The bolt-hole cold-expansion process has been demonstrated by laboratory tests to significantly affect the initiation and propagation of fatigue cracks from rail bolt holes such that a reduction of the incidence of rail-bolt-hole failure in cold-expanded rail would be expected. A field-verification experiment was implemented in 1977 and reported in Volume I of this report. This volume contains the results of the field experiment, and examination of the effect of fatigue ratio (R) on the observed laboratory fatigue-life improvement of cold-expanded bolt holes, an investigation of crack growth of rails in a vacuum environment, and a comparison of the fatigue performance of cold-expanded bolt holes with rail flashwelds.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Sleeve Expansion of Bolt Holes in Railroad Rail. Volume III - Field Experiment Results


    Contributors:
    D. V. Lindh (author) / R. Q. Taylor (author) / D. M. Rose (author)

    Publication date :

    1980


    Size :

    111 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






    Optimisation of Stresses Around Holes Using Sleeve/Bolt Combinations

    Piperias, P. / Heller, M. / Institution of Engineers, Australia et al. | British Library Conference Proceedings | 1993


    Stresses at rail joints as influenced by bolt holes

    Koyama, K. / Sasaki, N. | Engineering Index Backfile | 1960


    Initial Results from the BOLT Flight Experiment

    Wheaton, Bradley M. / Butler, Cameron / McKiernan, Gregory et al. | AIAA | 2022