Inducer blades used in a locomotive turbocharger were found damaged to varying extents servicing for 1000 km. The damages were in the form of fracture, crack and scrape. The fractures show L-shape, which were formed by propagation of axial crack and radial crack, Fractography investigation indicates the multiple origins fatigue is the main failure mechanism of the fractured and cracked blades. Fatigue crack origins are at the blade root with the coarse axial machining marks. The blade root thickness is over-small, which makes the average stress lever at blade root increase. Presence of the coarse axial machining marks at the blade root and over-small thickness of the blade root are responsible for the fatigue failure of the blades. Blades opposite the fractured blades were touched by the worm-shell outside the inducer due to swinging eccentrically of the inducer and the friction between them was operated so that the serious circumferential scrape took place at the edges of the blade-tips.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Failure investigation on failed inducer blades used in locomotive turbocharger


    Weitere Titelangaben:

    Fehlerprüfung an schadhaften Einlaufschaufeln in Lokomotiv-Turboladern


    Beteiligte:
    Yu, Zhi-wei (Autor:in) / Xu, Xiao-lei (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2009


    Format / Umfang :

    7 Seiten, 8 Bilder, 2 Tabellen, 2 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch






    Detection of surge precursors in locomotive turbocharger

    Menon, S. / Furman, A. / Krok, M. | Tema Archiv | 2007


    Cavitation performance of inducer with helical static blades

    Li, Xin / Li, Jiawen / Wang, Jue et al. | British Library Online Contents | 2016