Section 3.1.0. NDI Demonstration of Crack Detection Capability
Non-destructive inspection (NDI) methods are commonly used to
determine the condition of a structure during production and at in-service
inspections. Detailed descriptions of
the principles and use of these methods are generally available (see, for
example, Nondestructive Testing Handbook, Volume Ten ). The objectives of this subsection are to
briefly describe and compare the common NDI methods and to discuss the
statistically based demonstration programs that are required to quantify the
detection capability of an NDI system.
A distinction between inspections for cracks and for corrosion is made
for capability evaluations even though the physical principles of the
techniques are common.