TY  - JOUR
AU  - Musraty, Walid
AU  - Međo, Bojan
AU  - Gubeljak, Nenad
AU  - Stefane, Primoz
AU  - Radosavljević, Zoran
AU  - Burzić, Zijah
AU  - Rakin, Marko
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4027
AB  - Pipelines are commonly used in process industry for transport of fluids, as well as granular solids, due to their numerous advantages in comparison to other transportation means. Pipe integrity is essential for a reliable work of the entire plant, as well as for safety assurance. Also, serious ecological consequences may follow the pipeline failure in some cases, i.e. due to the leak of toxic, flammable or otherwise dangerous fluids in a chemical or some other plant. Therefore, it is very important to examine the fracture behaviour of pipelines, which is done here by testing the recently proposed ring-shaped specimens exposed to bending. The specimens were fabricated from a seam pipe for pressure applications (allowed for usage on temperatures up to 300 degrees C). Initial defects, very narrow notches, were machined either in the base metal and weld metal (seam) or in the base metal only. Regardless of the defect position, ductile fracture mechanism is observed in all specimens. The results show that the ring-shaped specimen can be successfully used for fracture characterisation of pipeline material, especially for thin-walled pipes which are not suitable for production of standard fracture mechanics specimens due to the insufficient wall thickness.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Seam pipes for process industry - Fracture analysis by using ring-shaped specimens
EP  - 46
IS  - 1
SP  - 39
VL  - 72
DO  - 10.2298/HEMIND170530014M
ER  - 

@article{
author = "Musraty, Walid and Međo, Bojan and Gubeljak, Nenad and Stefane, Primoz and Radosavljević, Zoran and Burzić, Zijah and Rakin, Marko",
year = "2018",
abstract = "Pipelines are commonly used in process industry for transport of fluids, as well as granular solids, due to their numerous advantages in comparison to other transportation means. Pipe integrity is essential for a reliable work of the entire plant, as well as for safety assurance. Also, serious ecological consequences may follow the pipeline failure in some cases, i.e. due to the leak of toxic, flammable or otherwise dangerous fluids in a chemical or some other plant. Therefore, it is very important to examine the fracture behaviour of pipelines, which is done here by testing the recently proposed ring-shaped specimens exposed to bending. The specimens were fabricated from a seam pipe for pressure applications (allowed for usage on temperatures up to 300 degrees C). Initial defects, very narrow notches, were machined either in the base metal and weld metal (seam) or in the base metal only. Regardless of the defect position, ductile fracture mechanism is observed in all specimens. The results show that the ring-shaped specimen can be successfully used for fracture characterisation of pipeline material, especially for thin-walled pipes which are not suitable for production of standard fracture mechanics specimens due to the insufficient wall thickness.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Seam pipes for process industry - Fracture analysis by using ring-shaped specimens",
pages = "46-39",
number = "1",
volume = "72",
doi = "10.2298/HEMIND170530014M"
}

Musraty, W., Međo, B., Gubeljak, N., Stefane, P., Radosavljević, Z., Burzić, Z.,& Rakin, M.. (2018). Seam pipes for process industry - Fracture analysis by using ring-shaped specimens. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 72(1), 39-46.
https://doi.org/10.2298/HEMIND170530014M

Musraty W, Međo B, Gubeljak N, Stefane P, Radosavljević Z, Burzić Z, Rakin M. Seam pipes for process industry - Fracture analysis by using ring-shaped specimens. in Hemijska industrija. 2018;72(1):39-46.
doi:10.2298/HEMIND170530014M .

Musraty, Walid, Međo, Bojan, Gubeljak, Nenad, Stefane, Primoz, Radosavljević, Zoran, Burzić, Zijah, Rakin, Marko, "Seam pipes for process industry - Fracture analysis by using ring-shaped specimens" in Hemijska industrija, 72, no. 1 (2018):39-46,
https://doi.org/10.2298/HEMIND170530014M . .

