Autor: Rećko, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical modelling of the thermo-mechanical response of a rocket motor to exhaust gases load
Autorzy:: Orłowska, M.
Panas, A. J.
Rećko, K.
Żyluk, A.
Powiązania:: https://bibliotekanauki.pl/articles/280124.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: solid propellant rocket motors
thermo-elastic FEM analysis
nozzle thermal load
Opis:: A numerical model for analysis of thermal and mechanical loads of a rocket motor has been developed. This model of a solid propellant motor corresponds to a short range, fast lunch and cruise type missile. It has been elaborated using the Finite Element Method (FEM) incorporated into commercial Comsol/M code. The experimental data on the thrust profile have been utilised to develop proper initial and boundary conditions for forgoing numerical calculations. The studies have been focused on the temperature and stress evolution within the case and nozzle section of the rocket engine. A special attention has been paid to the graphite insert of the rocket motor throat. The performed analyses proved effectiveness of the modelling methodology that will be applied to investigations of the modified motor performance.
Źródło:: Journal of Theoretical and Applied Mechanics; 2014, 52, 3; 803-814
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: On the Crystal and Magnetic Behavior οf $ScFe_{4}Al_{8}$ Single Crystal
Autorzy:: Rećko, K.
Dobrzyński, L.
Lemée-Cailleau, M.
Waliszewski, J.
Talik, E.
Suski, W.
Courtois, P.
Powiązania:: https://bibliotekanauki.pl/articles/1810469.pdf
Data publikacji:: 2009-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.05.fm
61.05.cp
Opis:: Nuclear and magnetic properties of the $ScFe_{4}Al_{8}$ single crystal were found to exhibit unparalleled complexity of nuclear and magnetic structures. Our previous neutron measurements revealed presence of two modulation vectors, both along [ε, ε, 0], however with different critical temperatures. Recent experiments forced us to revise our knowledge of the structural ordering in the sample. So far, the crystal structure of this alloy, being of $ThMn_{12}$-type, has never been questioned.
Źródło:: Acta Physica Polonica A; 2009, 115, 1; 206-208
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of Annealing in Multicomponent bcc Alloys
Autorzy:: Szymański, K.
Perzyńska, K.
Satuła, D.
Dobrzyński, L.
Zaleski, P.
Waliszewski, J.
Rećko, K.
Biernacka, M.
Olszewski, W.
Powiązania:: https://bibliotekanauki.pl/articles/1506614.pdf
Data publikacji:: 2011-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.20.Be
76.80.+y
61.05.Qr
61.50.Ks
81.30.Hd
Opis:: Multicomponent single phase alloys were synthesized according to the idea of iron-average atom system. X-ray diffraction shows formation of bcc phase and traces of unidentified phase. Mössbauer spectra indicate presence of two components with different hyperfine magnetic field distributions. The high field component corresponds to the majority ferromagnetic phase. Few per cent of iron builds low field component. The dominant effect of annealing consists in an increase of the low field component.
Źródło:: Acta Physica Polonica A; 2011, 119, 1; 62-64
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Electrical and Magnetic Properties of Selected Fe-Based High Entropy Alloys
Autorzy:: Perzyńska, K.
Go, A.
Szymański, K.
Biernacka, M.
Hawełek, Ł.
Kalska-Szostko, B.
Oleszak, D.
Rećko, K.
Waliszewski, J.
Zaleski, P.
Powiązania:: https://bibliotekanauki.pl/articles/1375573.pdf
Data publikacji:: 2014-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.23.-k
71.55.Ak
72.15.-v
72.15.Eb
75.50.Bb
82.80.Ej
Opis:: The electrical and magnetic properties of $Fe_{0.5}A_{0.5}$ alloys are presented, where the A corresponds to various compositions of the elements: A = (Al, Si, V, Cr, Co, Ga, Ni, Ge). The system is closely related to the known family of high entropy alloys. The samples were synthesized by arc melting and/or melt spinning technique and exhibit a regular type of crystal structure. Lattice parameters are systematically smaller than the estimates based on metallic radiuses of the elements. Temperature dependences of resistivities show maxima for some compositions. This behavior is consistent with results of electronic structure calculations, where a low density of states at the Fermi level were predicted. Also the measured magnetic moments are in good agreement with results of calculations. It is thus presented that some physical properties can be designed by appropriate choice of the chemical composition within the same simple structure.
Źródło:: Acta Physica Polonica A; 2014, 126, 4; 999-1004
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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