A comer cracked plate such as the one shown below

A comer cracked plate such as the one shown below hers dimensions of b = 50 mm, t = 5 and a relatively large h. If a force of P = 50 kN is applied.

a) What is the stress intensity factor K for a crack length of a = mitt?

b) Mud is the stress intensity factor K for a crack length of a = 30 mm?

c) What is the critical crack length a _c for fracture if the material has a fracture toughness K _k = 24 MPa?m?

For a/b ratios of less than 0.4, ? = 1. For all ratios greater than 0.4, the geometry factor any be calculated using the following equation: