A modified magnetic Barkhausen noise (MBN) method was applied to obtain the residual stress distribution in an API X65 pipeline weldment. Different weldment microstructures affected the magnetic response and yielded different MBN values. In order to reflect the microstructural variations in the heat-affected zone (HAZ), calibration samples were extracted from four different regions: weld metal, coarse-grained HAZ (CGHAZ), fine-grained HAZ (FGHAZ), and base metal. This approach yielded that compressive residual stresses existed in the CGHAZ contrary to the tensile results using the base-metal-based calibration method. Compared with the results from the mechanical saw-cutting method, it can be concluded that the data obtained with the HAZ-based calibration method were more reliable.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Determination of welding residual stress distribution in API X65 pipeline using a modified magnetic Barkhausen noise method


    Additional title:

    Bestimmung der Verteilung von Schweißeigenspannungen in API X65 Pipelines unter Anwendung eines modifizierten Barkhausen-Verfahren


    Contributors:
    Ju, Jang-Bog (author) / Lee, Jung-Suk (author) / Jang, Jae-il (author) / Kim, Woo-sik (author) / Kwon, Dongil (author)


    Publication date :

    2003


    Size :

    6 Seiten, 15 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Magnetic Barkhausen noise measurements on magnetized pipeline steel

    Hsu, A. / Clapham, L.C. / Atherton, D.L. | Tema Archive | 2003



    Laser Welding Non Destructive Testing Using Barkhausen Noise

    Molinero, I. / Galerne / Breugnot | British Library Conference Proceedings | 1994