When phased array interacting waves combine together, what is this phenomenon called?

The phenomenon of combining interacting waves is referred to as constructive interference when the waves align in such a way that their amplitudes reinforce each other. In the context of phased array technology, this means that when multiple ultrasonic waves are emitted from different elements of the array, and they reach a certain point in space in phase with one another, their amplitudes add up, resulting in a stronger signal.

This is critical in non-destructive testing as it allows for enhanced detection sensitivity and improved resolution of the signals being studied. When constructing a beam using phased array techniques, the ability to achieve constructive interference maximizes the effectiveness of the inspection by producing a clearer and more defined image or signal response. Thus, understanding this concept is fundamental for anyone working with phased array systems and interpreting their results effectively.