POD Assessment of NDI Procedures- Results of a Round Robin Test

Inspection, according to damage tolerance criteria, requires that the NDI procedures be quantified in terms of their sensitivity and reliability as defined by probability of detection (POD) and confidence limit measurements. The POD for NDI procedures can be assessed experimentally by inspecting statistically valid numbers of flawed and flaw-free parts using procedures that duplicate maintenance inspections. A comprehensive document describing testing and evaluation procedures for assessing the capability of an NDI system using POD and confidence limits has been published by AGARD [1]