Though butt-welds are among the most preferred joining methods in aerostructures, their strength dependence on inelastic mechanics is generally the least understood. This study investigated experimental strain distributions across a thick aluminum U-grooved weld and identified two weld process considerations for improving the multipass weld strength. The extreme thermal expansion and contraction gradient of the fusion heat input across the groove tab thickness produces severe peaking, which induces bending under uniaxial loading. The filler strain-hardening decreased with increasing filler pass sequence, producing the weakest welds on the last pass side. Current welding schedules unknowingly compound these effects which reduce the weld strength. A depeaking index model was developed to select filler pass thicknesses, pass numbers, and sequences to improve depeaking in the welding process. The intent is to combine the strongest weld pass side with the peaking induced bending tension to provide a more uniform stress and stronger weld under axial tensile loading.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    U-groove aluminum weld strength improvement


    Weitere Titelangaben:

    Erhöhung der Festigkeit einer Aluminium-U-Schweißnaht


    Beteiligte:
    Verderaime, V. (Autor:in) / Vaughan, R. (Autor:in)


    Erscheinungsdatum :

    1996


    Format / Umfang :

    6 Seiten, 3 Tabellen, 7 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    U-Groove Aluminum Weld Strength Improvement

    Verderaime, V. | Online Contents | 1997


    U-Groove Aluminum Weld Strength Improvement

    V. Verderaime / R. Vaughan | AIAA | 1997


    U-Groove Aluminum Weld Strength Improvement

    Verderaime, V. / Vaughan, R. / AIAA et al. | British Library Conference Proceedings | 1996


    U-groove aluminum weld strength improvement

    Verderaime, V. / Vaughan, R. | AIAA | 1996


    Weld width indicates weld strength

    Nunes, A. C. J. / Novak, H. L. / Mcllwain, M. C. | NTRS | 1982