TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš S.
AU  - Radović, Nenad
AU  - Bonyar, Attila
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3418
AB  - In order to accurately and reliably evaluate the cavitation erosion resistance of materials using a cavitating jet generator, the effects of the hydrodynamic parameters and the nozzle geometry on the erosion process were investigated. Since the behaviour of a high speed submerged cavitating jet is also depending on the working conditions; their influence is also discussed based on the evaluation of cavitation erosion process. The erosion rate was used as an indicator for cavitating jet behaviour. Specimens of commercial purity copper were subjected to high speed submerged cavitating jets under different initial conditions, for certain time periods. The force generated by jet cavitation is employed to initiate the erosion in surface. The tested specimens were investigated with a digital optical microscope and a profilometer. It was found that erosion becomes more pronounced with decreasing cavitation numbers, as well as with increasing exit jet velocities. The nozzle configuration and hydrodynamic parameters have strong influences on the erosion rate, eroded area and depth of erosion. A comparison between the obtained results explains some of the mechanisms involved in cavitation and erosion processes and their relation to the tested parameters. Mathematical expressions which combine these parameters with the erosion rate are obtained. These parameters are very important in order to control the cavitation as a phenomenon and also to control the performance of the cavitating jet generator.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - International Journal of Multiphase Flow
T1  - The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process
EP  - 38
SP  - 27
VL  - 83
DO  - 10.1016/j.ijmultiphaseflow.2016.03.005
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš S. and Radović, Nenad and Bonyar, Attila",
year = "2016",
abstract = "In order to accurately and reliably evaluate the cavitation erosion resistance of materials using a cavitating jet generator, the effects of the hydrodynamic parameters and the nozzle geometry on the erosion process were investigated. Since the behaviour of a high speed submerged cavitating jet is also depending on the working conditions; their influence is also discussed based on the evaluation of cavitation erosion process. The erosion rate was used as an indicator for cavitating jet behaviour. Specimens of commercial purity copper were subjected to high speed submerged cavitating jets under different initial conditions, for certain time periods. The force generated by jet cavitation is employed to initiate the erosion in surface. The tested specimens were investigated with a digital optical microscope and a profilometer. It was found that erosion becomes more pronounced with decreasing cavitation numbers, as well as with increasing exit jet velocities. The nozzle configuration and hydrodynamic parameters have strong influences on the erosion rate, eroded area and depth of erosion. A comparison between the obtained results explains some of the mechanisms involved in cavitation and erosion processes and their relation to the tested parameters. Mathematical expressions which combine these parameters with the erosion rate are obtained. These parameters are very important in order to control the cavitation as a phenomenon and also to control the performance of the cavitating jet generator.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Multiphase Flow",
title = "The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process",
pages = "38-27",
volume = "83",
doi = "10.1016/j.ijmultiphaseflow.2016.03.005"
}

Hutli, E., Nedeljković, M. S., Radović, N.,& Bonyar, A.. (2016). The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process. in International Journal of Multiphase Flow
Pergamon-Elsevier Science Ltd, Oxford., 83, 27-38.
https://doi.org/10.1016/j.ijmultiphaseflow.2016.03.005

Hutli E, Nedeljković MS, Radović N, Bonyar A. The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process. in International Journal of Multiphase Flow. 2016;83:27-38.
doi:10.1016/j.ijmultiphaseflow.2016.03.005 .

