A crack has been discovered along the edge of a reinforcing rib in a titaniumhousing. The rib is 0.5 inches thick and 4.0 inches wide. The crack extends completely through the thickness and is about 1.20 inches long.

If the housing is subjected to static loading only, and the maximum estimated loading produces a tensile load along the rib axis of 50,000 Ib, should the housing be removed from service? The housing material exhibits a yield strength of 150 ksi and a plane strain fracture toughness of 50 ksi in^1/2