Phased array ultrasonic testing (PAUT) is a well-established ultrasonic testing technique that uses a multi-element probe that allows control of the angle, raster and focal properties of the ultrasound. It is used for multiple applications where engineering the ultrasound beam to the specific application is advantageous.
PAUT has multiple techniques for pulsing multi-element probes and algorithms for processing the ultrasound returned to the receivers. Full matrix capture (FMC) is a process of individually pulsing transducer elements in a sequence, and total focusing method (TFM) is an imaging algorithm that reconstructs ultrasound as it received by receiving elements. The combination of FMC/TFM allows for accurate reconstruction of the internal volume of materials and welds based on a projected 3D model.
