Informacja

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

Wyszukujesz frazę "composite alloy" wg kryterium: Temat


Tytuł:
Researches novel materials on the pistons with low hysteresis to combustion engines
Autorzy:
Sieminska, B.
Slawinski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/243012.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
engine pistons
composite alloy
thermal expansion
hysteresis
Opis:
The researches were carried out at the use of the precise dilatometer of the firm BAHR 802/801. The device makes possible the registration of changes of measurements of the sample in the function of the temperature. Measurements in the simpler and differential are possible. Heating and cooling is performed in the special device, which realizes the programme temperature, controlled computer. Changes of dimensions are measured with an inductive sensor. Samples were placed in the quartz-pipe and changes of their length were transferred by quartz-rods. The temperature of tested material was measured by means of the Pt-PtRh thermocouple. Material on the pistons has a fundamental meaning for the value of the clearances between the cylinder and the piston. Too small clearness between the piston and cylinder on the cold engine cannot be applying, because during the work of an engine it would be able to occur seizing of an engine. From here, also the large resistance on seizing of material of the piston is essential. Investigated composite materials performed based on piston-silumins AK12 and AK18 in which a composite addition was silicon carbide (SiC) and ferric sulphide (FeS).
Źródło:
Journal of KONES; 2012, 19, 4; 549-554
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Verification of the precise position of the aircraft in air navigation based on the solution of the RTK-OTF technique
Autorzy:
Kowalski, M.
Jankowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/242780.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
Diesel engine
engine piston
composite alloy
thermal stability
Opis:
Certain results of the comparative studies of the high-speed Diesel engine V-12 of the “W” series were presented in the article. The engine was modernised in regard of possibilities to achieve better performances at specific fuel consumption, smaller exhaust emission, smaller scavenge, lower noise and better thermal stability. The subject of this work is the piston cast of novel composite silumin. The development of novel composite silumin (aluminium-silicon alloy), which contains a little more Copper and Nickel, and the introduction of novel alloyed elements, such as Chromium, Molybdenum, Tungsten, increases the strength of the alloy and its thermal stability during successive heating and cooling. The pistons made of this alloy may have a little bigger outside diameter than the pistons made of PA-12 standard alloy, and a smaller clearance between the piston and cylinder liner. The pistons made of standard and novel alloy were mounted successively in the "W" engine. The full load and part load curves were determined. The lubrication oil consumption, fuel consumption, exhaust emission, blow-by and noise were determined too. The article presents the results of the above-mentioned research. The novel composite alloy enables further engine modernization because the engine should operate at higher pressure and temperature in the combustion chamber.
Źródło:
Journal of KONES; 2017, 24, 4; 99-108
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dilatometric researches of novel alloy for combustion engine pistons
Autorzy:
Żurek, J.
Slawinski, Z.
Jankowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/243032.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine piston
composite alloy
piston sample elongation
hysteresis
piston clearance
Opis:
The article presents dilatometric research results of composite alloy (in-situ) for combustion engines piston. Researches were performed with a precise dilatometer. Alloy's research test stand and test results including relative elongation, course of derivative of dimension increasing versus time with phase transition and course of coefficient of linear thermal expansion α for composite alloy versus temperature are presented in the article. Novel composite alloy allows getting a minimum difference of the coefficient of linear thermal expansion α during heating and cooling. In particular, the chemical composition of the novel composite silumin alloys; ATD of standard alloy – silumin Ak12 and novel composite alloy; schema of research stand and view of the measuring-head of the extension; course of the coefficient of linear thermal expansion α versus temperature during heating and cooling for the standard alloy and novel composite alloy; course of the relative piston elongation ΔL/Lo versus temperature during heating and cooling for the standard alloy and novel composite alloy; course of the derived function of the extension in relation to time dL/dt versus temperature for the standard alloy on pistons and novel composite alloy; course of the relative elongation in function of time during ageing of composite alloy at the temperature of 200°C with two-stage ageing process; course of the relative elongation in function of time during ageing of composite alloy at the temperature of 200°C for the first stage and second stage are presented in the article.
