Word Pro - EMA4714-u1spr05_key

Word Pro - EMA4714-u1spr05_key - Unit I Examination EMA...

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Unit I Examination EMA 4714 - Materials Selection and Failure Analysis KEY Monday, February 14, 2000 1. [25 points total, 5 points each] The following components function according to principles described by rather simple physical behavior: transmit or sustain mechanical force [levers, tensile ties, torsion bars, etc.]; energy/momentum transfer [mechanical, thermal and electrical conduction]; barrier maintenance [pressure vessel]. Describe, in terms of clearly worded descriptions or appropriate mathematical expressions or formulae, what it is that the component is supposed to do [function] and what it is not supposed to do [constraint]. a. a garlic press b. a cheese slicer c. a wine bottle stopper [cork] d. a Phillips-head screwdriver e. a carbon electrical resistor Garlic press cheese slicer *************************************************************************** a. Hinged Lever - applies force at distance L i from hinge, L total /L i = F a /F i , σ = MI/c; Lever must not break or suffer excessive bending. b.
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This note was uploaded on 06/10/2011 for the course EMA 7414 taught by Professor Mecholsky during the Spring '11 term at University of Florida.

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Word Pro - EMA4714-u1spr05_key - Unit I Examination EMA...

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