(Solved): A 100 mm thick steel plate contains a through-thickness edge crack 5.0 mm long. It is loaded in pure ...

A 100 mm thick steel plate contains a through-thickness edge crack 5.0 mm long. It is loaded in pure bending with an alternating stress of amplitude 40 MPa and a load ratio of 0.1 . The plate material has a Paris coefficient of

and a Paris exponent of 3 . How many cycles will it take for the crack to grow to double its length? Choose the one option that is closest to the correct answer. 78,400 cycles 98,600 cycles 120,300 cycles 180,000 cycles 202,100 cycles 242,000 cycles