Źródło:
Journal of KONES; 2016, 23, 3; 585-596
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research performance of novel design of diesel engine
Autorzy:
Kowalski, M.
Jankowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/949487.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
Diesel engine
engine piston
composite alloy
thermal stability
Opis:
Certain results of the comparative studies of the high-speed Diesel engine V-12 of the “W” series were presented in the article. The engine was modernised in regard of possibilities to achieve better performances at specific fuel consumption, smaller exhaust emission, smaller scavenge, lower noise and better thermal stability. The subject of this work is the piston cast of novel composite silumin. The development of novel composite silumin (aluminium-silicon alloy), which contains a little more Copper and Nickel, and the introduction of novel alloyed elements, such as Chromium, Molybdenum, Tungsten, increases the strength of the alloy and its thermal stability during successive heating and cooling. The pistons made of this alloy may have a little bigger outside diameter than the pistons made of PA-12 standard alloy, and a smaller clearance between the piston and cylinder liner. The pistons made of standard and novel alloy were mounted successively in the "W" engine. The full load and part load curves were determined. The lubrication oil consumption, fuel consumption, exhaust emission, blow-by and noise were determined too. The article presents the results of the above-mentioned research. The novel composite alloy enables further engine modernization because the engine should operate at higher pressure and temperature in the combustion chamber.
Źródło:
Journal of KONES; 2017, 24, 4; 99-108
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Researches of novel composite pistons for combustion engines
Autorzy:
Jankowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/247291.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
engine pistons
composite alloy
thermal expansion
hysteresis
engine test
Opis:
Novel composite material was worked out based on experiences and researches realized in the Institute of Aviation, the Lodz Technical University and PZL WOLA Company. Actually applied silumins on the pistons secure them high-quality for durability, low Rm and HB values at increased temperature, high hysteresis of the coefficient a during heating and cooling, high clearance between the piston and the cylinder, increased oil consumption, blowthrough and obtainment relatively low-power engine. Thereby works concerning elaborations of novel composite material based on the standard silumin with better from at present applied on the piston properties are presented. Novel composite material on the pistons has mechanical properties in the ambient temperature: Rm ≥ 400 MPa; Rp0.2 ≥ 330 MPa; A5 ≥ 3.5%; HB ≥ 130 and in the temperature 250°C: Rm ≥ 320 MPa; Rp0.2 ≥ 240 MPa; A5 ≥ 5%; HB ≥ 90. Metallographic and ATD researches, the researches of the hardness, the researches of Rm, Rp0.2 and A5, the researches of the coefficient of thermal expansion "α", engine researches were performed. Curves ATD and the microstructure the alloy are presented. Test results of the S12-U diesel engine engine are introduced too.
Źródło:
Journal of KONES; 2013, 20, 4; 141-146
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of novel composite pistons for diesel engine
Autorzy:
Jankowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/247362.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
diesel engine
piston engine
composite alloy
combustion engine performance
Opis:
The paper presents the requirements to be met by diesel engines and their components, in particular pistons for engines of military vehicles. These requirements are related to the mass of modern military vehicles, which has greatly increased. Materials for the piston should have a good strength properties and low hysteresis of thermal expansion coefficient α across the range of operating temperatures, good resistance to galling, low abrasion, low coefficient of friction and good functional properties. On the clearance of the piston in the cylinder, the coefficient of thermal expansion α and its hysteresis has a decisive influence. The paper includes information on the piston working clearances, the requirements for pistons materials, their chemical composition, standard materials for the forged pistons, for the cast pistons (silumin alloys) and for the composite pistons. The paper presents the changes in coefficient of thermal expansion for the alloy in the raw state and after heat treatment and pistons made of new composite material prior to motor testing and after these tests. The completed new pistons have a lower coefficient of thermal expansion and lower hysteresis α, which allows reducing the running piston and cylinder clearances with the resulting effects.
