Quantitative Assessment of Eddy Current Inspection Technician Skills

Abstract

In eddy current testing, it is desirable to keep sensor perpendicular to test surface, but it is difficult to automatically determine the sensor posture at inspection points with complex geometry, and the non-destructive testing technician manually operates the sensor. In such cases, it is necessary to ensure skill of the technicians as they are part of the non-destructive testing system. We are conducting research to establish a skills training method to efficiently develop non-destructive testing technicians. The behavior of licensed and unlicensed subjects was measured while inspecting defects around bolt holes. There was a clear statistical difference between the sequences of licensed and unlicensed subjects.ts will be established, and a prototype real-time skill teaching system will be built to verify the validity of the proposed method.