Autor: Mayer, P. M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Calculation of soil displacements due to retaining wall construction
Autorzy:: Kudella, P.
Mayer, P. M.
Powiązania:: https://bibliotekanauki.pl/articles/1954560.pdf
Data publikacji:: 2000
Wydawca:: Politechnika Gdańska
Tematy:: finite element method
soil mechanics
Opis:: With regard to serviceability state deformations, diaphragm walls and slurry walls cause considerable soil deformations during trench construction. 3-dimensional finite element analyses are able to quantify these deformations. They are compared to measurements and to the results of simplified 2-dimensional models. The dependence of soil stiffness on the actual state can be accounted for by using a hypoplastic constitutive law. Trench geometry and construction sequence are considered as factors of influence. It is shown, how the wall construction process can be modelled at the beginning of an overall 2-dimensional deformation analysis using prescribed initial deformation or stress fields.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2000, 4, 3; 453-468
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Wytrzymałość na odrywanie elementów hybrydowych metal-polimer wytwarzanych metodą wtryskiwania
The peel strength of hybrids metal-polymer hybrid elements produced by injection molding process
Autorzy:: Mayer, P.
Trzaska, O.
Dzięciołowska, M.
Powiązania:: https://bibliotekanauki.pl/articles/278469.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Inżynierii Materiałów Polimerowych i Barwników
Tematy:: kompozyt hybrydowy
złącze metal-polimer
złącze hybrydowe
żywica epoksydowa
adhezja
wtryskiwanie
wytrzymałość na odrywanie
hybrid composite
metal-polymer joint
hybrid joint
epoxy resin
adhesion
injection moulding
peel strength
Opis:: W artykule przedstawiono wyniki badań wytrzymałości na odrywanie elementów hybrydowych typu metal-polimer wytworzonych w technologii wtryskiwania. W celu zwiększenia adhezji powierzchnie stalowe zostaly przygotowane poprzez obróbkę strumieniowo-ścierną i modyfikację chemiczną. Zastosowano również warstwy epoksydowe pomiędzy wtryskiwanym polimerem a blachami stalowymi. Zbadano wpływ różnych kompozycji epoksydowych na wytrzymałość na odrywanie połączenia metal-polimer.
In article are presented results of the peel strength tests of metal-polymer hybrid elements obtained during injection molding process. To increase adhesion the metal surfaces were prepared by abrasive blasting and chemical etching. Also epoxy layers were applied between injected thermoplastic polymer and steel plates. The influence of various epoxy compositions were investigated for peel strength of metal-polymer joints.
Źródło:: Przetwórstwo Tworzyw; 2015, T. 21, Nr 3 (165), 3 (165); 271-274
1429-0472
Pojawia się w:: Przetwórstwo Tworzyw
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: PN-emissions with increased lube oil consumption of GDI car with/without GPF
Autorzy:: Czerwinski, J.
Comte, P.
Güdel, M.
Kurzwart, M.
Mayer, A.
Powiązania:: https://bibliotekanauki.pl/articles/245468.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: PN-emissions
road transport
combustion engine
air pollution
environmental protection
normy emisji
transport drogowy
silnik spalinowy
zanieczyszczenie powietrza
ochrona środowiska
Opis:: The particle number (PN) emissions are increasingly considered in the progressing exhaust gas legislation for onand off- road vehicles. The invisible nanoparticles penetrate like a gas into the living organisms and cause several health hazards. The present paper shows how the PN- and gaseous emissions of a modern GDI (Abbreviations see at the end of this paper) vehicle change, when there is an in-creased lube oil consumption. What are the potentials of a gasoline particle filter to reduce the emissions? The lube oil consumption was simulated by mixing 2% vol. lube oil into the fuel. A non-coated GPF was mounted at tailpipe, so only the filtration effects were indicated. The tests were performed at transient (WLTC) and at stationary (SSC) operating conditions. It has been shown that the increased lube oil consumption significantly increases the PN-emissions and the applied high quality GPF eliminates these emissions very efficiently.
Źródło:: Journal of KONES; 2017, 24, 1; 102-112
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Investigations of emissions of reactive substances NO2 and NH3 from passenger cars
Autorzy:: Czerwinski, J.
Comte, P.
Güdel, M.
Lemaire, J.
Mayer, A.
Heeb, N.
Berger, H.
Reutimann, F.
Powiązania:: https://bibliotekanauki.pl/articles/133799.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: exhaust emissions
reactive substances
NO2
NH3
emisje spalin
substancje reaktywne
Opis:: Public concern and complaints regarding ambient air in zones of dense traffic pertains to two compounds of nitrogen, nitrogen dioxide (NO₂) and ammonia (NH₃); both are toxic and strongly irritant, such that legal limitations are under discussion. This paper contributes to measuring methods as already in part proposed by GRPE subgroup WLTP-DTP (Worldwide Light Duty Test Procedures – Diesel Test Procedures) for NO₂. Despite legally lowered NO_x emission levels, lumping both, NO₂ and NO, levels of NO₂ have risen in cities and agglomerations as a result of both, deployed catalytic exhaust after-treatment devices and low sulphur Diesel fuels. In present tests two different combinations of NO₂ measuring methods as proposed by WLTP were checked on Diesel cars for practicability in handling and accuracy. These integral, indirect methods (NO₂ = NO_x – NO) have been found as useful tools for estimate of NO₂ and with use of appropriate analyzers a satisfactory accuracy was attained. Furthermore, attention was brought to ammonia (NH₃) emitted by gasoline engines with three way catalysts (TWC) which ought not to be ignored while on the other hand SCR systems for Diesel engines are strictly regulated. Emission levels of more recent TWC turned out to be mostly below 20 ppm NH₃. Vehicle of older technology exhibited significantly higher levels, about 10 times more. As chemical reactions depend on pressure and temperature (= i.e. flow condition in CVS-tunnel) as well as concentrations, doubts need to be considered on accuracy of results based on chemical reactive substances. Nevertheless, clear tendencies regarding changes of concentrations of NO₂ and NH₃ along the path-way could not be observed.
Źródło:: Combustion Engines; 2016, 55, 3; 24-33
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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