Question

A specimen of 4340 steel Tempered at 425 Celsius is being tested using a single edge notched tension configuration. The Y parameter for the SEN is 1.17 . If the specimen 2.25 in wide and loaded to 50% of the yield strength, what length of starter crack will cause the speciem to fail by fracture rather than yield?

I have this answer ------------ a = 0.087 in , please provide all steps to the answer and explain the procudure thank you.

Answer 1