Hutli, Ezddin, Nedeljković, Miloš S., Radović, Nenad, Bonyar, Attila, "The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process" in International Journal of Multiphase Flow, 83 (2016):27-38,
https://doi.org/10.1016/j.ijmultiphaseflow.2016.03.005 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš S.
AU  - Bonyar, Attila
AU  - Radović, Nenad
AU  - Llić, Vojislav
AU  - Debeljković, Aleksandra
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3431
AB  - The aim of this paper is to investigate the possible application of the cavitation phenomenon as efficient method to modify the surface properties (e.g. the surface roughness) in the nano- and micro-levels. Aluminum alloy (AlSiMg) specimens were subjected to high speed submerged cavitating jets under various working conditions, for short time periods between 15 and 30 s. The force generated by the cavitating jet is employed to modify the surface roughness of the specimen. The target surface was analyzed with optical microscopy, white light interferometry, atomic force microscopy (AFM) and also with electrostatic force microscopy (EFM). The results show the possibility to use the cavitation bubbles as a nanofabrication method e.g. for shotless surface peening. With AFM, the deformation mechanism and the formation of planar or wavy slip were also investigated. EFM shows that the changes in the surface roughness also have a strong influence on, the electrostatic field above a biased sample.
PB  - Elsevier Sci Ltd, Oxford
T2  - Tribology International
T1  - The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level
EP  - 97
SP  - 88
VL  - 101
DO  - 10.1016/j.triboint.2016.04.006
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš S. and Bonyar, Attila and Radović, Nenad and Llić, Vojislav and Debeljković, Aleksandra",
year = "2016",
abstract = "The aim of this paper is to investigate the possible application of the cavitation phenomenon as efficient method to modify the surface properties (e.g. the surface roughness) in the nano- and micro-levels. Aluminum alloy (AlSiMg) specimens were subjected to high speed submerged cavitating jets under various working conditions, for short time periods between 15 and 30 s. The force generated by the cavitating jet is employed to modify the surface roughness of the specimen. The target surface was analyzed with optical microscopy, white light interferometry, atomic force microscopy (AFM) and also with electrostatic force microscopy (EFM). The results show the possibility to use the cavitation bubbles as a nanofabrication method e.g. for shotless surface peening. With AFM, the deformation mechanism and the formation of planar or wavy slip were also investigated. EFM shows that the changes in the surface roughness also have a strong influence on, the electrostatic field above a biased sample.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Tribology International",
title = "The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level",
pages = "97-88",
volume = "101",
doi = "10.1016/j.triboint.2016.04.006"
}

Hutli, E., Nedeljković, M. S., Bonyar, A., Radović, N., Llić, V.,& Debeljković, A.. (2016). The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level. in Tribology International
Elsevier Sci Ltd, Oxford., 101, 88-97.
https://doi.org/10.1016/j.triboint.2016.04.006

Hutli E, Nedeljković MS, Bonyar A, Radović N, Llić V, Debeljković A. The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level. in Tribology International. 2016;101:88-97.
doi:10.1016/j.triboint.2016.04.006 .

Hutli, Ezddin, Nedeljković, Miloš S., Bonyar, Attila, Radović, Nenad, Llić, Vojislav, Debeljković, Aleksandra, "The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level" in Tribology International, 101 (2016):88-97,
https://doi.org/10.1016/j.triboint.2016.04.006 . .

TY  - JOUR
AU  - Hutli, Ezddin Ali Farag
AU  - Nedeljković, Miloš S.
AU  - Radović, Nenad
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2407
AB  - The aim of this paper is to establish a possible application of the cavitation phenomenon as an efficient method to modify surface properties at the nano and micro levels. Commercial-purity copper was subjected to high submerged cavitating jets under different initial conditions, for time periods between 15 and 1,800 s. The force generated by jet cavitation is employed to modify the surface roughness in the order of nano and micro scales. The target surface was analyzed with optical as well as scanning probe electron microscopy. The results showed the possibility to use cavitation bubbles to establish a nanofabrication method for the surface preparation, shoot-less surface peening (nano/micro level). Also, the cavitation is assumed to be one of the miniaturized testing methods that have to be developed to reliably measure mechanical properties in small dimensions and to identify the behavior caused by the size dependence. With optical, SEM, and atomic force microscopy observation techniques in this study, the deformation mechanism and the formation of planar or wavy slip were also studied. The results indicate that even at short exposure times, observed roughness having a characteristic "serpentine" configuration can be related to the start of the plastic deformation of the specimen surface. Longer exposure times inevitably result in a greater number of jetspecimen interactions leading to specimen fracture.
PB  - Springer, New York
T2  - Plasmonics
T1  - Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet
EP  - 849
IS  - 2
SP  - 843
VL  - 8
DO  - 10.1007/s11468-013-9481-6
ER  - 

