Autor: Chwastek, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Damping Properties and Density of Helmet Liners Made of Expanded Polystyrene (EPS)
Autorzy:: Trzaskalska, M.
Chwastek, R.
Powiązania:: https://bibliotekanauki.pl/articles/2049565.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: expanded PS
ski liners
PS foams
damping factor
bulk density
Opis:: The purpose of the work was to determine the infuence of the bulk density ρz of granules, processing parameters and the density of ski inserts ρw made of expanded polystyrene (EPS) on their damping properties. For this aim liners for ski helmets with 3 different bulk densities were made. Sintering time and sintering pressure were also changed. The percentage damping factor η was determined on the basis of the results obtained in the rebound resilience test. Based on the analysis of the obtained data, it was found that increasing the density of EPS pads ρw increases their damping properties and at the same time contributes to a decrease in elasticity, increase in hardness and brittleness of EPS products.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 1; 339-344
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: A Comparison of Different Estimation Methods for Hysteresis Modelling
Autorzy:: Jastrzębski, R.
Chwastek, K.
Biondić, I.
Miličević, K.
Powiązania:: https://bibliotekanauki.pl/articles/1030241.pdf
Data publikacji:: 2017-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.60.-d
75.60.Ej
Opis:: The paper focuses on the estimation techniques for a low-dimensional phenomenological model of ferromagnetic hysteresis proposed by the Brazilian research group GRUCAD. The description is expressed with an ordinary differential equation and some auxiliary relationships. It describes both irreversible and reversible magnetization processes and addresses some problems inherent in the well-known Jiles-Atherton model. It is found that the differential evolution method is the most competitive technique for recovery of optimal model parameters.
Źródło:: Acta Physica Polonica A; 2017, 131, 5; 1228-1231
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: The Effect of Residual Stresses on the Coercive Field Strength of Drawn Wires
Autorzy:: Suliga, M.
Kruzel, R.
Chwastek, K.
Jakubas, A.
Pawlik, P.
Powiązania:: https://bibliotekanauki.pl/articles/1030254.pdf
Data publikacji:: 2017-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.72.Hh
75.60.-d
75.60.Ej
Opis:: Residual stresses occurring in drawn wires due to technological process affect their quality, which in turn may have a substantial impact on safety of use and "life" of ready-made products. Measurements of magnetic properties of the wires like coercive field strength may be useful for monitoring the level of residual stresses. The present paper examines the relationship between the drawing speed and the coercive field strength in high carbon wires. It has been found that for drawing speeds not exceeding 20 m/s the coercive field strength is proportional to residual stresses on wire surface.
Źródło:: Acta Physica Polonica A; 2017, 131, 4; 1114-1116
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Scaling of anhysteretic curves for LaFeCoSi alloy near the transition point
Autorzy:: Gozdur, R.
Chwastek, K.
Najgebauer, M.
Lebioda, M.
Bernacki, Ł.
Wodzyński, A.
Powiązania:: https://bibliotekanauki.pl/articles/1053125.pdf
Data publikacji:: 2017-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.30.Sg
75.60.-d
75.60.Ej
Opis:: LaFeCoSi alloys have attracted much attention as they exhibit magnetocaloric effect in near room temperature. The paper focuses on the description of anhysteretic curve for LaFeCoSi alloy for temperatures close to transition point. For this purpose the Langevin function is applied. The paper confirms that the Langevin function might be a good starting point for development of analytical models aimed at examination of magnetic properties in La-based magnetocaloric materials.
Źródło:: Acta Physica Polonica A; 2017, 131, 4; 801-803
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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