Ultrasonic guided waves are used for the rapid screening of pipelines in service and simple,
standard testing procedures are already defined. The implementation of the method enables
the localization of the defects along the length of the pipe and offers a rough estimate of
defect size. In this article we present a systematic analysis of the effect of pipe size, defect
size, guided wave mode and frequency on the reflection from notches. The maximum and
minimum value of the reflection coefficient at varying axial extent are identified and used for …