Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "G. P." wg kryterium: Autor

  Lista filtrów

Dostawca treści

Podbaza

Wyrównaj
Wyświetlanie 1-15 z 2107
Tytuł:
"Fokusowe" gatunki w ochronie przyrody w lasach
"Focal" species in nature protection in forests
Autorzy:
Zawadzka, D.
Drozdowski, S.
Zawadzki, G.
Madej, W.
Pierchala, P.
Soltys, A.
Powiązania:
https://bibliotekanauki.pl/articles/881676.pdf
Data publikacji:
2017
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
lesnictwo
ochrona przyrody
lasy
gatunki chronione
bielik
bobr europejski
gluszec
wilk
zubr
cis
dab
dab Bartek
znaczenie kulturowe
znaczenie ekologiczne
znaczenie spoleczne
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2017, 19, 1[50]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
"Red book" of the Hungarian landscapes atlas of the threaths on the natural functioning of the 229 Hungarian microregions
Autorzy:
Csorba, P.
Szabo, J.
Bodnar, R.
Szilagyi, Z.
Szabo, G.
Szabo, S.
Novak, T.
Fazekas, I.
Powiązania:
https://bibliotekanauki.pl/articles/87960.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Geograficzne
Tematy:
indexes for landscape functioning
landscape fragmentation
natural hazards
land use change
Hungary
Opis:
For the good established landscape planning landscape protection and landscape management actions have to take into consideration the actual conditions of the landscape elements. Earlier we dealt with the stability of the landscapes (Kerényi, Csorba, 1996), recently started to investigate the most important factors, which are endangers the proper functioning of the landscapes. Results are calculated for 229 microregions of the country, which are elements of the official landscape hierarchy of Hungary described in the Cadastral of Microregions of Hungary. The average size of the microregions are 100-500 km2. There are certain factors among which some have already elaborated, and others are being worked on yet. Degree of ecological fragmentation of the microregions by roads, railway lines and settlements was determined during the last year. In the case of large settlements the extent of inner parts, traffic intensities of the roads was taken into account, while in the case of railroads it was taken into consideration whether railway lines are single or double tracked. Results were purified using a weighting, where the location of the protected natural areas compared to the situation of the given settlement, roads or railroads was taken into consideration. In the calculations it was taken into account as well that the agglomeration processes of the large settlements may restrict the ecological gates and corridors of the migration of plant and animal species. From the series of maps on natural threats on microregional level, the map of the hazards of drought is presented first. The map gives a definite answer to the question, in which microregions is profitable to establish irrigation systems; and how high is the uncertainty of the rate of their utilization. Global warming, however, may modulate the map resented here remarkably in the next decades. Microregions that have been classified into transition categories with moderate or medium level of drought hazard may fall into categories of serious hazard of drought in the future. A synthesizing map has been completed by summing the seven datasets of the indicator group of natural hazards and the weighting of the subsets. Landscape planning is strongly affected by tendencies of macro economy on the present land use structure. EU agricultural policies have just started to affect strongly on Hungarian land use structure, therefore attempts have been made in order to forecast their impacts. Present Hungarian land use structure has been compared to priorities of the EU. Prospective shifts in land use structure have been determined for the 35 regions of Hungary. According to the 8-10 factors mentioned above, we shall have a detailed database to evaluate the microregions of Hungary in order to characterize the most threatened landscapes, and the most dangerous impacts on the landscape functioning.
Źródło:
Prace Komisji Krajobrazu Kulturowego; 2008, 8; 43-60
1896-1460
2391-5293
Pojawia się w:
Prace Komisji Krajobrazu Kulturowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
20 lat działalności Stowarzyszenia Geomorfologów Polskich
Autorzy:
Zwoliński, Z.
Kostrzewski, A.
Migoń, P.
Rachlewicz, G.
Powiązania:
https://bibliotekanauki.pl/articles/295220.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
Stowarzyszenie Geomorfologów Polskich
geomorfologia
historia
Źródło:
Landform Analysis; 2011, 16; 3-13
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D Multi-Domain MFS Analysis of Sound Pressure Level Reduction Between Connected Enclosures
Autorzy:
Godinho, L.
Branco, F. G.
Mendes P., A.