Źródło:
Journal of KONES; 2014, 21, 4; 211-216
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of new developments in machining of aerospace materials
Autorzy:
Jemielniak, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1428707.pdf
Data publikacji:
2021
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
machining
aerospace materials
nickel alloy
titanium alloy
composite
Opis:
The paper presents an update of the recent literature on advances in machining of difficult to machine materials such as nickel and titanium-based alloys, and composites used in aeroengine and aerostructure applications. The review covers the following issues: advances in high-performance cooling techniques as cryogenic machining, minimum quantity lubrication, the combination of MQL and cryogenic cooling, and high-pressure lubricoolant supply and hybrid cutting processes – vibration assisted machining (both low and high frequency), laser, plasma and EDM assisted machining. Examples of applications in industrial processes are also given.
Źródło:
Journal of Machine Engineering; 2021, 21, 1; 22-55
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue Life and Microstructure after Multiple Remelting of A359 Matrix Composites Reinforced with SiC Particles
Autorzy:
Klasik, A.
Maj, M.
Pietrzak, K.
Wojciechowski, A.
Sobczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/352210.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
alloy
composite
microstructure
properties
recycling
Opis:
The article presents the results of fatigue life tests and microstructure examinations of A359 alloy matrix composites (F3S.10S and F3S.30S) containing 10 and 30wt% of SiC particles, subjected to multiple remelting by conventional gravity casting. Mechanical characteristics were determined in a modified low cycle fatigue (MLCF) test, enabling rapid estimation of fatigue life and other mechanical parameters in practice of any material. Qualitative and quantitative metallographic examinations were also carried out. The quantitative evaluation of microstructure was performed by computer image analysis. A set of geometrical parameters of the reinforcing particles, pores and eutectic precipitates present in the metal matrix was determined. The relationships between the mechanical parameters, structural characteristics and the number of remelting operations were presented. It was found that up to the fourth remelting, the mechanical characteristics, including fatigue life, are slightly deteriorated but decrease gradually in the subsequent operations of remelting. The observed effect is mainly due to the shrinkage porosity occurring as a result of gravity casting. To eliminate this defect, the use of squeeze casting process was recommended. It has also been shown that multiple remelting can be an easy and economically well-founded alternative to other more expensive recycling methods.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 4; 2123-2128
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Heat Treatment on Abrasive Wear Resistance of Silumin Matrix Composite Castings
Autorzy:
Gawdzińska, K.
Bryll, K.
Nagolska, D.
Powiązania:
https://bibliotekanauki.pl/articles/352168.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal composite castings
thermal treatment
tribology
aluminium alloy
Opis:
The authors attempted at examining the effect of heat treatment on abrasive wear resistance of metal composite castings. Metal matrix composites were made by infiltrating preforms created from unordered short fibers (graphite or silumin) with liquid aluminium alloy AlSi12(b). Thus prepared composites were subject to solution heat treatment at a temperature of 520°C for four hours, then aging at a temperature of 220°C for four hours. Abrasion resistance of the material was tested before and after thermal treatment.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 1; 177-182
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Analysis of the Features of Cast Composite Materials Based on Light Alloys Reinforced by Particles
Autorzy:
Dan, Olena
Powiązania:
https://bibliotekanauki.pl/articles/2056036.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
aluminium
magnesium
alloy
composite material
matrix
reinforcing particles
Opis:
Light alloys are widely used in industry and everyday life due to their high physical and mechanical properties, wear and corrosion resistance, as well as low cost. In this regard, the use of light alloys as a basis for composite materials is both justified and expedient. The potential of these materials has not been fully used to this day, despite the growing interest in metal matrix composites and extensive investigations aimed at the development of production technology and the introduction of advanced systems based on light matrices. The article presents a short review of the analysis of the main components of the technology of cast composite materials based on light alloys of aluminum and magnesium reinforced by particles. Particular attention is paid to the choice of the matrix alloy, the type, size and amount of reinforcing particles introduced into it, as well as the thermal-time and kinetic parameters of the process.
