Supersonic fault localization of T-type welding seam of crane girder;

Briefly introduced the pretreatment prior to supersonic detection of the T-type welding seam between crane beam side plate and bottom plate,the selection of supersonic detection method,the operation key points,evaluation as well as recording.

In order to improve detection precision, the method of detecting T-type fillet weld lack of penetration height was discussed using ramp probe in the wing.