Powiązania:
https://bibliotekanauki.pl/articles/177013.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Method of Fundamental Solutions (MFS)
domain decomposition
closed spaces
sound pressure level reduction
Opis:
In this paper, the authors study the 3D propagation of sound waves between two closed spaces. The separation element between the two rooms is considered to include either a small opening or a homogeneous lightweight panel, coupling the two spaces. A numerical study of this configuration is performed, trying to understand the influence of the position and geometry of this opening in the sound pressure level reduction curve at low and midfrequencies. Additionally, the coupling effect between the two acoustic spaces is analyzed, in order to better understand its importance when determining the sound pressure level reduction. Different boundary conditions are ascribed to the walls of these rooms, simulating both the completely reflecting and partially absorbing surfaces. The numerical modelling was performed using a multi-domain formulation of the Method of Fundamental Solutions (MFS). The system is composed of two coupled rooms, limited by rigid or by absorbing walls, and separated by a thin wall (tending to null thickness) with a small opening. An experimental validation of the proposed model is presented, comparing its results with those found experimentally for a reduced-scale model. It is important to note that, for such a configuration, a traditional single-domain approach using methods like the MFS or the BEM would lead to undetermined equation systems, and thus the proposed model makes use of a domain decomposition technique.
Źródło:
Archives of Acoustics; 2011, 36, 3; 575-601
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D numerical study of wire-cylinder precipitator for collecting ultrafine particles from Diesel exhaust
Trójwymiwrowa analiza numeryczna elektrofiltru typu przewód-cylinder do wyłapywania bardzo dronych cząsteczek ze spalin silnika Disla
Autorzy:
Farnoosh, N.
Castle, G.S.P.
Adamiak, K.
Powiązania:
https://bibliotekanauki.pl/articles/408072.pdf
Data publikacji:
2012
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
elektrofiltry
elektrohydrodynamika
wyładowanie koronowe
trajektorie cząstek
sprawność osadzania
electrostatic precipitators
electrohydrodynamics
corona discharge
particle trajectories
collection efficiency
Opis:
A precipitator section is modeled numerically in 3D to determine the collection efficiency for diesel exhaust particulates. It consists of a circular tube and a wire electrode mounted at the center of the tube, supplied with a negative high de voltage, while the tube is electrically grounded. The analytical solutions of Poisson and current continuity equations are implemented to obtain the ionic space charge density and electric potential distributions in the channel. Commercial CFD FLUENT software is used to solve the turbulent flow mode. Effects of some electrical characteristics of diesel exhaust particulates on collection efficiency are assessed.
Jedna sekcja elektrofiltru została zamodelowana numerycznie w celu wyznaczenia sprawności wyłapywania cząstek ze spalin silnika Diesla. Elektrofiltr składa się z uziemionej cylindrycznej rury i cienkiej elektrody zasilanej wysokim napięciem ujemnym. Do obliczeń wykorzystano analityczne rozwiązanie równania Poissona i równania ciągłości ładunku oraz komercyjny software FLUENT do obliczeń przepływu gazu. Cząstki były ładowane w wyniku łącznych mechanizmów polowych i dyfuzyjnych. Zbadany został efekt niektórych parametrów procesu na sprawność filtrowania.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2012, 2; 49-52
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
4-amine-2-mercaptopyrimidine modified silica gel applied in Cd(II) and Pb(II) extraction from an aqueous medium
Autorzy:
Pereira, A.S.
Ferreira, G.
Caetano, L.
Castro, R.S.D.
dos Santos, A.
Padilha, P.M.
Castro, G.R.
Powiązania:
https://bibliotekanauki.pl/articles/778413.pdf
Data publikacji:
2010
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
4-amino-2-merkaptopirymidyna
krzemionka
ekstrakcja metali
środowisko wodne
4-amine-2-mercaptopyrimidine
silica
metal extraction
aqueous medium
Opis:
This paper discusses silica surface modification by a process involving a two-step reaction: anchoring of a silylating agent, followed by an attachment of a 4-amino-2-mercaptopyrimidine molecule. The modified material (Si-BP) was successfully characterized by the FTIR spectra, which revealed amine absorption bands, and through 13C and 29Si NMR spectra, which confirm the proposed structure of the modified silica (Si-BP). Si-BP was used to extract cadmium and lead from an aqueous medium at 298 K. The Si-BP kinetics towards metal ions was very fast, i.e., about 10 minutes, although extraction was significantly impaired at pH 3. The series of adsorption isotherms were adjusted to a modified Langmuir equation and the maximum extraction capacity was 0.193 and 0.387 mmol g-1 for Cd(II) and Pb(II), respectively. An analysis of the Ř values lead to the inference that the resulting metal ligand complex was type 1:1.
Źródło:
Polish Journal of Chemical Technology; 2010, 12, 1; 7-11
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A case study of pre-service cracks in the concrete decks of a two-level basement car park
Studium przypadku zarysowania dwupoziomowego parkingu podziemnego
Autorzy:
Kossakowski, P. G.
Ślusarczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/231057.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
beton
zapobieganie uszkodzeniu
strop betonowy
rysa
garaż podziemny
studium przypadku
concrete
failure prevention
concrete floor
crack
basement car park
Opis:
This paper deals with the prevention of failure of structural elements made of reinforced concrete. It discusses preservice cracks in the concrete decks of an underground parking facility. The cracks were assessed by analyzing their morphology. The results were used to determine the crack causes and the mechanisms of their initiation and growth. Some design solutions to prevent or reduce the occurrence of pre-service cracks are also presented.
Przy realizacji budynku na drogim gruncie standardem jest wykonywanie kondygnacji podziemnych. Są one niezbędne chociażby ze względu na zapewnienie odpowiedniej liczby miejsc parkingowych. Niejednokrotnie zdarza się, że poziomy podziemne dochodzą do granic działki. Wymaga to zastosowania odpowiedniej technologii realizacji. Najczęściej w tym celu jest wykorzystywany zamknięty układ ścian szczelinowych. Przedsięwzięcia tego typu wymagają zarówno dobrych projektów jak i starannego wykonawstwa. Ich złożoność sprzyja powstawaniu różnego typu usterek. W artykule na stosownym przykładzie opisano jedną z możliwych. Dotyczy ona niepożądanego zarysowania podziemnych stropów parkingu ujawnionego tuż przed rozpoczęciem eksploatacji.
Źródło:
Archives of Civil Engineering; 2017, 63, 2; 79-97
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Classification System for Characterization of Physical and Non-Physical Work Factors
Autorzy:
Genaidy, A.
Karwowski, W.
Succop, P.
Kwon, Y. G.
Alhemoud, A.
Goyal, D.
Powiązania:
https://bibliotekanauki.pl/articles/89768.pdf
Data publikacji:
2000
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
performance
work-factor system
classification
klasyfikacja
system pracy
wydajność
Opis:
A comprehensive evaluation of work-related perfomance factors is a prerequisite to developing integrated and long-term solutions to workplace performance improvement. This paper describes a work-factor classification system that categorizes the entire domain of workplace factors impacting performance. A questionnaire-based instrument was developed to implement this classification system in industry. Fifty jobs were evaluated in 4 different service and manufacturing companies using the proposed questionnaire-based instrument. The reliability coefficients obtained from the analyzed jobs were considered good (.589 to .862). In general, the physical work factors resulted in higher reliability coefficients (.847 to .862) than non-physical work factors (.589 to .768).
Źródło:
International Journal of Occupational Safety and Ergonomics; 2000, 6, 4; 535-555
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A computational evaluation of sedentary lifestyle effects on carotid hemodynamics and atherosclerotic events incidence
Autorzy:
Caruso, M. V.
Serra, R.
Perri, P.
Buffone, G.
Calio, F. G.
Franciscis, S.
Fragomeni, G.
Powiązania:
https://bibliotekanauki.pl/articles/307512.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
siedzący tryb życia
pozycja siedząca
komputerowa mechanika płynów
CFD
miażdżyca
sedentary lifestyle
sitting
computational fluid dynamics
carotid bifurcation
atherosclerosis
standing
Opis:
Purpose: Hemodynamics has a key role in the atheropathogenesis. Indeed, atherosclerotic phenomena occur in vessels characterized by complex geometry and flow pattern, like the carotid bifurcation. Moreover, the lifestyle is a significant risk factor. The aim of this study is to evaluate the hemodynamic effects due to two sedentary lifestyles -sitting and standing positions- in the carotid bifurcation in order to identify the worst condition and to investigate the atherosclerosis incidence. Methods: The computational fluid dynamics (CFD) was chosen to carry out the analysis, in which in-vivo non-invasive measurements were used as boundary conditions. Furthermore, to compare the two conditions, one patient-specific 3D model of a carotid bifurcation was reconstructed starting from computer tomography. Different mechanical indicators, correlated with atherosclerosis incidence, were calculated in addition to flow pattern and pressure distribution: the time average wall shear stress (TAWSS), the oscillatory shear index (OSI) and the relative residence time (RRT). Results: The results have highlighted that the bulb and the external carotid artery emergence are the most probable regions in which atherosclerotic events could happen. Indeed, low velocity and WSS values, high OSI and, as a consequence, areas with chaotic-swirling flow, with stasis (high RRT), occur. Moreover, the sitting position is the worst condition: considering a cardiac cycle, TAWSS is less than 17.2% and OSI and RRT are greater than 17.5% and 21.2%, respectively. Conclusions: This study suggests that if a person spends much time in the sitting position, a high risk of plaque formation and, consequently, of stenosis could happen.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 3; 43-52
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A computational fluid flow analysis of a disc valve system
Autorzy:
Czop, P.
