Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Piotr Koniorczyk"'
Publikováno v:
Problemy Mechatroniki, Vol 14, Iss 2, Pp 73-86 (2023)
The paper presents the results of computer simulations of the transient heat flow in the barrel wall of a 35 mm caliber cannon for a single shot and a sequence of seven shots for a selected 30HN2MFA barrel steel. It was assumed that the inner surface
Externí odkaz:
https://doaj.org/article/2702ede38e4f48c197a088aaee99f3be
Publikováno v:
Energies, Vol 17, Iss 3, p 702 (2024)
This paper presents the results of numerical simulations of heat transfer in a tube with a protective chromium layer on the inner surface made of steel, with different shrinkage temperatures. Shrinkage in the steel is an unfavorable phenomenon becaus
Externí odkaz:
https://doaj.org/article/680e82f239344e28987e4718d09e5c02
Publikováno v:
Energies, Vol 16, Iss 16, p 6068 (2023)
Commercially available paraffin wax LTP ST, manufactured in Poland by POLWAX, was used as a phase change material (PCM) for passive cooling of an LED panel containing 28 high power light emitting diodes (LEDs). Paraffin wax LTP ST of density ρ = 930
Externí odkaz:
https://doaj.org/article/ee10cbb64535496eaf101f68be843476
Publikováno v:
Biuletyn Wojskowej Akademii Technicznej, Vol 70, Iss 1, Pp 15-30 (2021)
Abstract. The paper presents numerical simulations of transient heat conduction in the uncooled nozzle of a short-range anti-aircraft rocket engine. The calculations were made for the configuration of the nozzle with an insert in the critical section
Externí odkaz:
https://doaj.org/article/cc811c6fb0254a9db09d93e260507a13
Publikováno v:
Applied Sciences, Vol 13, Iss 9, p 5523 (2023)
This paper presents the results of numerical calculations of heat transfer in the steel wall of a tube with different chromium layer thicknesses on the inner surface for a single and a sequence of heat impulses. In modeling the thermal phenomenon, th
Externí odkaz:
https://doaj.org/article/29cd531b7502488798b3bab59e6712ea
Publikováno v:
Materials, Vol 16, Iss 3, p 1206 (2023)
Measurements of thermal diffusivity, heat capacity and thermal expansion of X37CrMoV5-1 (1.2343) hot-work tool steel and Maraging 350 (1.6355) steel in the temperature range from −50 °C to 1000 °C were carried out in this paper. Both X37CrMoV5-1
Externí odkaz:
https://doaj.org/article/f9d5051322484601927e0fb994781604
Publikováno v:
Problemy Mechatroniki, Vol 10, Iss 2, Pp 43-54 (2019)
The paper presents results of thermal decomposition analysis of selected solid rocket propellants. Homogeneous propellant PAC and heterogeneous propellant H2 were subjected to simultaneous thermal analysis with the use of NETZSCH STA 2500 Regulus dev
Externí odkaz:
https://doaj.org/article/a4b77e0179c742ccae4720ff745add44
Publikováno v:
Energies, Vol 15, Iss 5, p 1868 (2022)
The results of numerical simulations of transient heat transfer in the barrel wall of a 35 mm caliber cannon for a single shot and the sequences of seven shots and sixty shots for chosen barrel steels are presented. It was assumed that the cannon bar
Externí odkaz:
https://doaj.org/article/25c6165d88d545b18091e297b9e02961
Autor:
Zbigniew LECIEJEWSKI, Piotr KONIORCZYK, Andrzej DĘBSKI, Marek PREISKORN, Zbigniew SURMA, Janusz ZMYWACZYK
Publikováno v:
Problemy Mechatroniki, Vol 9, Iss 3, Pp 57-74 (2018)
This paper presents the results of numerical simulations of non-stationary heat transfer in a 35 mm anti-air gun barrel cover made of composite materials. The cover protects the gun against weather conditions, including sea water effects, and serves
Externí odkaz:
https://doaj.org/article/591f5519d09841c8a1db3cf15d6a4b82
Autor:
Piotr Koniorczyk, Judyta Sienkiewicz, Janusz Zmywaczyk, Andrzej Dębski, Mateusz Zieliński, Marek Preiskorn
Publikováno v:
Materials, Vol 14, Iss 20, p 6043 (2021)
The purpose of this study is to investigate the effect of heat treatments and resulting changes in microstructure on the thermophysical properties of commercial 1.4462 duplex stainless steel. Three types of heat treatment and a raw sample were used.
Externí odkaz:
https://doaj.org/article/08421d7fa3234207abff7cc977a93dd0