What is the difference between “skip distance” and “overall height” in phased array measurements?

In phased array measurements, skip distance is defined as the distance traveled by the ultrasonic beam from the transducer to the first interface and then back again to the transducer after reflection. This measurement is critical for understanding the geometry of the scanned area, particularly in assessing how effectively a specific angle of incidence can be used for detecting flaws or features within a material.

While the concept of skip distance relates to the propagation of the ultrasonic waves and their interaction with interfaces, overall height typically does not define a specific measurement in this context. Retry to keep each measurement distinct as they serve different purposes in inspection criteria. Understanding these definitions helps technicians properly evaluate how to set up and interpret phased array inspections to ensure comprehensive material analysis.