Parametric study of defect detection in pipes with bend using guided ultrasonic waves

Jin Jack Tan, Xin Wang, Ningqun Guo, Jee Hou Ho

    Research output: Chapter in Book/Report/Conference proceedingConference PaperOther


    The propagation behaviour of guided ultrasonic waves in a steel pipe with welded bend is studied by finite element simulation. The effectiveness of the longitudinal L(0,2) and torsional T(0,1) guided waves in detecting circumferential cut near the weld is investigated. In order to identify the presence of the defect, the reflection strength due to the cut is studied. The geometry of the weld is constructed based on common V-bevel butt joints and the anisotropy of the 316L stainless steel weld is included to correctly predict the scattering of ultrasonic waves. The finite element model is built to allow high accuracy. Detection of small circumferential cut (up to 60° circumferential extent) can be achieved with longitudinal L(0,2) mode. Detection of moderate to large circumferential cut can be achieved by torsional T(0,1) or longitudinal L(0,2) modes, with T(0,1) mode preferred due to its less mode conversion to higher order modes.

    Original languageEnglish
    Title of host publication1st International Conference on Computing and Precision Engineering, ICCPE 2015
    PublisherMATEC Web of Conferences
    Publication statusPublished - 2016
    EventInternational Conference on Computing and Precision Engineering 2015 - Nantou, Taiwan
    Duration: 27 Nov 201529 Nov 2015
    Conference number: 1st (Proceedings)

    Publication series

    NameMATEC Web of Conferences
    PublisherEDP Sciences
    ISSN (Print)2261-236X


    ConferenceInternational Conference on Computing and Precision Engineering 2015
    Abbreviated titleICCPE 2015
    Internet address

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