An engineering member is to be made of an aluminum alloy. It is in the shape of a plate loaded in tension that may have

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An Engineering Member Is To Be Made Of An Aluminum Alloy It Is In The Shape Of A Plate Loaded In Tension That May Have 1 (65.84 KiB) Viewed 22 times

An engineering member is to be made of an aluminum alloy. It is in the shape of a plate loaded in tension that may have a crack in one edge, as shown in Fig. 8.12(c). The dimensions are width b = 60.0 mm and thickness t = 5.00 mm, and the crack may be as long as a = 20.0 mm. The member must resist a tension force of P = 8.00 KN. (a) For a safety factor of 2.50 against brittle fracture, what minimum fracture toughness Kic is required? (Enter result in MPa/m) (b) For a safety factor of 3.00 against fully plastic yielding, what minimum yield strength o, is required? (Enter result in MPa) (c) Given your results from (a) and (b), select an aluminum alloy from Table 8.1 that meets both requirements (Note: consider the cost of the materials) NOTE: Remember to use the correct number of significant figures in your answers.