API QUTE Practice Questions - API QUTE Qualified Ultrasonic TOFD Examiner Exam

On a TOFD D-scan (side view), a planar flaw near the upper (scanning) surface is best characterized by:

A strong back-wall echo with no other changes A break or perturbation in the lateral wave with little or no back-wall change A parabolic response from the mid-wall region A complete loss of all signals including the main bang

Correct Answer:

A break or perturbation in the lateral wave with little or no back-wall change

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