Patent ID: 6874365

Claim:
A method of ultrasound inspection, said method comprising: providing a composite first aircraft engine part; introducing ultrasound to the first aircraft engine part; receiving a first set of at least one reflection of the ultrasound introduced to the first aircraft engine part; predicting a residual strength of the first aircraft engine part by using an amplitude of the received reflection with a plurality of results from a destructive and a non-destructive test performed on a plurality of second aircraft engine parts separate from the at least one first aircraft engine part, wherein said predicting a residual strength is performed by correlating a plurality of amplitudes of a second set of received reflections of the second aircraft engine parts with at least one non-ultrasound test of each of the second aircraft engine parts, wherein said correlating the plurality of amplitudes comprises generating a linear least squares fit between the amplitudes and a plurality of results from the non-ultrasound tests.