Assessment of NDE Reliability Data.
Abstract
Twenty sets of relevant NDE reliability data have been identified, collected, compiled and categorized. Three relevant on-going programs are being monitored for future usage. A criterion for the selection of data for statistical analysis considerations has been formulated. A model to grade the quality and validity of the data sets has been developed. Data input formats, which record the pertinent parameters of the defect/specimen and inspection procedures, have been formulated for each NDE method. A comprehensive computer program has been written to calculate the probability of flaw detection at several confidence levels by the binomial distribution. This program also selects the desired data sets for pooling and tests the statistical pooling criteria before calculating the composite detection reliability. Probability of detection curves at 95 and 50 percent confidence levels have been plotted for individual Sets of relevant data as well as for several sets of merged data with common sets of NDE parameters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1976
- Accession Number
- ADA321309
Entities
People
- B. G. Yee
- F. H. Chang
- G. H. Lemon
- J. C. Couchman
- P. F. Packman
Organizations
- General Dynamics