New technique for ultrasonic inspection of multi-pass welds with EMAT guided waves

Mínguez, Xavier; Innerspec Technologies Europe S.L.; Spain

Minguez, X.; Innerspec Technologies Europe, S.L.; Spain
Feuilly, N.; Saipem S.A.; France
Occhilupo, M.A.; Saipem S.P.A.; Italy
Syed, A.; Innerspec Technologies Inc.; USA

ID: ECNDT-0146-2018
Download: PDF
Session: EMAT
Room: G2
Date: 2018-06-13
Time: 13:50 - 14:10

Weld inspection is a recurring topic in nondestructive testing due to the potential safety and economic impact associated to poor weld quality. Thick-wall, multi-pass welds are very common in the nuclear, ship building and Oil&Gas industries among others. This paper presents a novel technique to provide real-time process and quality control of a partially completed weld just after welding process, providing significant savings in time and money by minimizing rework. The technique uses electromagnetic acoustic transducers (EMAT) to generate surface acoustic waves that detect defects on the top-most layer of a multi-pass weld.