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Tytuł:
The role of innovative composite materials in the safe and efficient operation of floating marine structures
Autorzy:
Grabian, J.
Ślączka, A.
Pawłowska, P.
Kostrzewa, W.
Powiązania:
https://bibliotekanauki.pl/articles/134918.pdf
Data publikacji:
2017
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
metal composite materials
application
transport
safety
structures
properties
Opis:
This work indicates that new and innovative materials used in the construction of floating and stationary marine structures can contribute to increased operational safety in addition to reduced service costs and frequency and other reduced operating costs, including the costs of staff and running maintenance. Such materials include metal-ceramic composites whose properties, such as high resistance to abrasive wear, favourable coefficient of friction, good thermal conductivity and low thermal expansion, allow them to be used in tribological pairs in mechanisms, control elements and actuators of various devices operating in marine power plants, thereby increasing their operational reliability. Properties of metal-ceramic composite foams, i.e. vibration and noise damping, good thermal insulation performance, dissipation of electromagnetic waves and absorption of explosive energy, make them ideal for use in shipbuilding and construction of drilling towers, at the same time increasing the levels of comfort during operation. Composite metal-ceramic foams can significantly reduce the effects of fires as they are durable, water-resistant and creep resistant thermal insulators which can limit the destruction (deformation) of steel structures. This paper presents proposals for the application of these materials to selected technical solutions in offshore structures.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 52 (124); 23-29
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication of ZrO2-Ti Composites by Slip Casting Method
Autorzy:
Łada, P.
Falkowski, P.
Miazga, A.
Konopka, K.
Szafran, M.
Powiązania:
https://bibliotekanauki.pl/articles/351354.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ceramic-metal composite
titanium
zirconium oxide
slip-casting
Opis:
Slip casting is one of the most popular shaping method in ceramic technology which allows producing a large number of elements in small period of time. This shaping technique gives a possibility to fabricate ceramic or composite materials such as ZrO2-Ti. Ti with its properties (low density, high melting point, high-temperature strength, good corrosion resistance and others) combine with ZrO2 (high flexure strength, high compression resistance and very high KIC) can be considered for different applications as constructional and functional materials. For the preparation of such composite nanometric zirconium oxide powder stabilized by 3 mol% Y2O3 and micrometric titanium powder were used. Water-based slurries with 35, 40, 45 and 50 vol.% solid phase content were prepared with 3, 10 and 15 vol.% addition of titanium powder. Zeta potential and pH of prepared slurries were considered. The pH changes were tested as a function of Ti content. The viscosity of the prepared slurries was measured. The sedimentation tests for selected slurries were performed. The casting rate for slurry of 35% solid phase with 10 vol.% Ti was examined. These measurements showed good stability of slurries. With the increasing of the solid phase concentration the density of the green bodies increased. However, the increase of the content of Ti powder reduced the density of green body samples. For selected samples the SEM observations was carried out. Composites produced by slip casting were characterized by a homogenous distribution of Ti particles in the ZrO2 matrix.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2B; 1095-1100
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:
Wybrane zastosowania kompozytów w wojsku
Selected applications of composites in the military
Autorzy:
Błachnio, Józef
Chalimoniuk, Marek
Nidzgorska, Adrianna
Powiązania:
https://bibliotekanauki.pl/articles/38952238.pdf
Data publikacji:
2023
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
kompozyt metalowy
kompozyt polimerowy
kompozyt ceramiczny
metal composite
polymer composite
ceramic composite
Opis:
W artykule przedstawiono problematykę dotyczącą zastosowania nowych rozwiązań konstrukcyjnych z wykorzystaniem materiałów kompozytowych, na szeroko rozumiane potrzeby wojska. Pokrótce przedstawiono charakterystykę kompozytów i ich właściwości, wyszczególniając ich liczne zalety, a także niedostatki. Omówiono nowe konstrukcje podzespołów samolotów, śmigłowców oraz zasygnalizowano wzrost udziału kompozytów polimerowych w lotnictwie wojskowym i cywilnym. Przedstawiono zastosowanie kompozytów do ochrony żołnierza: elastyczną kamizelkę kompozytową i hełm, do ochrony przed promieniowaniem mikrofalowym, jak również egzoszkielet żołnierza ułatwiający operacje na polu działań. Podkreślono możliwości szerokiego zastosowania materiałów kompozytowych w różnych gałęziach przemysłu.
The article presents the issue of applying new design solutions from composite materials for military needs. The article also includes composites’ characteristics and properties, underlining their benefits and deficiencies. New aircraft and helicopter subassembly designs were demonstrated, and an increased use of polymer composites in civil and military aviation was mentioned. In addition, the application of composites used for the soldier’s protection in the form of elastic composite west, helmet against microwave radiation was depicted, as well as the soldier’s exoskeleton to facilitate operations on the field. Composites are future-oriented materials applied in civil and military areas due to their properties.
