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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A rectangular beam made of ABS plastic is b = 20 mm deep and t = 10 mm thick. As shown in Fig. 8.13(a), a bending moment M is applied, and a through-thickness edge crack may be present. For a safety factor against brittle fracture of 2.5 in stress, what is the largest crack length a that can be allowed if (a) M = 20 N·m, and (b) M = 5.0 N·m?

Figure 8.13
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