Low Frequency Eddy Current Array Assessment at the FAA NDI Validation Center

摘要

This paper describes the low frequency eddy current array (LFECA) system and the results of experimentation performed in the FAA's NDI Validation Center. The Validation Center was a vital element in the development and quantification of the LFECA system's capabilities for crack detection. The experiments entailed the inspection of a statistically designed specimen set which simulates cracking in a lap joint typical of a commercial airline fuselage. We present a discussion of the lessons learned during these evaluations and a statistical analysis.