Ocena preostale čvrstoće zavarenog sfernog rezervoara sa prslinom
Residual strength assessment of cracked welded spherical storage tank
Апстракт
Dva sferna rezervoara za amonijak (zapremine 1000 m3) su ispitana 1998. i 1999. tehnikama bez razaranja (NDT) u skladu sa Propisima za periodičnu kontrolu. Ovi rezervoari su izrađeni 1979. od čelika StE 460 prema DIN, mikrolegiranog Cr-Ni-Ti, debljine 30 mm. Uočen je veliki broj poprečnih prslina u metalu šava i uzdužnih prslina u zoni-uticaja-toplote (ZUT) i po liniji stapanja unutrašnjih zavarenih spojeva. Da bi se procenila zaostala čvrstoća oba rezervoara, ploče 500 x 500 mm, su isečene radi hemijskog, metalurškog i mehaničkog ispitivanja. Ova ispitivanja su obuhvatala detaljno određivanje žilavosti standardnih Šarpi epruveta na instrumentiranom klatnu i ispitivanja mehanike loma na standardnim SEN(B) epruvetama za ocenu žilavosti loma. Na osnovu rezultata Šarpi ispitivanja i ispitivanja mehanike loma ocenjena je preostala čvrstoća sfernih rezervoara sa prslinama.
Two spherical storage tanks for ammonia (volume 1000 m3) have been tested in 1998 and 1999 by Non-Destructive Techniques (NDT) in accordance with the Periodic Inspection Regulations. These storage tanks have been constructed in 1979 of St.E460 steel according DIN, Cr-Ni-Ti microalloyed, 30 mm thick. The large number of transverse cracks in weld metal and longitudinal cracks in heat-affected-zone (HAZ) and along fusion line of inner welded joints have been detected. In order to assess the residual strength, of both storage tanks, plates 500 x 500 mm were cut for chemical, metallurgical and mechanical testing. These testing included detailed toughness testing of standard Charpy specimens on instrumented pendulum, and fracture mechanics testing on standard SEN(B) specimens for fracture toughness evaluation. Based on results of Charpy and fracture mechanics testing residual strength of cracked storage tanks has been assessed.
Кључне речи:
sferni rezervoar / preostala čvrstoća / instrumentirano Šarpi ispitivanje / spherical storage tank / residual strength / instrumented Charpy testingИзвор:
Integritet i vek konstrukcija, 2002, 2, 1-2, 20-22Издавач:
- Institut za ispitivanje materijala, Beograd
Институција/група
Inovacioni centarTY - JOUR AU - Adžiev, Todor AU - Sedmak, Aleksandar AU - Adžiev, Gorgi AU - Arsić, Miodrag A. PY - 2002 UR - https://machinery.mas.bg.ac.rs/handle/123456789/303 AB - Dva sferna rezervoara za amonijak (zapremine 1000 m3) su ispitana 1998. i 1999. tehnikama bez razaranja (NDT) u skladu sa Propisima za periodičnu kontrolu. Ovi rezervoari su izrađeni 1979. od čelika StE 460 prema DIN, mikrolegiranog Cr-Ni-Ti, debljine 30 mm. Uočen je veliki broj poprečnih prslina u metalu šava i uzdužnih prslina u zoni-uticaja-toplote (ZUT) i po liniji stapanja unutrašnjih zavarenih spojeva. Da bi se procenila zaostala čvrstoća oba rezervoara, ploče 500 x 500 mm, su isečene radi hemijskog, metalurškog i mehaničkog ispitivanja. Ova ispitivanja su obuhvatala detaljno određivanje žilavosti standardnih Šarpi epruveta na instrumentiranom klatnu i ispitivanja mehanike loma na standardnim SEN(B) epruvetama za ocenu žilavosti loma. Na osnovu rezultata Šarpi ispitivanja i ispitivanja mehanike loma ocenjena je preostala čvrstoća sfernih rezervoara sa prslinama. AB - Two spherical storage tanks for ammonia (volume 1000 m3) have been tested in 1998 and 1999 by Non-Destructive Techniques (NDT) in accordance with the Periodic Inspection Regulations. These storage tanks have been constructed in 1979 of St.E460 steel according DIN, Cr-Ni-Ti microalloyed, 30 mm thick. The large number of transverse cracks in weld metal and longitudinal cracks in heat-affected-zone (HAZ) and along fusion line of inner welded joints have been detected. In order