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A beam with a rectangular cross section has dimensions, as defined in Fig. 8.13, of b = 40and t = 10 mm. The beam is made of 7475-T7351 aluminum and is subjected to a bendingmoment of M = 900 N·m.

(a) If a through-thickness edge crack of length a = 5mm is present, what is the safetyfactor against brittle fracture?

(b) Repeat (a) for a crack length of 10 mm.

(d) What crack length can be allowed if a safety factor of 3.0 against brittle fracture isrequired?

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Mechanical Engineering, Engineering

Category:- Mechanical Engineering
Reference No.:- M92087163

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