As the use of fiberglass and carbon fiber composites in manufacturing has grown, so has the need for reliable nondestructive testing, both in the initial fabrication stage and while in service.
Although initially developed as a method for detecting defects in structures in order to safeguard against catastrophic failures, ultrasonic non-destructive testing (NDT) has evolved immensely to a technique considered the mainstay for the NDT industry.
If necessity is the mother of invention, then nondestructive testing (NDT) would be among her favorite progeny, at least with the design engineers and manufacturing sect.