Uticaj zaostalih napona u zavarenom spoju na otkaz rotornih bagera
The effect of residual stresses in welded joint on the failure of bucket wheel excavator
Abstract
Istraživanje uzroka pojave prslina u zavarenim spojevi-ma je pokazalo da zaostali naponi doprinose otkazu rotornih bagera SRs 1300.26/5 + VR ± 10 u eksploataciji. Izvedena su ispitivanja radi karakterizacije zavarenih spojeva (hemijski sastav, zatezne osobine, tvrdoća i udarna žilavost čelika, elektroda i zavarenih spojeva) i ocene sklonosti ka pojavi prslina. Na osnovu teorijske analize radnih i kritičnih napona napravljen je model zavarene konstrukcije rotora bagera i određena su kritična mesta za merenje deformacija mernim trakama. Utvrđeni su zaostali naponi usled zavarivanja i radni naponi za različite režime rada rotornog bagera i analiziran njihov uticaj na otkaze u eksploataciji. .
The investigation of welded joint cracking revealed that residual stresses contribute to the failure of bucket wheel excavator SRs 1300.26/5 + VR ± 10 in exploitation. Testing for welded joints characterization (chemical com-position, tensile properties, hardness and impact toughness of steel, electrodes and welded joints) and susceptibility to cracking assessment had been performed. Based on theoretical analysis of working and critical stresses, a model of bucket wheel excavator welded structure was developed and critical locations for strain gauge measurements were determined. Welding residual stresses were assessed as well as working stresses for different operating regimes of excavator and their effects on service failures. .
Keywords:
zavareni spoj / zaostali naponi / rotorni bager / radni naponi / working stresses / welded joints / residual stresses / bucket wheel excavatorSource:
Integritet i vek konstrukcija, 2008, 8, 1, 13-22Publisher:
- Institut za ispitivanje materijala, Beograd
Collections
Institution/Community
Institut za ispitivanje materijalaTY - JOUR AU - Arsić, Miodrag AU - Aleksić, Vujadin AU - Radaković, Zoran PY - 2008 UR - http://rims.institutims.rs/handle/123456789/71 AB - Istraživanje uzroka pojave prslina u zavarenim spojevi-ma je pokazalo da zaostali naponi doprinose otkazu rotornih bagera SRs 1300.26/5 + VR ± 10 u eksploataciji. Izvedena su ispitivanja radi karakterizacije zavarenih spojeva (hemijski sastav, zatezne osobine, tvrdoća i udarna žilavost čelika, elektroda i zavarenih spojeva) i ocene sklonosti ka pojavi prslina. Na osnovu teorijske analize radnih i kritičnih napona napravljen je model zavarene konstrukcije rotora bagera i određena su kritična mesta za merenje deformacija mernim trakama. Utvrđeni su zaostali naponi usled zavarivanja i radni naponi za različite režime rada rotornog bagera i analiziran njihov uticaj na otkaze u eksploataciji. . AB - The investigation of welded joint cracking revealed that residual stresses contribute to the failure of bucket wheel excavator SRs 1300.26/5 + VR ± 10 in exploitation. Testing for welded joints characterization (chemical com-position, tensile properties, hardness and impact toughness of steel, electrodes and welded joints) and susceptibility to cracking assessment had been performed. Based on theoretical analysis of working and critical stresses, a model of bucket wheel excavator welded structure was developed and critical locations for strain gauge measurements were determined. Welding residual stresses were assessed as well as working stresses for different operating regimes of excavator and their effects on service failures. . PB - Institut za ispitivanje materijala, Beograd T2 - Integritet i vek konstrukcija T1 - Uticaj zaostalih napona u zavarenom spoju na otkaz rotornih bagera T1 - The effect of residual stresses in welded joint on the failure of bucket wheel excavator EP - 22 IS - 1 SP - 13 VL - 8 UR - https://hdl.handle.net/21.15107/rcub_rims_71 ER -
@article{ author = "Arsić, Miodrag and Aleksić, Vujadin and Radaković, Zoran", year = "2008", abstract = "Istraživanje uzroka pojave prslina u zavarenim spojevi-ma je pokazalo da zaostali naponi doprinose otkazu rotornih bagera SRs 1300.26/5 + VR ± 10 u eksploataciji. Izvedena su ispitivanja radi karakterizacije zavarenih spojeva (hemijski sastav, zatezne osobine, tvrdoća i udarna žilavost čelika, elektroda i zavarenih spojeva) i ocene sklonosti ka pojavi prslina. Na osnovu teorijske analize radnih i kritičnih napona napravljen je model zavarene konstrukcije rotora bagera i određena su kritična mesta za merenje deformacija mernim trakama. Utvrđeni su zaostali naponi usled zavarivanja i radni naponi za različite režime rada rotornog bagera i analiziran njihov uticaj na otkaze u eksploataciji. ., The investigation of welded joint cracking revealed that residual stresses contribute to the failure of bucket wheel excavator SRs 1300.26/5 + VR ± 10 in exploitation. Testing for welded joints characterization (chemical com-position, tensile properties, hardness and impact toughness of steel, electrodes and welded joints) and susceptibility to cracking assessment had been performed. Based on theoretical analysis of working and critical stresses, a model of bucket wheel excavator welded structure was developed and critical locations for strain gauge measurements were determined. Welding residual stresses were assessed as well as working stresses for different operating regimes of excavator and their effects on service failures. .", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Integritet i vek konstrukcija", title = "Uticaj zaostalih napona u zavarenom spoju na otkaz rotornih bagera, The effect of residual stresses in welded joint on the failure of bucket wheel excavator", pages = "22-13", number = "1", volume = "8", url = "https://hdl.handle.net/21.15107/rcub_rims_71" }
Arsić, M., Aleksić, V.,& Radaković, Z.. (2008). Uticaj zaostalih napona u zavarenom spoju na otkaz rotornih bagera. in Integritet i vek konstrukcija Institut za ispitivanje materijala, Beograd., 8(1), 13-22. https://hdl.handle.net/21.15107/rcub_rims_71
Arsić M, Aleksić V, Radaković Z. Uticaj zaostalih napona u zavarenom spoju na otkaz rotornih bagera. in Integritet i vek konstrukcija. 2008;8(1):13-22. https://hdl.handle.net/21.15107/rcub_rims_71 .
Arsić, Miodrag, Aleksić, Vujadin, Radaković, Zoran, "Uticaj zaostalih napona u zavarenom spoju na otkaz rotornih bagera" in Integritet i vek konstrukcija, 8, no. 1 (2008):13-22, https://hdl.handle.net/21.15107/rcub_rims_71 .