Benefits of PWI weld inspection for attenuative materials

A Caulder1, G Dao1, N Laroche2, E Carcreff2, Z Xu2 and D Braconnier2
1Advanced OEM Solutions, Cincinnati, USA
2The Phased Array Company, West Chester, USA
Presented by: Cyril Thibault Advanced OEM Solutions/The Phased Array Company Email: cyril.thibault@aos-ndt.com; Tel: 45 7172 7623 

Full matrix capture and the total focusing method (FMC/TFM) is thought by many to be the next step forward, since the introduction of phased array ultrasonic testing (PAUT), in advancing ultrasonic inspections for weld quality. FMC/TFM provides greatly increased focusing abilities over PAUT, as well as offering the ability to acquire ultrasonic data in a multi-modal format.

One derivative of FMC/TFM is plane wave imaging/TFM (PWI/TFM). PWI is an optimised manner in which to acquire the FMC dataset for TFM image reconstruction. PWI/TFM offers many benefits over traditional FMC/TFM, including increased scan speeds, better depth of penetration and better management of attenuation.

This presentation will provide a broad review of PWI/TFM in application and clearly demonstrate its ability to inspect attenuative welds with increased resolution and improved signal-to-noise ratio, when contrasted with techniques currently used such as PAUT.