Źródło:
Journal of KONBiN; 2023, 53, 4; 191-209
1895-8281
2083-4608
Pojawia się w:
Journal of KONBiN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of the metal-composite joints
Autorzy:
Derewońko, A.
Cielęta, R.
Powiązania:
https://bibliotekanauki.pl/articles/243344.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
metal-composite joint
FEM
contact problem
nonlinearity
aircraft structure
Opis:
The development and implementation of the new technologies and materials are one of the conditions allowing improving the aircraft structures. The composite materials enable to reduce the aircraft weight and keep appropriate strength and fatigue properties. Application of the composite materials in the wing elements, and metal alloys in assemblies of the aircraft fuselage requires elaboration of the appropriate method for technology joining metal and composite. Bonding eliminates breakages in the composite plies which are initiated during assembly process of the structure with mechanically fastened joints e.g. bolts [1]. The strength and stiffness of the composite depend on shape and direction of the fibre which carry the tensile and compression stresses. Shear stress and strength of the composite depend on the resin system. Therefore, the use of composites brings more complicated design approach compare to metal. The aim of the study is tofind appropriate method to determine the failure loading of the metal-composite aircraft wing pivot fitting. Numerical and laboratory investigations for metal-composite joints are presented. Interaction between the composite plies is modelled as the contact problem. It allows determining the strain and stress at the contact surfaces and stress concentration fields. Contact modelling technique is also applied to model interface between metal and composite. Engineering approach to the model full-scale co-curing triple stepped lap joint is presented. The professional engineering software tools are used to create accurate models. Tensile tests of the metal-composite joint were carried out to verify the numerical analysis methods.
Źródło:
Journal of KONES; 2008, 15, 1; 39-50
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality of the recovered metal matrix as a measure of the efficiency of the MMC recycling process
Autorzy:
Gawdzińska, K.
Nagolska, D.
Kochmańska, A.
Powiązania:
https://bibliotekanauki.pl/articles/359859.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
casting
metal matrix composite (MMC)
material recycling
Opis:
Quality of composite castings with infiltration reinforcement is dependent on many various factors. Technological parameters of the saturation process, manufacturing methods and quality of components are considered as the basic ones. During the recycling process of composite materials, the basic component that is being reclaimed is the metal matrix. The main aim of this paper is an evaluation of chemical composition and microstructure of the recovered metal matrix material. In the first stage, influence of preparation of liquid matrix metal is analyzed, with particular attention paid to its purity, degree of degassing and overheating, as well as an influence of the reinforcing material type on the final structure of composites obtained in the process of vacuum saturation. Specific of the structure and flaws occurring in such materials are of the particular concern here, as they are decisive for the methods of quality evaluation of these materials. Manufactured composite’s castings are subjected to the recycling process by a melting of the metal matrix on the second stage. The metal obtained in this way is analyzed regarding impurities occurring in its volume and, simultaneously, a comparison of evaluation methods of traditional metal alloys and metal composite castings is performed.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 37-44
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on contact between double metal composite and pipe power slip for offshore well
Autorzy:
Wang, Y.
Ai, Z.
Shi, C.
Ai, Y.
Powiązania:
https://bibliotekanauki.pl/articles/258954.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
power slip
double metal composite pipe
contact area
slip teeth
plastic damage
Opis:
The whole process of clamping offshore well double metal composite pipe was established, Reviewing the problems that in the oil and gas wells the double metal composite pipes frequently get plastic damage or even fracture failure when the power slips hold fast to the double metal composite pipe, the effect Eq. of contact area to tooth plate and double metal composite pipe was deduced, and based on the elastoplastic contact analysis theory, the theoretical Eq. was verified. For the double metal composite pipe stress, displacement and stress of drill tooth plate, influence of slip teeth plate on the double metal composite pipe damage was analyzed, The plastic damage law of the double metal composite pipe was obtained with the influence factor of the contact surface and the influence factor of the tooth crown width. the analysis showed that, The double metal composite pipe can be clamped and the contact area value of the tooth plate with the minimum damage are fixed. Several sets of teeth were produced, and then used to carry out experiments, indoor and field experiments have fully proved the accuracy of the result, The research work provides a better theoretical basis for optimal design of slip tooth plate.
Źródło:
Polish Maritime Research; 2017, S 2; 66-73
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aluminum Metal Matrix Composites with SiC, Al2O3 and Graphene – Review
Autorzy:
Aybarc, U.
