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Unformatted text preview: 4. Define engineering stress and strain, with SI units. 3 pts σ = F/A where F = force = N σ = stress = force/area = N/m 2 = Pa A = area over which force F applied = m 2 ε = ∆ l/l , where ∆ l = l i- l o l i = instantaneous length = m l = length prior to loading = m ε = strain = no units 5. On the axes below, sketch the curves for the semi-infinite solution at two different times. Be sure to indicate which curve represents the longer time. 3 pts Distance from interface Concentration, C X = 0 interface Short time Longer time...
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This homework help was uploaded on 03/26/2008 for the course ENGR 213 taught by Professor Dr.stubbs during the Fall '04 term at Texas A&M.
- Fall '04