Źródło:
Journal of Casting & Materials Engineering; 2022, 6, 1; 8--13
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using Electrochemical Noise Technique to Evaluate the Corrosion Performance of a Reinforcement Magnesium Alloy
Autorzy:
Gobara, M.
Powiązania:
https://bibliotekanauki.pl/articles/412023.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
EN
Composite materials
corrosion
AZ91D alloy
Harrison solutions
Opis:
AZ91D magnesium alloy was reinforced by titanium and boron carbides under an inert environment using in-situ reactive infiltration technique. The corrosion properties of the reinforced magnesium alloy were investigated using Electrochemical noise (EN) techniques in dilute Harrison solutions. The moving average removal (MAR) method was used as trend removal methods. The frequency of pitting events (ƒn) and the average charge in each pitting events (q) were calculated for each EN measurements. EN results shows that the addition of reinforcement improved the corrosion resistance of the magnesium alloy (R-Mg) and no signs of corrosion were observed during 10 days of immersion in the corrosive solution.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2015, 40; 61-72
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low-velocity impact characteristics of composite plates with shape memory alloy wires
Niskoprędkościowe charakterystyki uderzeniowe płyt kompozytowych zawierających włókna ze stopów z pamięcią kształtu
Autorzy:
Rim, M.-S.
Kim, E.-H.
Lee, I.
Choi, I.-H.
Ahn, S.-M.
Koo, K.-N.
Bae, J.-S.
Roh, J.-H.
Powiązania:
https://bibliotekanauki.pl/articles/279293.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
shape memory alloy
SMAHC
composite
low-velocity impact
impact resistance
Opis:
To investigate impact characteristics of shape memory alloy hybrid com- posites (SMAHC), several experiments were performed. Tensile tests of shape memory alloy (SMA) wires were carried out to investigate thermomechanical properties, and low-velocity impact tests of SMAHC plates and conventional composite plates without SMAs at the critical energy level. low-velocity impact tests of several types of composite plates, including composite plates with embedded SMAs/Fe/Al wires and conventional composite plates, were also done. Results of these experiments show that embedding SMAs in a composite plate can improve the impact resistance. Lastly, low-velocity impact tests of SMAHC plates with SMA wires embedded at different positions through the thickness were performed in an effort to improve the impact resistance. Embedding SMA wires at a lower position in the composite plates was the most effective for improving the impact resistance.
Do analizy charakterystyk uderzeniowych hybrydowych kompozytów SMAHC zwierających włókna SMA ze stopów wykazujących efekt pamięci kształtu przeprowadzono szereg badań eksperymentalnych. Przeprowadzono próby na rozciąganie włókien SMA w celu zbadania ich właściwości termomechanicznych oraz niskoprędkościowe testy uderzeniowe płyt SMAHC oraz konwencjonalnych płyt laminowanych przy energii krytycznej. Wykonano także testy dla płyt kompozytowych zawierających włókna SMA/Fe/Al. Rezultaty doświadczeń pokazały, że wbudowanie w strukturę laminatu włókien SMA może zwiększyć odporność kompozytu na obciążenie uderzeniowe. Opisano również badania eksperymentalne płyt SMAHC z włóknami SMA wbudowanymi na różnej głębokości. Wykazano, że najlepsze parametry posiadają kompozyty z włóknami umieszczonymi możliwie daleko od uderzanej powierzchni.
Źródło:
Journal of Theoretical and Applied Mechanics; 2011, 49, 3; 841-857
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibration control using a modern control system for hybrid composite flexible robot manipulator Arm
Autorzy:
Ramalingam, S.
