Nondestructive testing is one of the quality control and maintenance inspection methods on mechanical structures, especially in the aerospace industrial. Because of the inspection uncertainty in the NDT, the uncertainty and the reliability of the NDT system must be evaluated. In the laboratory accreditation, the uncertainty is accepted as error index of NDT system. In the MIL standard, the reliability of NDT is defined as the flaw detection probability of the NDT system. In this paper, their definitions, theories, model selections, analysis procedures and evaluations of NDT system have been completely presented. The inspected dimensions of porosity on the electron beam weldments were inspected by radiographic method, and the true dimensions by metallography method were used for the analysis.
Publication Source: Trends in NDE Science & Technology; Proceedings of the 14th World Conference on Non-Destructive Testing, New Delhi, 8-13 December 1996.Vol. 3, pages 1381 - 1384 Publisher:Ashgate Publishing Company
NDTnet
