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Izvorni znanstveni članak
Integrity assessment of bucket wheel excavator welded structures by using the single selection method
Marko Rakin
; University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11000 Belgrade, Serbia
Miodrag Arsić
; University of Belgrade, Institute for Material Testing, Bulevar Vojvode Mišića 43, Belgrade, Serbia
Srđan Bošnjak
; University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia
Nebojša Gnjatović
; University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia
Bojan Međo
; University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11000 Belgrade, Serbia
| Puni tekst: engleski, pdf (1 MB) | str. 811-816 | citiraj | |
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APA 6th Edition Rakin, M., Arsić, M., Bošnjak, S., Gnjatović, N. i Međo, B. (2013). Integrity assessment of bucket wheel excavator welded structures by using the single selection method. Tehnički vjesnik, 20 (5), 811-816. Preuzeto s https://hrcak.srce.hr/109789 MLA 8th Edition Rakin, Marko, et al. "Integrity assessment of bucket wheel excavator welded structures by using the single selection method." Tehnički vjesnik, vol. 20, br. 5, 2013, str. 811-816. https://hrcak.srce.hr/109789. Citirano 08.03.2021. Chicago 17th Edition Rakin, Marko, Miodrag Arsić, Srđan Bošnjak, Nebojša Gnjatović i Bojan Međo. "Integrity assessment of bucket wheel excavator welded structures by using the single selection method." Tehnički vjesnik 20, br. 5 (2013): 811-816. https://hrcak.srce.hr/109789 Harvard Rakin, M., et al. (2013). 'Integrity assessment of bucket wheel excavator welded structures by using the single selection method', Tehnički vjesnik, 20(5), str. 811-816. Preuzeto s: https://hrcak.srce.hr/109789 (Datum pristupa: 08.03.2021.) Vancouver Rakin M, Arsić M, Bošnjak S, Gnjatović N, Međo B. Integrity assessment of bucket wheel excavator welded structures by using the single selection method. Tehnički vjesnik [Internet]. 2013 [pristupljeno 08.03.2021.];20(5):811-816. Dostupno na: https://hrcak.srce.hr/109789 IEEE M. Rakin, M. Arsić, S. Bošnjak, N. Gnjatović i B. Međo, "Integrity assessment of bucket wheel excavator welded structures by using the single selection method", Tehnički vjesnik, vol.20, br. 5, str. 811-816, 2013. [Online]. Dostupno na: https://hrcak.srce.hr/109789. [Citirano: 08.03.2021.] |
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| Puni tekst: hrvatski, pdf (1 MB) | str. 811-816 | citiraj | |
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APA 6th Edition Rakin, M., Arsić, M., Bošnjak, S., Gnjatović, N. i Međo, B. (2013). Procjena integriteta zavarenih spojeva rotornog bagera primjenom metode jednostrukog izbora. Tehnički vjesnik, 20 (5), 811-816. Preuzeto s https://hrcak.srce.hr/109789 MLA 8th Edition Rakin, Marko, et al. "Procjena integriteta zavarenih spojeva rotornog bagera primjenom metode jednostrukog izbora." Tehnički vjesnik, vol. 20, br. 5, 2013, str. 811-816. https://hrcak.srce.hr/109789. Citirano 08.03.2021. Chicago 17th Edition Rakin, Marko, Miodrag Arsić, Srđan Bošnjak, Nebojša Gnjatović i Bojan Međo. "Procjena integriteta zavarenih spojeva rotornog bagera primjenom metode jednostrukog izbora." Tehnički vjesnik 20, br. 5 (2013): 811-816. https://hrcak.srce.hr/109789 Harvard Rakin, M., et al. (2013). 'Procjena integriteta zavarenih spojeva rotornog bagera primjenom metode jednostrukog izbora', Tehnički vjesnik, 20(5), str. 811-816. Preuzeto s: https://hrcak.srce.hr/109789 (Datum pristupa: 08.03.2021.) Vancouver Rakin M, Arsić M, Bošnjak S, Gnjatović N, Međo B. Procjena integriteta zavarenih spojeva rotornog bagera primjenom metode jednostrukog izbora. Tehnički vjesnik [Internet]. 2013 [pristupljeno 08.03.2021.];20(5):811-816. Dostupno na: https://hrcak.srce.hr/109789 IEEE M. Rakin, M. Arsić, S. Bošnjak, N. Gnjatović i B. Međo, "Procjena integriteta zavarenih spojeva rotornog bagera primjenom metode jednostrukog izbora", Tehnički vjesnik, vol.20, br. 5, str. 811-816, 2013. [Online]. Dostupno na: https://hrcak.srce.hr/109789. [Citirano: 08.03.2021.] |
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Sažetak
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 1760×32/5. 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.
Ključne riječi
bucket wheel excavator; fatigue; integrity assessment; non-destructive tests; single selection method; welded structure
Hrčak ID: 109789
URI
https://hrcak.srce.hr/109789
Moj profil
Srce