Mohideen, S. Rasool
Powiązania:
https://bibliotekanauki.pl/articles/27314189.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
composite material
Al6082 alloy
simulation analysis
vibration amplitude
LQR controller
Opis:
In this research, a model of a robotic manipulator flexible structure and an equation of motion for controller design is planned. The structural material chosen for the robot structure was a hybrid composite. A comparison study was carried out for the aluminium 6082 alloy for the flexible manipulator arm application. Vibration behavior and control implementation was analyzed by adding joint flexibility in the system. Using a simulation algorithm, the system parameter calculation is carried out through MATLAB software for vibration amplitude, transient period, steady-state error, and settling time of flexible robotic arm system. In a systematized motion equation, flexible robotic deflections are organized via the assumed mode (AM) and Lagrange techniques (LT). The graph analysis of hybrid composite and AL6082 materials with high stiffness coefficients is plotted. These obtained values from the plot are utilized for Linear Quadratic Regulator (LQR) controller design. The LQR output facts for both aluminium structural robotic arm and composite material robotic arms are established.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2022, 16, 2; 36--45
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kompozytowa powłoka PEEK /Bioszkło® na stopie tytanu Ti-6Al-7Nb do zastosowań w medycynie
Composite polyetheretherketone/ Bioglass® coating on Ti-6Al-7Nb alloy for medical application
Autorzy:
Moskalewicz, T.
Seuss, S.
Boccaccini, A. R.
Kot, M.
Czyrska-Filemonowicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/284982.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
stop tytanu
powłoka kompozytowa
PEEK
bioszkło
titanium alloy
composite coating
bioglass
Opis:
Kompozytową powłokę polieteroeteroketon (PEEK)/ Bioszkło osadzono metodą elektroforezy na stopie tytanu Ti-6Al-7Nb. W celu poprawy przyczepności powłoki do podłoża próbkę poddano wyżarzaniu po obróbce powierzchniowej. Mikrostrukturę powłoki charakteryzowano za pomocą mikroskopii świetlnej oraz skaningowej- i transmisyjnej mikroskopii elektronowej. Powłoka była jednorodna i porowata, nie stwierdzono obecności pęknięć. Powłoka zbudowana była z cząstek bioszkła rozmieszczonych w polimerowej osnowie. Wyniki liniowej analizy składu chemicznego wykonanej metodą STEM-EDS wskazują na dyfuzję Na ze szkła do polimeru podczas wygrzewania próbki.
A composite polyetheretherketone (PEEK)/Bioglass® coating was electrophoretically deposited on the Ti-6Al-7Nb substrate. Post heat treatment was performed to improve the adhesion of the coating to the substrate. The microstructure of the coating and a substrate was examined by light microscopy, scanning- and transmission electron microscopy methods. The coating is uniformly porous, without any cracks or presence of large voids. The coating is composed of Bioglass® particles embedded in a PEEK matrix. STEM-EDS line analysis revealed diffusion of Na from the glass to the PEEK.
Źródło:
Engineering of Biomaterials; 2012, 15, no. 116-117 spec. iss.; 13-15
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure of composite rollers with iron or nickel-iron base and hard surface layer of WC or TiC based hard alloy produced by the method of hot vacuum pressing with a liquid phase
Autorzy:
Kaverinskiy, Vladislav
Sukhenko, Zoya
Powiązania:
https://bibliotekanauki.pl/articles/2065773.pdf
Data publikacji:
2020
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
composite rollers
iron-nickel materials
powder metallurgy
hard alloy
thermocycling sustainability
Opis:
In this work the structure and properties of composite rollers with surface layer made of hard alloy were studied. The rollers were made by the powder metallurgy method with sintering during pressing and the presence of a certain liquid phase during sintering (semi-liquid sintering). WC-Co and TiC-Ni-Fe materials were used as hard alloys. Iron-carbon and iron-nickel materials were used as soft base. All of the composite layers were formed in one process. The structure of base materials and border layer of these composites were studied. Investigations of thermocycling sustainability of these composite samples were carried out.
Źródło:
Archives of Mechanical Technology and Materials; 2020, 40; 20--29
2450-9469
Pojawia się w:
Archives of Mechanical Technology and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł

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