Phased array ultrasonics is a type of nondestructive testing (NDT) method that uses ultrasonic waves to detect and evaluate defects in materials. Unlike traditional ultrasonic testing, which uses a single ultrasonic transducer to generate and detect sound waves, phased array ultrasonics uses an array of transducers that are electronically controlled and coordinated to produce and receive the ultrasonic waves.

This allows the test to be performed quickly and efficiently, and provides greater control over the direction and focus of the ultrasonic waves. Phased array ultrasonics is commonly used to inspect large or complex structures, such as aircraft, bridges, and pipelines, for defects that could affect their strength and performance.