Effect of welded joint imperfection on the integrity of pipe elbows subjected to internal pressure
Abstract
Since local defects reduce the load-carrying capacity and deformation ability of a piping system, an analysis is undertaken to quantify the influence of weld defects on integrity of the pipe elbows subjected to internal pressure. Incompletely filled groove is examined, because this type of defect was previously detected by ultrasonic measurement on the inner surface of the pipeline from a hydro-power plant. Three-dimensional finite element analysis is conducted using Abaqus software package. The influence of weld defect geometry (its depth, length and location) on the elbow integrity is determined. Additionally, decrease of load carrying capacity is determined for the case when a crack has initiated at the bottom of the defect. The influence of finite element type (hexahedral or tetrahedral) is examined.
Keywords:
elbow / finite element method / incompletely filled groove / pipe / structural integrity / welded jointSource:
Tehnicki vjesnik-Technical Gazette, 2013, 20, 2, 285-290Publisher:
- University of Osijek, Tech Fac, Slavonski Brod
Funding / projects:
- Development of new revitalization methodologies for hydro power plant turbine and hydro-mechanical equipment in relation to causes of material degradation (RS-MESTD-Technological Development (TD or TR)-35002)
- Micromechanical criteria of damage and fracture (RS-MESTD-Basic Research (BR or ON)-174004)
- EUREKA E!5348
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Dimić, Ivana AU - Arsić, Miodrag AU - Međo, Bojan AU - Stefanović, Ana AU - Grabulov, Vencislav AU - Rakin, Marko PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2515 AB - Since local defects reduce the load-carrying capacity and deformation ability of a piping system, an analysis is undertaken to quantify the influence of weld defects on integrity of the pipe elbows subjected to internal pressure. Incompletely filled groove is examined, because this type of defect was previously detected by ultrasonic measurement on the inner surface of the pipeline from a hydro-power plant. Three-dimensional finite element analysis is conducted using Abaqus software package. The influence of weld defect geometry (its depth, length and location) on the elbow integrity is determined. Additionally, decrease of load carrying capacity is determined for the case when a crack has initiated at the bottom of the defect. The influence of finite element type (hexahedral or tetrahedral) is examined. PB - University of Osijek, Tech Fac, Slavonski Brod T2 - Tehnicki vjesnik-Technical Gazette T1 - Effect of welded joint imperfection on the integrity of pipe elbows subjected to internal pressure EP - 290 IS - 2 SP - 285 VL - 20 UR - https://hdl.handle.net/21.15107/rcub_technorep_2515 ER -
@article{ author = "Dimić, Ivana and Arsić, Miodrag and Međo, Bojan and Stefanović, Ana and Grabulov, Vencislav and Rakin, Marko", year = "2013", abstract = "Since local defects reduce the load-carrying capacity and deformation ability of a piping system, an analysis is undertaken to quantify the influence of weld defects on integrity of the pipe elbows subjected to internal pressure. Incompletely filled groove is examined, because this type of defect was previously detected by ultrasonic measurement on the inner surface of the pipeline from a hydro-power plant. Three-dimensional finite element analysis is conducted using Abaqus software package. The influence of weld defect geometry (its depth, length and location) on the elbow integrity is determined. Additionally, decrease of load carrying capacity is determined for the case when a crack has initiated at the bottom of the defect. The influence of finite element type (hexahedral or tetrahedral) is examined.", publisher = "University of Osijek, Tech Fac, Slavonski Brod", journal = "Tehnicki vjesnik-Technical Gazette", title = "Effect of welded joint imperfection on the integrity of pipe elbows subjected to internal pressure", pages = "290-285", number = "2", volume = "20", url = "https://hdl.handle.net/21.15107/rcub_technorep_2515" }
Dimić, I., Arsić, M., Međo, B., Stefanović, A., Grabulov, V.,& Rakin, M.. (2013). Effect of welded joint imperfection on the integrity of pipe elbows subjected to internal pressure. in Tehnicki vjesnik-Technical Gazette University of Osijek, Tech Fac, Slavonski Brod., 20(2), 285-290. https://hdl.handle.net/21.15107/rcub_technorep_2515
Dimić I, Arsić M, Međo B, Stefanović A, Grabulov V, Rakin M. Effect of welded joint imperfection on the integrity of pipe elbows subjected to internal pressure. in Tehnicki vjesnik-Technical Gazette. 2013;20(2):285-290. https://hdl.handle.net/21.15107/rcub_technorep_2515 .
Dimić, Ivana, Arsić, Miodrag, Međo, Bojan, Stefanović, Ana, Grabulov, Vencislav, Rakin, Marko, "Effect of welded joint imperfection on the integrity of pipe elbows subjected to internal pressure" in Tehnicki vjesnik-Technical Gazette, 20, no. 2 (2013):285-290, https://hdl.handle.net/21.15107/rcub_technorep_2515 .