Śliwa, P.
Gniłka, J.
Gąsiorek, D.
Wszołek, G.
Powiązania:
https://bibliotekanauki.pl/articles/244640.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
valve system
computational fluid flow analysis
simulation
Opis:
Noise concerns in shock absorbers can be divided into two categories. The first is fluid flow noise, or “swish noise”, caused by the oil being forced through openings in the valves. The type and temperature of the oil, its velocity and the orifice geometry all have an effect on this. In addition, the structural design of the shock absorber shell may either reduce or amplify the noise. The second type of shock absorber noise is often described as regular operational noise or “chuckle noise”. It can be observed in vehicles during low-displacement, higher-frequency events, such as driving over a slightly rough road. This effect measurable as a force discontinuity into the vehicle and can come from a number of sources in the shock absorber, e.g. hydraulic transitions. It is often traceable to the valve discs closing and opening, but can also be caused by cavitation/aeration in the oil and air being pulled through the valves. The work on noise improvement reported in this paper has been started using conventional shock absorbers to be extended and will cover in the future variable damping shock systems as well. The paper gives an overview about the configurations of a typical valve system including three basic regimes of operation, which correspond to the amount of oil flowing through a valve cavity. The aim of this work was to propose a finite element fluid flow model, which can be used in order to reduce the velocity of fluid flow through a cavity of a shock absorber valve. High flow velocity can cause high-content frequency vibrations and, in turn, audible noise. The model will be used for initial screening of new valve concepts and on the other hand to improve the currently use ones.
Źródło:
Journal of KONES; 2011, 18, 1; 117-122
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A concept of an electricity storage system with 50 MWh storage capacity
Koncepcja zasobnika energii elektrycznej o zdolności magazynowania 50 MWh
Autorzy:
Paska, J.
Kłos, M.
Antos, P.
Błajszczak, G.
Powiązania:
https://bibliotekanauki.pl/articles/397626.pdf
Data publikacji:
2012
Wydawca:
ENERGA
Tematy:
magazynowanie energii elektrycznej
bateryjny zasobnik energii
pneumatyczny zasobnik energii
electricity storage systems
battery energy storage system
compressed air storage system
Opis:
Electricity storage devices can be divided into indirect storage technology devices (involving electricity conversion into another form of energy), and direct storage (in an electric or magnetic fi eld). Electricity storage technologies include: pumped-storage power plants, BES Battery Energy Storage, CAES Compressed Air Energy Storage, Supercapacitors, FES Flywheel Energy Storage, SMES Superconducting Magnetic Energy Storage, FC Fuel Cells reverse or operated in systems with electrolysers and hydrogen storage. These technologies have diff erent technical characteristics and economic parameters that determine their usability. This paper presents two concepts of an electricity storage tank with a storage capacity of at least 50 MWh, using the BES battery energy storage and CAES compressed air energy storage technologies.
Urządzenia umożliwiające magazynowanie energii elektrycznej dzielimy na: urządzenia technologii magazynowania pośredniego (z udziałem konwersji energii elektrycznej na inny rodzaj energii) i magazynowania bezpośredniego (w polu elektrycznym lub magnetycznym). Do technologii umożliwiających magazynowanie energii elektrycznej należą: elektrownie wodne pompowe; akumulatory (BES – ang. Battery Energy Storage); pneumatyczne zasobniki energii (CAES – ang. Compressed Air Energy Storage); superkondensatory (ang. Supercapacitors); kinetyczne zasobniki energii (FES – ang. Flywheel Energy Storage); nadprzewodzące zasobniki energii (SMES – ang. Superconducting Magnetic Energy Storage); ogniwa paliwowe (FC – ang. Fuel Cells) rewersyjne lub pracujące w układach z elektrolizerami i magazynowaniem wodoru. Technologie te charakteryzują się różnymi właściwościami technicznymi i parametrami ekonomicznymi, warunkującymi możliwości ich zastosowania. W artykule przedstawiono dwie koncepcje zasobnika energii elektrycznej o zdolności magazynowania co najmniej 50 MWh, wykorzystującą magazy
Źródło:
Acta Energetica; 2012, 2; 32-42
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A CPW-fed Sigma-shaped MIMO Antenna for Ka Band and 5G Communication Applications
Autorzy:
Madhav, B. T. P.
Devi, G. J.
Lakshman, P.
Anilkumar, T.
