Development of Endoscope and Eddy Current Integral Testing Instrument and Application on an Aeroengine

The article describes basic theory and structure of the new handy all inside endoscope and eddy current unify testing instrument made. The instrument skillfully integrates multi-frequency eddy current technique and video endoscope technique together by design of hardware and software, moreover, a miniature unify endoscope and eddy current probe is developed. The instrument has been successfully applied on aircraft engine tray and blade testing.