@article{
author = "Hutli, Ezddin Ali Farag and Nedeljković, Miloš S. and Radović, Nenad",
year = "2013",
abstract = "The aim of this paper is to establish a possible application of the cavitation phenomenon as an efficient method to modify surface properties at the nano and micro levels. Commercial-purity copper was subjected to high submerged cavitating jets under different initial conditions, for time periods between 15 and 1,800 s. The force generated by jet cavitation is employed to modify the surface roughness in the order of nano and micro scales. The target surface was analyzed with optical as well as scanning probe electron microscopy. The results showed the possibility to use cavitation bubbles to establish a nanofabrication method for the surface preparation, shoot-less surface peening (nano/micro level). Also, the cavitation is assumed to be one of the miniaturized testing methods that have to be developed to reliably measure mechanical properties in small dimensions and to identify the behavior caused by the size dependence. With optical, SEM, and atomic force microscopy observation techniques in this study, the deformation mechanism and the formation of planar or wavy slip were also studied. The results indicate that even at short exposure times, observed roughness having a characteristic "serpentine" configuration can be related to the start of the plastic deformation of the specimen surface. Longer exposure times inevitably result in a greater number of jetspecimen interactions leading to specimen fracture.",
publisher = "Springer, New York",
journal = "Plasmonics",
title = "Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet",
pages = "849-843",
number = "2",
volume = "8",
doi = "10.1007/s11468-013-9481-6"
}

Hutli, E. A. F., Nedeljković, M. S.,& Radović, N.. (2013). Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet. in Plasmonics
Springer, New York., 8(2), 843-849.
https://doi.org/10.1007/s11468-013-9481-6

Hutli EAF, Nedeljković MS, Radović N. Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet. in Plasmonics. 2013;8(2):843-849.
doi:10.1007/s11468-013-9481-6 .

Hutli, Ezddin Ali Farag, Nedeljković, Miloš S., Radović, Nenad, "Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet" in Plasmonics, 8, no. 2 (2013):843-849,
https://doi.org/10.1007/s11468-013-9481-6 . .

TY  - JOUR
AU  - Hutli, Ezddin Ali Farag
AU  - Nedeljković, Miloš S.
AU  - Radović, Nenad
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1311
AB  - Experimental setup with a submerged cavitating jet has been used for the study of influences of material, exposure time and working fluid temperature on the erosion process. Each of the parameters has been varied separately, and the results of erosion are analyzed in detail. Additionally, comparison of experiments with nitrated and non-nitrated material has been made in order to study the enhancement (mostly reflected as the prolonged incubation time) of erosion resistance achieved by nitrating the specimen surface.
PB  - Springer, New York
T2  - Archive of Applied Mechanics
T1  - Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion
EP  - 341
IS  - 5
SP  - 329
VL  - 78
DO  - 10.1007/s00419-007-0163-8
ER  - 

@article{
author = "Hutli, Ezddin Ali Farag and Nedeljković, Miloš S. and Radović, Nenad",
year = "2008",
abstract = "Experimental setup with a submerged cavitating jet has been used for the study of influences of material, exposure time and working fluid temperature on the erosion process. Each of the parameters has been varied separately, and the results of erosion are analyzed in detail. Additionally, comparison of experiments with nitrated and non-nitrated material has been made in order to study the enhancement (mostly reflected as the prolonged incubation time) of erosion resistance achieved by nitrating the specimen surface.",
publisher = "Springer, New York",
journal = "Archive of Applied Mechanics",
title = "Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion",
pages = "341-329",
number = "5",
volume = "78",
doi = "10.1007/s00419-007-0163-8"
}

Hutli, E. A. F., Nedeljković, M. S.,& Radović, N.. (2008). Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion. in Archive of Applied Mechanics
Springer, New York., 78(5), 329-341.
https://doi.org/10.1007/s00419-007-0163-8

Hutli EAF, Nedeljković MS, Radović N. Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion. in Archive of Applied Mechanics. 2008;78(5):329-341.
doi:10.1007/s00419-007-0163-8 .

Hutli, Ezddin Ali Farag, Nedeljković, Miloš S., Radović, Nenad, "Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion" in Archive of Applied Mechanics, 78, no. 5 (2008):329-341,
https://doi.org/10.1007/s00419-007-0163-8 . .