Dispinar, D.
Seydibeyoglu, M. O.
Powiązania:
https://bibliotekanauki.pl/articles/380332.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
SiC
Al2O3
graphene
aluminum metal matrix composite
metal matrix composite
grafen
kompozyt osnowy metalowej
kompozyt metalowy
Opis:
Light weight, low density with high mechanical properties and corrosion resistance, aluminum is the most important material and is commonly used for high performance applications such as aerospace, military and especially automotive industries. The researchers who participate in these industries are working hard to further decrease the weight of end products according to legal boundaries of greenhouse gases. A lot of research was undertaken to produce thin sectioned aluminum parts with improved mechanical properties. Several alloying element addition were investigated. Yet, nowadays aluminum has not met these expectations. Thus, composite materials, particularly metal matrix composites, have taken aluminum’s place due to the enhancement of mechanical properties of aluminum alloys by reinforcements. This paper deals with the overview of the reinforcements such as SiC, Al2O3 and graphene. Graphene has recently attracted many researcher due to its superior elastic modulus, high fatigue strength and low density. It is foreseen and predicted that graphene will replace and outperform carbon nanotubes (CNT) in near future.
Źródło:
Archives of Foundry Engineering; 2018, 18, 2; 5-10
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Processing of Porous NiTi Preforms for NiTi/Mg Composites
Autorzy:
Kucharczyk, A.
Naplocha, K.
Tomanik, M.
Powiązania:
https://bibliotekanauki.pl/articles/352563.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal matrix composite
magnesium
nitinol
SHS
squeeze casting
Opis:
NiTi alloys are successfully used in engineering and medical applications because of their properties, such as shape memory effect, superelasticity or mechanical strength. A composite with Mg matrix, due to its vibration damping properties, can be characterized by low weight and good vibration damping properties. In this study, a combination of two techniques was used for successful fabrication of Mg composite reinforced by NiTi alloy preform. The porous preforms synthesized by Self-propagating Hightemperature Synthesis (SHS) from elemental powders were subsequently infiltrated with Mg by squeeze casting. The effects were examined with scanning electron microscope with EDS detector, X-ray diffraction and microindentation. The inspection has shown well-connected matrix and reinforcement; no reaction at the interface and open porosities fully infiltrated by liquid Mg. Moreover, analysis of samples’ fracture has exhibited that crack propagates inside the Mg matrix and there is no detachment of reinforcement.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 747-752
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of Melt-Spun Al-20Si-5Fe Alloy and Boron Carbide (B4C) Composite Material
Autorzy:
Kilicaslan, M. F.
Uzun, A.
Karakose, E.
Powiązania:
https://bibliotekanauki.pl/articles/353146.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal matrix composite
rapid solidification
Al-Si alloys
Opis:
In this study, metal matrix composite materials containing melt-spun Al-20Si-5Fe alloys and boron carbide was produced by high energy ball milling and then hot pressing at 200 MPa pressure and 450°C. Mechanical and microstructural characterizations were performed by using an optical microscopy, X-Ray diffractometer, and dynamic microhardness tester. It was observed that boron carbide particles were homogenously distributed in the microstructure and values of microhardness and elastic modules were averagely 830 MPa and 42 GPa, respectively.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 2; 597-600
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical calculations of RVE dimensions for two-phase material
Autorzy:
Miedzińska, D.
Niezgoda, T.
Powiązania:
https://bibliotekanauki.pl/articles/242298.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
microstructure
two-phase material
metal-ceramic composite
RVE
Opis:
A representative volume element (RVE) is a statistical representation of typical material properties. It should contain enough information on the microstructure thereby be sufficiently smaller than the macroscopic structural dimensions. The paper deals with the numerical calculations of the dimensions of the RVE for a two-phase material microstructure. Two and three dimensional models are taken into consideration. The structure of the samples are developed on the base of randomization of elements belonging to one of the phases. The phases volume share is 50/50%. The following series of the models are analyzed: from 10 x 10 to 100 x 100 elements for 2D samples and from 10 x 10 x 10 to 100 x 100 x 100 elements for 3D samples. The element characteristic dimension is 10 jm. The elastic behavior of the base materials (magnesium and alumina) is taken into account. The quasi-static compression tests of the developed structures are carried out with the use of LS-DYNA computer code. The results are presented as the equivalent Young modulus values and compared to the calculations based on the rule of mixtures. The stabilization of the achieved results allows to assess the dimensions of the RVE for two-phase material with random distribution.
Źródło:
Journal of KONES; 2011, 18, 2; 303-310
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of SiC Particle Size Variation on the Tribological Properties of Cu-6Sn-SiC Composite
Autorzy:
Shankar, K. V.
