Investigation of the brittle fracture of the locomotive draw hook

0508086 - ÚFM 2020 RIV GB eng J - Journal Article
Nový, F. - Jambor, M. - Petrů, M. - Trško, L. - Fintová, Stanislava - Bokůvka, O.
Investigation of the brittle fracture of the locomotive draw hook.
Engineering Failure Analysis. Roč. 105, NOV (2019), s. 305-312. ISSN 1350-6307. E-ISSN 1873-1961
Institutional support: RVO:68081723
Keywords : brittle fracture * draw-hook failure * causes analysis
OECD category: Audio engineering, reliability analysis
Impact factor: 2.897, year: 2019
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S1350630719302146?via%3Dihub

Causes of the brittle fracture of the locomotive draw hook are investigated in this paper. The
failure occurred when the heavy freight train accelerated after stop at signal between the two
stations in winter time (the air temperature of −2 °C). The performed analysis showed that the
brittle fracture was caused by the superimposition of several factors. As the main factor heavily
coarsened microstructure, exhibiting insufficient toughness can be considered. Based on the
analysis, it was found that the relevant standard, prescribing mechanical properties of the locomotive
draw hooks, should be critically revised, to ensure safety operation in various conditions.
Permanent Link: http://hdl.handle.net/11104/0301455