Zobrazeno 1 - 10
of 212
pro vyhledávání: '"Olegas Prentkovskis"'
Publikováno v:
Defence Technology, Vol 30, Iss , Pp 111-125 (2023)
The paper discusses minimizing the effect of external mechanical vibration on hydraulic valves in different military hydraulic drive systems. The current research work presents an analysis of the potential to reduce vibration on the valve casing by i
Externí odkaz:
https://doaj.org/article/372fb2f20ae34daa913cda26ef62fa8d
Autor:
Ihor Hurey, Pavlo Maruschak, Andy Augousti, Alan Flowers, Volodymyr Gurey, Volodymyr Dzyura, Olegas Prentkovskis
Publikováno v:
Lubricants, Vol 11, Iss 10, p 418 (2023)
During the TDT of 41Cr4 steel specimens, a uniformly reinforced white layer with a nano-crystalline structure is formed in the surface layers. The wear resistance of sliding friction without the lubrication of a pair of steel 41Cr4—grey cast iron E
Externí odkaz:
https://doaj.org/article/98f0f976601748719dc24d9563aecf97
Publikováno v:
Metals, Vol 13, Iss 1, p 31 (2022)
Improving the reliability of transport vehicles requires ensuring their durability while reducing metal consumption [...]
Externí odkaz:
https://doaj.org/article/ddebdcb5db0c4d3e89405a655185f55c
Autor:
Haresh Kumar Sharma, Saibal Majumder, Arindam Biswas, Olegas Prentkovskis, Samarjit Kar, Paulius Skačkauskas
Publikováno v:
Journal of Advanced Transportation, Vol 2022 (2022)
The Indian Railways Reservation System (IRRS) is one of the world’s busiest reservation systems of railway tickets. Recently, the COVID-19 pandemic situation has severely impacted the Indian Railway’s (IR) transportation, which eventually has enf
Externí odkaz:
https://doaj.org/article/fe086150972142ea8bd6dc289947ee3c
Autor:
Mykhailo Student, Volodymyr Gvozdetsky, Oleksandra Student, Olegas Prentkovskis, Pavlo Maruschak, Olena Olenyuk, Liudmyla Titova
Publikováno v:
Journal of Mechanical Engineering, Vol 69, Iss 4, Pp 133-146 (2019)
The melting conditions of the electrode wires and the structure of coatings, obtained by the electric arc spraying method depending on the pressure of the spraying air flow, are analysed in the current paper. The effect of air pressure on the sprayin
Externí odkaz:
https://doaj.org/article/5d88952321d44360b7ecc863c884a097
Publikováno v:
Machines, Vol 10, Iss 5, p 327 (2022)
The quality, wear and safety of metal structures can be controlled effectively, provided that surface defects, which occur on metal structures, are detected at the right time. Over the past 10 years, researchers have proposed a number of neural netwo
Externí odkaz:
https://doaj.org/article/e640bab6fe04455e90901ef8c09cda2a
Publikováno v:
Machines, Vol 9, Iss 12, p 366 (2021)
The correlation between the service characteristics of the working surfaces of car parts belonging to the rotary body class, and quality parameters—in particular, the height-related roughness parameter Ra—was estimated. Low values of Ra were foun
Externí odkaz:
https://doaj.org/article/f5aa4eac0daa4ca4bc0db36c174f825a
Autor:
Pavlo Maruschak, Roman Vorobel, Oleksandra Student, Iryna Ivasenko, Halyna Krechkovska, Olena Berehulyak, Teodor Mandziy, Lesia Svirska, Olegas Prentkovskis
Publikováno v:
Metals, Vol 11, Iss 11, p 1776 (2021)
The micro- and macroscopic fatigue crack growth (FCG) rates of a wide class of structural materials were analyzed and it was concluded that both rates coincide either during high-temperature tests or at high stress intensity factor (SIF) values. Thei
Externí odkaz:
https://doaj.org/article/b9d70e1a02714f5d80e4d19cd38c9d5b
Autor:
Janette Brezinová, Mária Hagarová, Dagmar Jakubéczyová, Gabriela Baranová, Olegas Prentkovskis
Publikováno v:
Metals, Vol 11, Iss 10, p 1629 (2021)
This paper deals with the evaluation of mechanical and tribological properties of Ni-Co galvanic coatings at elevated temperatures. The coatings were deposited on the copper surface, which in practice is the material of the crystallizer. Ni-Co coatin
Externí odkaz:
https://doaj.org/article/11c521c9b4564565bfb68eaddc86e6d0
Autor:
Ján Viňáš, Janette Brezinová, Henrich Sailer, Jakub Brezina, Miroslav Sahul, Pavlo Maruschak, Olegas Prentkovskis
Publikováno v:
Materials, Vol 14, Iss 8, p 2002 (2021)
The process of laser welding of sheets of HSLA (high-strength low-alloy steel), DP600 (dual-phase steel) and TRIP steels was investigated. A weld was successfully made in a double-sided hot-dip galvanized sheet with a thickness of 0.78–0.81 mm usin
Externí odkaz:
https://doaj.org/article/ca92ea39937446e992fdca46a9591386