TY  - JOUR
AU  - Rakin, Marko
AU  - Arsić, Miodrag
AU  - Bošnjak, Srđan
AU  - Gnjatović, Nebojša
AU  - Međo, Bojan
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2449
AB  - In order to reduce the testing costs for structural welded joints and production losses due to excavator standstill, a new method for integrity and reliability assessment of welded joints during exploitation of bucket wheel excavators has been developed. In this paper, a part of non-destructive testing results for the butt welded joints on bucket wheel boom, counterweight boom and discharging boom is presented, prior to the repair of the collapsed bucket wheel excavator SchRs 1760x32/5. It has been in operational mode for 17 years prior to the collapse, in other words it has been subjected to aproximatelly 2 125.000 cycles of variable loading. Hypergeometric distribution has been used for calculation of probability that x welded joints, which comprise n welded joints with defects, would be selected for testing out of overall number of joints Q. The integrity assessment for welded structures of bucket wheel excavators has been performed on the basis of defect analysis and probabilistic assessment of the fatigue crack growth in welded joints. By using this method, the testing costs have been reduced by 70 % through optimized scope of the inspections and time periods between them.
PB  - University of Osijek, Tech Fac, Slavonski Brod
T2  - Tehnicki vjesnik-Technical Gazette
T1  - Integrity assessment of bucket wheel excavator welded structures by using the single selection method
EP  - 816
IS  - 5
SP  - 811
VL  - 20
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2449
ER  - 

@article{
author = "Rakin, Marko and Arsić, Miodrag and Bošnjak, Srđan and Gnjatović, Nebojša and Međo, Bojan",
year = "2013",
abstract = "In order to reduce the testing costs for structural welded joints and production losses due to excavator standstill, a new method for integrity and reliability assessment of welded joints during exploitation of bucket wheel excavators has been developed. In this paper, a part of non-destructive testing results for the butt welded joints on bucket wheel boom, counterweight boom and discharging boom is presented, prior to the repair of the collapsed bucket wheel excavator SchRs 1760x32/5. It has been in operational mode for 17 years prior to the collapse, in other words it has been subjected to aproximatelly 2 125.000 cycles of variable loading. Hypergeometric distribution has been used for calculation of probability that x welded joints, which comprise n welded joints with defects, would be selected for testing out of overall number of joints Q. The integrity assessment for welded structures of bucket wheel excavators has been performed on the basis of defect analysis and probabilistic assessment of the fatigue crack growth in welded joints. By using this method, the testing costs have been reduced by 70 % through optimized scope of the inspections and time periods between them.",
publisher = "University of Osijek, Tech Fac, Slavonski Brod",
journal = "Tehnicki vjesnik-Technical Gazette",
title = "Integrity assessment of bucket wheel excavator welded structures by using the single selection method",
pages = "816-811",
number = "5",
volume = "20",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2449"
}

Rakin, M., Arsić, M., Bošnjak, S., Gnjatović, N.,& Međo, B.. (2013). Integrity assessment of bucket wheel excavator welded structures by using the single selection method. in Tehnicki vjesnik-Technical Gazette
University of Osijek, Tech Fac, Slavonski Brod., 20(5), 811-816.
https://hdl.handle.net/21.15107/rcub_technorep_2449

Rakin M, Arsić M, Bošnjak S, Gnjatović N, Međo B. Integrity assessment of bucket wheel excavator welded structures by using the single selection method. in Tehnicki vjesnik-Technical Gazette. 2013;20(5):811-816.
https://hdl.handle.net/21.15107/rcub_technorep_2449 .

Rakin, Marko, Arsić, Miodrag, Bošnjak, Srđan, Gnjatović, Nebojša, Međo, Bojan, "Integrity assessment of bucket wheel excavator welded structures by using the single selection method" in Tehnicki vjesnik-Technical Gazette, 20, no. 5 (2013):811-816,
https://hdl.handle.net/21.15107/rcub_technorep_2449 .