A tensile test yields the following data on a sample: Initial cross section: 100 mm2 Elongation at failure: % 5 Force at failure: 22,000 N The sample is known to have a KIC of 40 MPa m1/2 and a Poisson ratio of 0.3. a) What could be the critical crack size for the sample tested? b) To

A tensile test yields the following data on a sample: Initial cross section: 100 mm2 Elongation at failure: % 5 Force at failure: 22,000 N The sample is known to have a KIC of 40 MPa m1/2 and a Poisson ratio of 0.3. a) What could be the critical crack size for the sample tested? b) To use this material in an application with a safety factor of 3, what is the