Zobrazeno 1 - 10
of 31
pro vyhledávání: '"J. Ranachowski"'
Publikováno v:
Polymer. 22:1677-1682
We have investigated certain physical and mechanical properties of polypropylene that had been crosslinked with various amounts of quinone in the presence of a fixed amount of 1,4-ditertbutyloperoxy diisopropyl benzene. To achieve this we have used s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::744ff0c7351a8880fe28ca1d2e807e59
https://doi.org/10.1016/0032-3861(81)90385-2
https://doi.org/10.1016/0032-3861(81)90385-2
Publikováno v:
Acta Polymerica. 36:147-150
The ultrasonic attenuation of PVCz in 1,2-dichloroethane solution was investigated as a function of temperature and frequency. The relaxation observed is assigned to segmental motions of the chain. The activation enthalpy of this process and the enth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dddd89df086545c2c533b0ff536b510
https://doi.org/10.1002/actp.1985.010360306
https://doi.org/10.1002/actp.1985.010360306
Publikováno v:
Ceramurgia International. 3:165-168
The interface of metal-to-alumina ceramic seals was examined by an electron probe and by X-ray methods. The thickness of the interface was found to be 11 to 15 μm. About 75 w o of the interface was amorphous glassy phase and the remaining 25 w o was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b7d93e4c68fff79ad235d957b0f704d
https://doi.org/10.1016/0390-5519(77)90064-3
https://doi.org/10.1016/0390-5519(77)90064-3
Autor:
J. Ranachowski
Publikováno v:
Ultrasonics. 13:203-207
Theoretical problems concerning the propagation of ultrasonic waves in a porous medium are outlined. The propagation velocity of longitudinal ultrasonic waves in an elastic medium with spherical gaseous inclusions is considered in detail. The calcula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1024d913e0e324b7388e1233fa010e8d
https://doi.org/10.1016/0041-624x(75)90031-1
https://doi.org/10.1016/0041-624x(75)90031-1
Publikováno v:
Ultrasonics. 15:70-74
Formulae describing the effective elastic moduli of a porous ceramic medium are derived using Eshelby's solution and Maxwell's approximation. The ceramic medium is considered as an infinite matrix, which has uniform elastic properties and encloses no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ff07bde73aa981ff61974777e7fbe08
https://doi.org/10.1016/0041-624x(77)90068-3
https://doi.org/10.1016/0041-624x(77)90068-3
Autor:
B. Mazurek, J. Ranachowski
Publikováno v:
1984 IEEE International Conference on Electrical Insulation.
The results presented confirm the effect known from other works e.g. 4, that the electric strength of solid insulation decreases with the increase of its linear dimensions /size effect/. The application of a point electrode forced a breakdown to occu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4581b4d0899883f26587b94afc3432f2
https://doi.org/10.1109/eic.1984.7465147
https://doi.org/10.1109/eic.1984.7465147
The method of investigation of the subcritical crack growth in brittle ceramic materials with the recording of acoustic emission /AE/ signals is reported. Samples were examined using double torsion method at constant strain rate. The AE signals recor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d1d13167b4289a52216ba497090c2b3
https://doi.org/10.1016/b978-0-408-02348-1.50128-1
https://doi.org/10.1016/b978-0-408-02348-1.50128-1
Autor:
T. Las, J. Ranachowski
Publikováno v:
1984 IEEE International Conference on Electrical Insulation.
Modern methods developed for the evaluation of ceramic components for electrical applications will be described. These methods include the nondestructive testing and evaluation of both electrical and mechanical properties.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc78887e479e15f59e4d4ec49e3ac136
https://doi.org/10.1109/eic.1984.7465155
https://doi.org/10.1109/eic.1984.7465155
Publikováno v:
Polymer Bulletin.
Chemically crosslinked polyethylene and polypropylene were investigated by the means of NMR. Basing on this investigation the comparison of MR relaxation times and structure of both polymers are made as a function of the concentration of the crosslin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b986e350303747ed03d745cfe7b4c4ff
https://doi.org/10.1007/bf00283820
https://doi.org/10.1007/bf00283820
Autor:
J. Ranachowski, W. Wlosinski
Publikováno v:
Ceramics International. 11:132
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::391b09d24e4fb3434628163347abfbf1
https://doi.org/10.1016/0272-8842(85)90094-x
https://doi.org/10.1016/0272-8842(85)90094-x