assigned 10/27 /0 9 Due 11/3/0 9 Fall 200 9 MSE 113 Mechanical Behavior of Materials Prof. Ritchie PROBLEM SET 5 Go to library and locate the ASTM Standards. Find and read the standard on Test Method for Linear-Elastic Plane-Strain Fracture Toughness K Ic of Metallic Materials (E- 399). Problem 1 Explain, as quantitative as possible (but preferably brief), the difference between plane stress and plane strain deformation? Why is the fracture toughness of a metallic material invariably lower in plane strain? Problem 2 You are the metallurgist for a design group which is working on cars for the proposed Maglev (magnetic levitation) high-speed train route between Pittsburgh and Philadelphia. The structural engineer for the project asks you to help select a material for the car underframe. She has several candidate materials in mind, all of which have adequate yield strength, and which have varying densities (reduced weight of the cars...
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This note was uploaded on 01/25/2010 for the course MSE 113 taught by Professor Ritchie during the Fall '09 term at University of California, Berkeley.

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