Fatigue Failures in Industry - Case Studies

DS 30: Proceedings of DESIGN 2002, the 7th International Design Conference, Dubrovnik

Year: 2002
Editor: Marjanovic D.
Author: Domazet, Ž.; Piršic, T.
Section: Analysis Technologies
Page(s): 1153-1158


The paper presents some typical fatigue damages in industry and transport that were investigated by FESB Laboratory for Fatigue: the fatigue cracks and failures in large gear wheel of cement mill, fatigue failure of the main engine lateral support (at bulk carrier) and fatigue cracks at large portal crane in shipyard. Each case study includes the damage analysis, stress analysis by strain gauges and FEM and repair procedures. Inappropriate design of components subjected to variable loads and stress concentration are the common sources of all presented failures, so some general suggestions for correct design and repair procedures are proposed.

Keywords: Fatigue cracks and failures, repair welding, FEM


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