You, a car accident investigation expert, are assigned a case where the insurance company suspects that the car company did not properly account for the fatigue failure when designing the axle of their car. You are given a sample of a broken front-right axle to determine if the axle failure was a fatigue failure. You were told that the axle broke when the car traveling at 45 mph hit a pothole in the road. How will you most efficiently determine if the failure caused was a fatigue failure or the pothole effect? You are only given the broken axle.?