to assess the residual strength, of both storage tanks, plates 500 x 500 mm were cut for chemical, metallurgical and mechanical testing. These testing included detailed toughness testing of standard Charpy specimens on instrumented pendulum, and fracture mechanics testing on standard SEN(B) specimens for fracture toughness evaluation. Based on results of Charpy and fracture mechanics testing residual strength of cracked storage tanks has been assessed. PB - Institut za ispitivanje materijala, Beograd T2 - Integritet i vek konstrukcija T1 - Ocena preostale čvrstoće zavarenog sfernog rezervoara sa prslinom T1 - Residual strength assessment of cracked welded spherical storage tank EP - 22 IS - 1-2 SP - 20 VL - 2 UR - https://hdl.handle.net/21.15107/rcub_machinery_303 ER -
@article{ author = "Adžiev, Todor and Sedmak, Aleksandar and Adžiev, Gorgi and Arsić, Miodrag A.", year = "2002", abstract = "Dva sferna rezervoara za amonijak (zapremine 1000 m3) su ispitana 1998. i 1999. tehnikama bez razaranja (NDT) u skladu sa Propisima za periodičnu kontrolu. Ovi rezervoari su izrađeni 1979. od čelika StE 460 prema DIN, mikrolegiranog Cr-Ni-Ti, debljine 30 mm. Uočen je veliki broj poprečnih prslina u metalu šava i uzdužnih prslina u zoni-uticaja-toplote (ZUT) i po liniji stapanja unutrašnjih zavarenih spojeva. Da bi se procenila zaostala čvrstoća oba rezervoara, ploče 500 x 500 mm, su isečene radi hemijskog, metalurškog i mehaničkog ispitivanja. Ova ispitivanja su obuhvatala detaljno određivanje žilavosti standardnih Šarpi epruveta na instrumentiranom klatnu i ispitivanja mehanike loma na standardnim SEN(B) epruvetama za ocenu žilavosti loma. Na osnovu rezultata Šarpi ispitivanja i ispitivanja mehanike loma ocenjena je preostala čvrstoća sfernih rezervoara sa prslinama., Two spherical storage tanks for ammonia (volume 1000 m3) have been tested in 1998 and 1999 by Non-Destructive Techniques (NDT) in accordance with the Periodic Inspection Regulations. These storage tanks have been constructed in 1979 of St.E460 steel according DIN, Cr-Ni-Ti microalloyed, 30 mm thick. The large number of transverse cracks in weld metal and longitudinal cracks in heat-affected-zone (HAZ) and along fusion line of inner welded joints have been detected. In order to assess the residual strength, of both storage tanks, plates 500 x 500 mm were cut for chemical, metallurgical and mechanical testing. These testing included detailed toughness testing of standard Charpy specimens on instrumented pendulum, and fracture mechanics testing on standard SEN(B) specimens for fracture toughness evaluation. Based on results of Charpy and fracture mechanics testing residual strength of cracked storage tanks has been assessed.", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Integritet i vek konstrukcija", title = "Ocena preostale čvrstoće zavarenog sfernog rezervoara sa prslinom, Residual strength assessment of cracked welded spherical storage tank", pages = "22-20", number = "1-2", volume = "2", url = "https://hdl.handle.net/21.15107/rcub_machinery_303" }
Adžiev, T., Sedmak, A., Adžiev, G.,& Arsić, M. A.. (2002). Ocena preostale čvrstoće zavarenog sfernog rezervoara sa prslinom. in Integritet i vek konstrukcija Institut za ispitivanje materijala, Beograd., 2(1-2), 20-22. https://hdl.handle.net/21.15107/rcub_machinery_303
Adžiev T, Sedmak A, Adžiev G, Arsić MA. Ocena preostale čvrstoće zavarenog sfernog rezervoara sa prslinom. in Integritet i vek konstrukcija. 2002;2(1-2):20-22. https://hdl.handle.net/21.15107/rcub_machinery_303 .
Adžiev, Todor, Sedmak, Aleksandar, Adžiev, Gorgi, Arsić, Miodrag A., "Ocena preostale čvrstoće zavarenog sfernog rezervoara sa prslinom" in Integritet i vek konstrukcija, 2, no. 1-2 (2002):20-22, https://hdl.handle.net/21.15107/rcub_machinery_303 .