A 1 in. deep edge crack is found during routine maintenance in a long rectangularbar
Chapter 6, Problem 6.12(choose chapter or problem)
A 1 in. deep edge crack is found during routine maintenance in a long rectangular bar made from a material whose fracture toughness is \(55 \ \mathrm{ksi} \ \sqrt{in.}\) Referring to Figure P6.12, and assuming linear elastic fracture mechanics, is it safe to return the bar to service without repair? Use superposition and calculate the stress intensities for the tensile and bending components separately, then combine them by addition.
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