TY  - CONF
AU  - Gubeljak, Nenad
AU  - Bakić, K.
AU  - Jakl, F.
AU  - Veg, Aleksandar
AU  - Veg, Emil
AU  - Predan, J.
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1736
AB  - There are many on-line overhead line (OHL) thermal monitoring systems, which are commonly known as dynamic line rating (DLR) systems using different sensors and approaches. Interaction between sag, tension and conductor temperature of OHL enables different approaches using sensors for detecting needed parameters for line ratings. The ambition of this project was to consider deformation and vibration behaviour or structural critical components of tower as a source of information for conductor tension parameters. Vibration behaviour or structural critical components is an important source of information for deciding on the mode of exploitation by a rapid adaptation to existing conditions currently encountered. The concept of monitoring is based on stress-strain analysis, vibration and deflection behavior of structural component. Correlation between tower deflections and conductor tensions are well-defined in case of large angle of tower. In tested polygon of 220 kV OHL there was section with large tower angle and situation of right-of-way in forest, which played barrier for wind. So, condition for hot spot section of line was likely fulfilled. The monitoring system based on algorithm which incorporates the geometric characteristics via calibration function. Dynamic line rating (DLR) systems is supported by numerical analysis of the structural components of the model enables simulation of mechanical behaviour and deflection of conductor and tower.
PB  - Cigre
C3  - 2013 CIGRE Auckland Symposium
T1  - An attempt to OHL dynamic line rating by strain-vibration detection of tower
VL  - 2013-September
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1736
ER  - 

@conference{
author = "Gubeljak, Nenad and Bakić, K. and Jakl, F. and Veg, Aleksandar and Veg, Emil and Predan, J.",
year = "2013",
abstract = "There are many on-line overhead line (OHL) thermal monitoring systems, which are commonly known as dynamic line rating (DLR) systems using different sensors and approaches. Interaction between sag, tension and conductor temperature of OHL enables different approaches using sensors for detecting needed parameters for line ratings. The ambition of this project was to consider deformation and vibration behaviour or structural critical components of tower as a source of information for conductor tension parameters. Vibration behaviour or structural critical components is an important source of information for deciding on the mode of exploitation by a rapid adaptation to existing conditions currently encountered. The concept of monitoring is based on stress-strain analysis, vibration and deflection behavior of structural component. Correlation between tower deflections and conductor tensions are well-defined in case of large angle of tower. In tested polygon of 220 kV OHL there was section with large tower angle and situation of right-of-way in forest, which played barrier for wind. So, condition for hot spot section of line was likely fulfilled. The monitoring system based on algorithm which incorporates the geometric characteristics via calibration function. Dynamic line rating (DLR) systems is supported by numerical analysis of the structural components of the model enables simulation of mechanical behaviour and deflection of conductor and tower.",
publisher = "Cigre",
journal = "2013 CIGRE Auckland Symposium",
title = "An attempt to OHL dynamic line rating by strain-vibration detection of tower",
volume = "2013-September",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1736"
}

Gubeljak, N., Bakić, K., Jakl, F., Veg, A., Veg, E.,& Predan, J.. (2013). An attempt to OHL dynamic line rating by strain-vibration detection of tower. in 2013 CIGRE Auckland Symposium
Cigre., 2013-September.
https://hdl.handle.net/21.15107/rcub_machinery_1736

Gubeljak N, Bakić K, Jakl F, Veg A, Veg E, Predan J. An attempt to OHL dynamic line rating by strain-vibration detection of tower. in 2013 CIGRE Auckland Symposium. 2013;2013-September.
https://hdl.handle.net/21.15107/rcub_machinery_1736 .

Gubeljak, Nenad, Bakić, K., Jakl, F., Veg, Aleksandar, Veg, Emil, Predan, J., "An attempt to OHL dynamic line rating by strain-vibration detection of tower" in 2013 CIGRE Auckland Symposium, 2013-September (2013),
https://hdl.handle.net/21.15107/rcub_machinery_1736 .