Chandroth, A. M.
Ghosh, K. J. A.
Sudhin, C. B.
Pai, A. S.
Biju, A.
Sriram, K. R.
Powiązania:
https://bibliotekanauki.pl/articles/1840832.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CuSn
SiC
metal matrix composite
wear
tribological properties
Opis:
Copper have always been an important material and incorporation of elements into copper for property enhancement. Bronze is a relevant cuprous alloy which is important for many industrial and automotive applications like bearings and machineries. The present research is directed towards the fabrication and tribological analysis of regular bronze (Cu-6Sn) and metal matrix composites reinforced with varying particle sized SiC ceramic reinforcement (30, 35 and 40 μm). The developed specimens were subjected to wear analysis according to ASTM standards, to identify the tribological properties utilizing a pin on disk tribometer. It was noted that the wear rates of developed MMC’s phenomenally decremented with an increase in size of SiC particle reinforcement. Also, the test parameters were influential in altering the wear rates to notable margins. The standard scanning electron microscopy techniques aided in identifying the influence of adhesive wear on the specimen surface.
Źródło:
Archives of Foundry Engineering; 2020, 20, 4; 133-138
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Copper-Carbon Nanoforms Composites - Processing, Microstructure and Thermal Properties
Autorzy:
Pietrzak, K.
Gładki, A.
Frydman, K.
Wójcik-Grzybek, D.
Strojny-Nędza, A.
Wejrzanowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/350995.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal matrix composite
sintering
copper
graphene
thermal diffusivity
Opis:
The main current of publication is focused around the issues and problems associated with the formation of composite materials with Cu matrix and reinforcing phases in the various carbon nanoforms. The core of the research has been focused on thermal conductivity of these composites types. This parameter globally reflects the state of the structure, quality of raw materials and the technology used during the formation of composite materials. Vanishingly low affinity of copper for carbon, multilayered forms of graphene, the existence of critical values of graphene volume in the composite are not conducive to the classic procedures of composites designing. As a result, the expected, significant increase in thermal conductivity of composites is not greater than for pure copper matrix. Present paper especially includes: (i) data of obtaining procedure of copper/graphene mixtures, (ii) data of sintering process, (iii) the results of structure investigations and of thermal properties. Structural analysis revealed the homogenous distribution of graphene in copper matrix, the thermal analysis indicate the existence of carbon phase critical concentration, where improvement of thermal diffusivity to pure copper can occur.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1307-1310
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling coupled electric field and motion of beam of ionic polymer-metal composite
Autorzy:
Dominik, I.
Kaszuba, F.
Kwaśniewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/386510.pdf
Data publikacji:
2014
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
ionic polymer-metal composite
mathematical model
smart materials
model matematyczny
inteligentne materiały
kompozyt
Opis:
In this paper, a mathematical model of electromechanical transduction of Ionic Polymer-Metal Composites is presented. The aim of the research was to create a physics-based, geometrically scalable model to use in control systems. The relation between actuating voltage and the tip displacement was described with a transfer function. The model is derived from the basic physical properties of re-searched materials. To calculate the final transfer function, two impedance models are considered – with and without neglecting the re-sistance of the metal electrodes. In this paper, the model with non-zero electrode resistance is calculated. Later, the model is simplified (taking the physical properties into account) and the numerical values based on the parameters of the samples are calculated. The simpli-fications allow the model to predict the response to low-frequency sine wave actuation. The frequency-domain characteristics of the sam-ples were created experimentally and compared to the model. The results have proven the accuracy of the model.
Źródło:
Acta Mechanica et Automatica; 2014, 8, 1; 38-43
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Boron and Tungsten Carbides on the Properties of TiC-Reinforced Tool Steel Matrix Composite Produced by Powder Metallurgy
Autorzy:
Slokar Benić, Ljerka
Šubić, Jadranko
Erman, Žiga
Powiązania:
https://bibliotekanauki.pl/articles/355244.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal matrix composite
steel/TiC composite
powder metallurgy
properties
microstructure
Opis:
The influence of boron carbide and tungsten carbide on the apparent porosity, density, coercive force, hardness and micro-structure of metal matrix composite of the Ferro-TiC type, is presented in this paper. The samples of investigated steel/titanium carbide composite were produced by powder metallurgy process, i.e. by powders mixing and compacting followed by sintering in the vacuum furnace. According to the results, steel/titanium carbide composite materials with addition up to 11.9 vol.% of boron carbide are interesting to detailed investigation as well as materials having more than 17.2 vol.% of tungsten carbide because these compositions show significant changes in hardness and coercive force values.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 2; 539-547
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
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