TY  - CONF
AU  - Međo, Bojan
AU  - Rakin, Marko
AU  - Gubeljak, Nenad
AU  - Musraty, Walid
AU  - Likeb, Andrej
AU  - Cvijović-Alagić, Ivana
AU  - Sedmak, Aleksandar
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6297
PB  - SRPSKO društvo za mehaniku
C3  - 6th International Congress of Serbian Society of Mechanics
T1  - Fracture mechanics analysis of heterogeneous cylindrical structures using pipe-ring notched bend specimens
SP  - 132
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6297
ER  - 

@conference{
author = "Međo, Bojan and Rakin, Marko and Gubeljak, Nenad and Musraty, Walid and Likeb, Andrej and Cvijović-Alagić, Ivana and Sedmak, Aleksandar",
year = "2017",
publisher = "SRPSKO društvo za mehaniku",
journal = "6th International Congress of Serbian Society of Mechanics",
title = "Fracture mechanics analysis of heterogeneous cylindrical structures using pipe-ring notched bend specimens",
pages = "132",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6297"
}

Međo, B., Rakin, M., Gubeljak, N., Musraty, W., Likeb, A., Cvijović-Alagić, I.,& Sedmak, A.. (2017). Fracture mechanics analysis of heterogeneous cylindrical structures using pipe-ring notched bend specimens. in 6th International Congress of Serbian Society of Mechanics
SRPSKO društvo za mehaniku., 132.
https://hdl.handle.net/21.15107/rcub_technorep_6297

Međo B, Rakin M, Gubeljak N, Musraty W, Likeb A, Cvijović-Alagić I, Sedmak A. Fracture mechanics analysis of heterogeneous cylindrical structures using pipe-ring notched bend specimens. in 6th International Congress of Serbian Society of Mechanics. 2017;:132.
https://hdl.handle.net/21.15107/rcub_technorep_6297 .

Međo, Bojan, Rakin, Marko, Gubeljak, Nenad, Musraty, Walid, Likeb, Andrej, Cvijović-Alagić, Ivana, Sedmak, Aleksandar, "Fracture mechanics analysis of heterogeneous cylindrical structures using pipe-ring notched bend specimens" in 6th International Congress of Serbian Society of Mechanics (2017):132,
https://hdl.handle.net/21.15107/rcub_technorep_6297 .

TY  - JOUR
AU  - Musraty, Walid
AU  - Međo, Bojan
AU  - Gubeljak, Nenad
AU  - Likeb, A.
AU  - Cvijović-Alagić, Ivana
AU  - Sedmak, Aleksandar
AU  - Rakin, Marko
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3734
AB  - Integrity of pipes is typically assessed by testing fracture mechanics specimens, such as compact tensile (CT) or single-edge notched bending (SENB). However, for some pipe dimensions it is not easy or possible to fabricate a specimen conforming to the requirements of standard procedures. A new type of specimen is proposed recently, which can be advantageous for relatively small pipe diameters and axial defects - the pipe ring notch bend specimen - PRNB. In this work, criteria for failure by ductile fracture of PRNB specimens are determined experimentally and by application of micromechanical analysis. The influence of size of the specimen, as well as size and shape of the stress concentrator, is analysed. The results of this study, along with previous authors' results, lead to the conclusion that the pipe ring specimens can be applied in integrity assessment of pipes with defects. Also, the benefits of their application include much simpler fabrication and the same material history as the pipe itself.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Fracture Mechanics
T1  - Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis
EP  - 261
SP  - 247
VL  - 175
DO  - 10.1016/j.engfracmech.2017.01.022
ER  - 

@article{
author = "Musraty, Walid and Međo, Bojan and Gubeljak, Nenad and Likeb, A. and Cvijović-Alagić, Ivana and Sedmak, Aleksandar and Rakin, Marko",
year = "2017",
abstract = "Integrity of pipes is typically assessed by testing fracture mechanics specimens, such as compact tensile (CT) or single-edge notched bending (SENB). However, for some pipe dimensions it is not easy or possible to fabricate a specimen conforming to the requirements of standard procedures. A new type of specimen is proposed recently, which can be advantageous for relatively small pipe diameters and axial defects - the pipe ring notch bend specimen - PRNB. In this work, criteria for failure by ductile fracture of PRNB specimens are determined experimentally and by application of micromechanical analysis. The influence of size of the specimen, as well as size and shape of the stress concentrator, is analysed. The results of this study, along with previous authors' results, lead to the conclusion that the pipe ring specimens can be applied in integrity assessment of pipes with defects. Also, the benefits of their application include much simpler fabrication and the same material history as the pipe itself.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Fracture Mechanics",
title = "Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis",
pages = "261-247",
volume = "175",
doi = "10.1016/j.engfracmech.2017.01.022"
}

Musraty, W., Međo, B., Gubeljak, N., Likeb, A., Cvijović-Alagić, I., Sedmak, A.,& Rakin, M.. (2017). Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis. in Engineering Fracture Mechanics
Pergamon-Elsevier Science Ltd, Oxford., 175, 247-261.
https://doi.org/10.1016/j.engfracmech.2017.01.022

Musraty W, Međo B, Gubeljak N, Likeb A, Cvijović-Alagić I, Sedmak A, Rakin M. Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis. in Engineering Fracture Mechanics. 2017;175:247-261.
doi:10.1016/j.engfracmech.2017.01.022 .

