Word%20Pro%20-%20q4spr2005_key4714

Word%20Pro%20-%20q4spr2005_key4714 - Quiz 4 EMA 4714 -...

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Quiz 4 EMA 4714 - Materials Selection and Failure Analysis KEY Monday, March 21, 2005 1. [30 points] The group 6 materials selection presentation contained a number of flaws, any one of which could be fatal. You will recall that their project dealt with a customer need involving keeping Firehouse Sub take-outs as hot and fresh as their sit-down product. ± Their objective - “minimize heat transfer through packaging [Q = k c A( T/ x)]” ± Their constraint - “minimize thickness (mass) of packaging material [m = Aw ρ ]” ± Their free variable = “A” ± Their derived performance index - “Q = ( T)(m/t 2 )(k c / ρ )” ± Their conclusion - “to minimize Q, maximize ( ρ /k c )” Your mission, nearly impossible to be sure, is to [1] find the flaws generated by group 6, [2] fix them and [3] suggest a more reasonable performance index which is consistent with the revised objectives and constraints you have come up with. *************************************************************************** “Flaws”
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This note was uploaded on 10/19/2011 for the course EMA 4714 taught by Professor Staff during the Spring '08 term at University of Florida.

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Word%20Pro%20-%20q4spr2005_key4714 - Quiz 4 EMA 4714 -...

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