Failure of a Bucket-Wheel Stacker Reclaimer: Metallographic and Structural Analyses
The structural collapse of an iron-ore bucket-wheel stacker reclaimer at the beginning of operation was investigated by means of mechanical tests, microstructural characterization, and computational structural analysis. The mechanical failure was a consequence of a brittle fracture by cleavage. The crack followed the heat-affected zone of a welded joint connecting a rectangular hollow section member and a plate flange. The main factors contributing to failure were related with a combination of design-in and manufacturing-in factors like high load-strength ratio at the point of failure, local stress concentration as a result of geometry restrictions, and weld defects. This particular section...
L.S. Araujo, L.H. de Almeida, E.M. Batista, A. Landesmann, Failure of a Bucket-Wheel Stacker Reclaimer: Metallographic and Structural Analyses, Handbook of Case Histories in Failure Analysis, Vol 3, Edited By Larry Berardinis, ASM International, 2019, p 177–182, https://doi.org/10.31399/asm.fach.v03.c9001777
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