Musraty, Walid, Međo, Bojan, Gubeljak, Nenad, Likeb, A., Cvijović-Alagić, Ivana, Sedmak, Aleksandar, Rakin, Marko, "Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis" in Engineering Fracture Mechanics, 175 (2017):247-261,
https://doi.org/10.1016/j.engfracmech.2017.01.022 . .

TY  - CONF
AU  - Međo, Bojan
AU  - Rakin, Marko
AU  - Gubeljak, Nenad
AU  - Musraty, Walid
AU  - Matvienko, Y.
AU  - Milošević, M.
AU  - Sedmak, Aleksandar
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3483
AB  - Integrity of cylindrical structures, such as pipes and small-scale pressure vessels, is typically assessed by testing fracture mechanics specimens, like compact tensile CT or single-edge notched bending, SENB. However, their fabrication is mainly not possible for thin-walled pressurised elements, commonly used in structures of process and energetic facilities, such as hydrogen and hydrogen carriers storage and delivery systems. Recently proposed nonstandard ring-shaped specimen is used to test the fracture resistance of pressurised cylinders with defects (cracks or notches) in the most critical direction - axial. Some of the advantages of the pipe-ring notch bend specimen, PRNB, are simple fabrication and same material history as actual exploited structure. A combined experimental-numerical procedure is applied for prediction of fracture behaviour of specimens (applicable to ductile metals, mainly steels and Al alloys), with the aim to further validate the new specimen. The results obtained so far lead to conclusion that PRNB specimen can be applied in integrity assessment of cylindrical structures.
PB  - 14th International Conference on Fracture, ICF 2017
C3  - ICF 2017 - 14th International Conference on Fracture
T1  - Numerical analysis of fracture of non-standard ring specimen for examination of axially flawed cylindrical structures
EP  - 220
SP  - 219
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3483
ER  - 

@conference{
author = "Međo, Bojan and Rakin, Marko and Gubeljak, Nenad and Musraty, Walid and Matvienko, Y. and Milošević, M. and Sedmak, Aleksandar",
year = "2017",
abstract = "Integrity of cylindrical structures, such as pipes and small-scale pressure vessels, is typically assessed by testing fracture mechanics specimens, like compact tensile CT or single-edge notched bending, SENB. However, their fabrication is mainly not possible for thin-walled pressurised elements, commonly used in structures of process and energetic facilities, such as hydrogen and hydrogen carriers storage and delivery systems. Recently proposed nonstandard ring-shaped specimen is used to test the fracture resistance of pressurised cylinders with defects (cracks or notches) in the most critical direction - axial. Some of the advantages of the pipe-ring notch bend specimen, PRNB, are simple fabrication and same material history as actual exploited structure. A combined experimental-numerical procedure is applied for prediction of fracture behaviour of specimens (applicable to ductile metals, mainly steels and Al alloys), with the aim to further validate the new specimen. The results obtained so far lead to conclusion that PRNB specimen can be applied in integrity assessment of cylindrical structures.",
publisher = "14th International Conference on Fracture, ICF 2017",
journal = "ICF 2017 - 14th International Conference on Fracture",
title = "Numerical analysis of fracture of non-standard ring specimen for examination of axially flawed cylindrical structures",
pages = "220-219",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3483"
}

Međo, B., Rakin, M., Gubeljak, N., Musraty, W., Matvienko, Y., Milošević, M.,& Sedmak, A.. (2017). Numerical analysis of fracture of non-standard ring specimen for examination of axially flawed cylindrical structures. in ICF 2017 - 14th International Conference on Fracture
14th International Conference on Fracture, ICF 2017., 2, 219-220.
https://hdl.handle.net/21.15107/rcub_technorep_3483

Međo B, Rakin M, Gubeljak N, Musraty W, Matvienko Y, Milošević M, Sedmak A. Numerical analysis of fracture of non-standard ring specimen for examination of axially flawed cylindrical structures. in ICF 2017 - 14th International Conference on Fracture. 2017;2:219-220.
https://hdl.handle.net/21.15107/rcub_technorep_3483 .

Međo, Bojan, Rakin, Marko, Gubeljak, Nenad, Musraty, Walid, Matvienko, Y., Milošević, M., Sedmak, Aleksandar, "Numerical analysis of fracture of non-standard ring specimen for examination of axially flawed cylindrical structures" in ICF 2017 - 14th International Conference on Fracture, 2 (2017):219-220,
https://hdl.handle.net/21.15107/rcub_technorep_3483 .