Focusing techniques for long range ultrasonic guided wave inspection of pipelines

Joseph L. Rose, Li Zhang, Michael J. Avioli, Scott Lebsack, Peter J. Mudge

Research output: Contribution to conferencePaperpeer-review


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 languageEnglish (US)
StatePublished - Dec 1 2005
EventGTI Natural Gas Technologies 2005: What s New and What s Next - Orlando, FL, United States
Duration: Jan 30 2005Feb 2 2005


OtherGTI Natural Gas Technologies 2005: What s New and What s Next
Country/TerritoryUnited States
CityOrlando, FL

All Science Journal Classification (ASJC) codes

  • Energy(all)

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