BEHAVIOR OF COMPRESSIVE RESIDUAL STRESSES IN HIGH STRENGTH STEEL WELDS INDUCED BY HIGH FREQUENCY MECHANICAL IMPACT TREATMENT

Mansoor Khurshid*, Zuheir Barsoum, Gary Marquis

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    2 Citations (Scopus)

    Abstract

    Residual stress state plays an important role in the fatigue life of welded structures. They can be beneficial or detrimental, depending on the nature of residual stresses. High frequency mechanical impact (HFMI) treatment is a post-weld fatigue improvement technique for welded joints. In this research work the behavior of compressive residual stresses induced in welded joints in high strength steels (HSS) by HFMI treatment has been investigated. Longitudinal non load carrying attachments in HSS are tested with constant amplitude (CA) and variable amplitude (VA) loading. Stress concentration factors have been calculated using Finite Element Analysis (PEA). Residual stresses have been measured at different cycles during fatigue testing using X-ray diffraction technique. It is observed that the induced residual stresses are quite stable with some relaxation in CA and VA loading. The overloads in VA loading seem to be more detrimental. Relaxation of residual stresses is more obvious in VA tests.

    Original languageEnglish
    Title of host publicationPROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2013, VOL 5
    EditorsDL Stang, RT Hallman, W Springer, Y Kwon, RS Hafner
    PublisherAmerican Society of Mechanical Engineers
    Number of pages8
    Volume5
    ISBN (Print)978-0-7918-5569-0
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA4 Article in a conference publication
    EventASME Pressure Vessels and Piping Conference - Paris, France
    Duration: 14 Jul 201318 Jul 2013

    Conference

    ConferenceASME Pressure Vessels and Piping Conference
    Abbreviated titlePVP
    CountryFrance
    CityParis
    Period14/07/201318/07/2013

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