TY  - CONF
AU  - Gubeljak, Nenad
AU  - Rakin, Marko
AU  - Predan, J.
AU  - Međo, Bojan
AU  - Sedmak, Aleksandar
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1321
PB  - Scientific Society for Mechanical Engineering
C3  - 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011
T1  - Weld metal tensile strength determined by testing flat micro tensile and round tensile specimens
EP  - 72
SP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1741
ER  - 

@conference{
author = "Gubeljak, Nenad and Rakin, Marko and Predan, J. and Međo, Bojan and Sedmak, Aleksandar",
year = "2011",
publisher = "Scientific Society for Mechanical Engineering",
journal = "28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011",
title = "Weld metal tensile strength determined by testing flat micro tensile and round tensile specimens",
pages = "72-71",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1741"
}

Gubeljak, N., Rakin, M., Predan, J., Međo, B.,& Sedmak, A.. (2011). Weld metal tensile strength determined by testing flat micro tensile and round tensile specimens. in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011
Scientific Society for Mechanical Engineering., 71-72.
https://hdl.handle.net/21.15107/rcub_technorep_1741

Gubeljak N, Rakin M, Predan J, Međo B, Sedmak A. Weld metal tensile strength determined by testing flat micro tensile and round tensile specimens. in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011. 2011;:71-72.
https://hdl.handle.net/21.15107/rcub_technorep_1741 .

Gubeljak, Nenad, Rakin, Marko, Predan, J., Međo, Bojan, Sedmak, Aleksandar, "Weld metal tensile strength determined by testing flat micro tensile and round tensile specimens" in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011 (2011):71-72,
https://hdl.handle.net/21.15107/rcub_technorep_1741 .

TY  - CONF
AU  - Međo, Bojan
AU  - Rakin, Marko
AU  - Gubeljak, Nenad
AU  - Predan, J.
AU  - Arsić, M.
AU  - Sedmak, Aleksandar
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1181
AB  - Among various micromechanical models for ductile fracture analysis using local approach, those based on the Gurson plastic flow criterion have been intensively developed in the past three decades. However, their application is still subject of many researches, with the aim to improve the assessment of ductile fracture in various, mainly metallic, materials. In this work, Gurson criterion is applied to welded joints produced with one or two different weld metals (one of these is overmatched, while the other is undermatched). Welded single-edge notched bend (SENB) specimens are examined, with an initial pre-crack located in the symmetry plane of each joint. Local approach is chosen for assessment of behaviour of the joints under the external loading, to capture the effect of material inhomogeneity and initial crack length on deformation and ductile fracture initiation in analysed specimens.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
C3  - Materials Structure & Micromechanics of Fracture
T1  - Influence of crack length on ductile fracture initiation in welded joints with one and two weld metals
EP  - +
SP  - 578
VL  - 465
DO  - 10.4028/www.scientific.net/KEM.465.578
ER  - 

@conference{
author = "Međo, Bojan and Rakin, Marko and Gubeljak, Nenad and Predan, J. and Arsić, M. and Sedmak, Aleksandar",
year = "2011",
abstract = "Among various micromechanical models for ductile fracture analysis using local approach, those based on the Gurson plastic flow criterion have been intensively developed in the past three decades. However, their application is still subject of many researches, with the aim to improve the assessment of ductile fracture in various, mainly metallic, materials. In this work, Gurson criterion is applied to welded joints produced with one or two different weld metals (one of these is overmatched, while the other is undermatched). Welded single-edge notched bend (SENB) specimens are examined, with an initial pre-crack located in the symmetry plane of each joint. Local approach is chosen for assessment of behaviour of the joints under the external loading, to capture the effect of material inhomogeneity and initial crack length on deformation and ductile fracture initiation in analysed specimens.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Materials Structure & Micromechanics of Fracture",
title = "Influence of crack length on ductile fracture initiation in welded joints with one and two weld metals",
pages = "+-578",
volume = "465",
doi = "10.4028/www.scientific.net/KEM.465.578"
}

Međo, B., Rakin, M., Gubeljak, N., Predan, J., Arsić, M.,& Sedmak, A.. (2011). Influence of crack length on ductile fracture initiation in welded joints with one and two weld metals. in Materials Structure & Micromechanics of Fracture
Trans Tech Publications Ltd, Durnten-Zurich., 465, 578-+.
https://doi.org/10.4028/www.scientific.net/KEM.465.578

Međo B, Rakin M, Gubeljak N, Predan J, Arsić M, Sedmak A. Influence of crack length on ductile fracture initiation in welded joints with one and two weld metals. in Materials Structure & Micromechanics of Fracture. 2011;465:578-+.
doi:10.4028/www.scientific.net/KEM.465.578 .

Međo, Bojan, Rakin, Marko, Gubeljak, Nenad, Predan, J., Arsić, M., Sedmak, Aleksandar, "Influence of crack length on ductile fracture initiation in welded joints with one and two weld metals" in Materials Structure & Micromechanics of Fracture, 465 (2011):578-+,
https://doi.org/10.4028/www.scientific.net/KEM.465.578 . .