Some common portable aluminium gas cylinders have shown a tendency to develop cracking. This cracking has in some cases led to leaks and on occasions to violent and sometimes fatal failures. There are a number of features of this cracking which have not been explained properly. Previous estimates of the growth rate of these cracks under sustained load been developed from specimen testing. As shown in this paper these data predict crack growth rates which are too slow, by very large factors, when considered in light of actual failures that have been observed. It also appears that crack growth can be rapid even in cylinders with low levels of lead. This paper presents a numerical simulation of the growth of cracks in aluminium cylinders based on local stresses in vicinity of crack edge. This information is related to cracks actually found in cylinders that have leaked or failed in service. From this procedure an equation for the crack growth rate is developed which is much higher that determined from small specimen testing. This paper concludes that additional factors, which have not been replicated adequately in testing, must influence crack growth rates.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Crack growth in aluminium cylinders


    Contributors:


    Publication date :

    2000


    Size :

    6 Seiten, 14 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Linerless aluminium cylinder hypereutectic aluminium alloy cylinders

    Hartley,J. / Porsche / Schmidt,K.,Neckarsulm | Automotive engineering | 1976


    Inspection of aluminium gas cylinders

    Price, J.W.H. / Ibrahim, R.N. / Ischenko, D. | Tema Archive | 1996


    Fatigue Crack Growth in Anodised Aluminium Alloys

    Cree, A. M. / Weidmann, G. W. / Royal Institution of Naval Architects | British Library Conference Proceedings | 2006


    Crack Growth in Aluminium Plates Repaired with Composite Reinforcements

    Aakkula, J. J. / Saarela, O. / International Committee on Aeronautical Fatigue | British Library Conference Proceedings | 1995


    Anisotropic Fatigue Crack Growth in High-Strength Aluminium Alloys

    Van Der Veen, Sjoerd O. / Dijkers, Hugo P. / Alderliesten, Rene C. | AIAA | 2016