Damage Occurrence in Welded Structures of the Bucket-Wheel Boom

Author:

Arsić Miodrag1,Flajs Zeljko1,Aleksandar Sedmak1,Veg Emil1,Sedmak Simon2

Affiliation:

1. University of Belgrade

2. Innovation Center of the Faculty of Mechanical Engineering

Abstract

Causes of damage occurrence in vital components of welded structures of the bucket-wheel excavator boom (DU1) at the coal landfill of the thermal power plant 'Nikola Tesla A' in Obrenovac (Serbia) are investigated. Bucket-wheel excavator was produced by French company 'Ameco' and it moves along the circular track. Taking into account lack of technical documentation, all tests and were carried out under the assumption that welded structures were made of structural steels S355 and S235. Investigation of causes of damage occurrence are based on results of non-destructive tests (NDT) and tensometric measurements.

Publisher

Trans Tech Publications, Ltd.

Reference16 articles.

1. S. Sedmak, A. Sedmak, M. Arsić, J. Tuma, An Experimental Verification of Numeralical Models for the Fracture and Fatigue of Welded Structures, Materials and technology, 41 (2007) 173-178.

2. M. Arsić, M. Mladenović, A. Veljović, M. Rakin, Z. Radaković, Reliability of Critical Welded Joints in Responsible Support Structures of Bucket Wheel Excavator, XIX International Conference on Material handling, constructions and logistics – MHCL '09, Belgrade, 2009, 133-138.

3. S. Bošnjak, N. Zrnić, A. Simonović, D. Momčilović, Failure analysis of the end eye connection of the bucket wheel excavator portal tie-rod support, Engineering Failure Analysis, 16 (2009) 740-50.

4. E. Rusiński, J. Czmochowski, A. Iluk, M. Kowalczyk, An analysis of the causes of a BWE counterweight boom support fracture, Engineering Failure Analysis, 17 (2010) 179-91.

5. M. Arsić, S. Bošnjak, N. Zrnić, A. Sedmak, N. Gnjatović, Bucket wheel failure caused by residual stresses in welded joints, Engineering Failure Analysis, 18 (2011) 700-712.

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