A long range ultrasonic guided wave focusing technique for pipelines with improved defect signal amplitude signal to noise ratio, and penetration power is developed. Focusing techniques consequently reduces the false alarm rate, increases the probability of detection, hence inspection confidence, and also leads to excellent defect circumferential length and depth measurement potential. The focusing techniques include frequency tuning for axisymmetric loading of the pipe, natural focusing as a result of partial loading around the circumference of the pipe, and phased array focusing via multi-element array excitation and receiving with time delay profiling. Sample results are provided that points out the significant advantages of beam focusing in pipeline inspection compared to current inspection techniques. This is an abstract of a paper presented at the Gas Technology Institute's Natural Gas Technologies 2005 Conference (Orlando, FL 1/30/2005-2/2/2005).
|Original language||English (US)|
|State||Published - Dec 1 2005|
|Event||GTI Natural Gas Technologies 2005: What s New and What s Next - Orlando, FL, United States|
Duration: Jan 30 2005 → Feb 2 2005
|Other||GTI Natural Gas Technologies 2005: What s New and What s Next|
|Period||1/30/05 → 2/2/05|
All Science Journal Classification (ASJC) codes