Powiązania:
https://bibliotekanauki.pl/articles/309564.pdf
Data publikacji:
2018
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
5G
coplanar waveguide
Ka band
MIMO
satellite downlink
Opis:
This article presents a MIMO compact antenna measuring 45×45×1.6 mm, on the FR4 substrate, proposed for Ka band and 5G communication applications. The proposed design is suitable to overcome the issues connected with massive MIMO. It has four-sigma-shaped radiating elements and a c-shaped ground plane with coplanar waveguide feeding. Its compact dimensions suit it for most existing communications systems. The aerial operates in the 21–30 GHz range, which covers Ka and 5G communication bands. The proposed antenna exhibits the average efficiency of more than 76% within its operating band and gives a minimum signal to noise plus interference ratio. The presented antenna covers several services, such as Ka band satellite downlink applications and future 5G communication applications.
Źródło:
Journal of Telecommunications and Information Technology; 2018, 4; 97-106
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A critical review and reinterpretation of bio-, litho- and seismostratigraphic data of the Southern Baltic deposits
Autorzy:
Zachowicz, J.
Miotk-Szpiganowicz, G.
Kramarska, R.
Uścinowicz, Sz.
Przedziecki, P.
Powiązania:
https://bibliotekanauki.pl/articles/1204982.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pollen and diatoms diagrams
14C datings
bio- litho- and seismostratigraphy
Late Pleistocene
Holocene
southern Baltic Sea
Opis:
The aim of this study was the reinterpretation of the published and unpublished Late-Pleistocene and Holocene pollen and diatom diagrams of deposits from the sedimentary basins of the Southern Baltic Sea and the correlation of the distinguished biostratigraphic units with lithological parameters, seismostratigraphic units. Chronostratigraphic subdivision of the Late Pleistocene and Holocene was also made. To facilitate the correlation and reinterpretation of the results of biostratigraphic (palynological and diatom) analyses, new unified and simplified diagrams were drawn using the POLPAL software. Such diagrams were constructed for all the sites under comparison, even for those of no numerical data. In such cases, the published diagrams were scanned and their percentage values were the basis for new diagrams. A review and reinterpretation of biostratigraphic data show an almost complete lack of palynological documentation and diatom diagrams for the Late Pleistocene period and poor documentation for the Early Holocene. Middle and Late Holocene Baltic muds have the best biostratigraphic documentation and radiocarbon dating, which greatly facilitates their location on the geological time scale. Among the Southern Baltic postglacial sediments three lithostratigraphic units were identified. They differ in their lithological features reflecting the conditions prevalent in the sedimentary basin during deposition. It should be noted that these units meet no formal criteria for distinguishing lithostratigraphic units. Similarly, within the Late Pleistocene and Holocene sediments of Southern Baltic deep-water basins, three main seismostratigraphic complexes have been identified. The integrated analysis of seismoacoustic profiles, lithological profiles of cores and reinterpretated biostratigraphic data allow a correlation of the bio-, litho- and seismostratigraphic units with chronostratigraphic units and Baltic evolutionary phases.
Źródło:
Polish Geological Institute Special Papers; 2008, 23; 117-138
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A critical review of characteristic techniques for improving the cutting performance of coated tools
Autorzy:
Bouzakis, K.-D.
Skordaris, G.
Bouzakis, E.
Kotsanis, T.
Charalampous, P.
Powiązania:
https://bibliotekanauki.pl/articles/99840.pdf
Data publikacji:
2017
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
wear
pre-treatments
post-treatments
PVD coatings
Opis:
The cutting performance of PVD coated tools can be significantly improved by applying optimized PVD processes, film architectures, as well as appropriate pre- and post- treatments of the substrates and coated surfaces respectively. Substrate pre-treatments aim, among others, at improving the coating adhesion. In this way, lower coating loads develop during cutting leading to a decelerated wear evolution. Furthermore, the effect of various PVD process parameters and film architectures such as of adhesive interlayers, Ar+ ions bombardment, thickness distribution and multi-layer structure on the coated tool life is demonstrated. Finally, the potential to increase the wear resistance of coated tools via micro-blasting and to render sharp cutting edges mainly of small diameter tools more stable by rounding them via grinding is presented. Micro-blasting parameters such as of grain material, pressure, dry or wet etc., affect significantly the superficial coatings’ hardness and brittleness and in this way their wear behaviour. To check the effectiveness of all these methods, innovative coating's characterization procedures providing information concerning the film and substrate properties as well as adhesion are applied, thus reducing the required experimentation time.
Źródło:
Journal of Machine Engineering; 2017, 17, 2; 25-44
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 2107

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies