Temat: mechanical behavior - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Crystallization behavior and microstructure of bio glass-ceramic system
Autorzy:: Mehdikhani, B.
Borhani, G. H.
Powiązania:: https://bibliotekanauki.pl/articles/412654.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: bio glass-ceramic
alumina
crystallization
mechanical behavior
Opis:: The effects of Al2O3 on the crystallization behavior of glass compositions in the Na2O-CaO-SiO2 system were investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Effect of Al2O3 content on the mechanical, density, phase formation and microstructures of Na2O-CaO–P2O5–Al2O3-SiO2 glass ceramics were studied. Thermal parameters of each glass were studied by DTA. The density of the glass ceramic samples was measured by Archimedes’ method. It was found that the glass–ceramic containing 2.0 molar percent Al2O3 had desirable sintering behavior and reached to an acceptable density. Phase investigation and micro structural study were performed by XRD and SEM, respectively.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 14; 58-68
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Mechanical Behavior of Aluminum Phosphide under Pressure
Autorzy:: Daoud, S.
Powiązania:: https://bibliotekanauki.pl/articles/1029815.pdf
Data publikacji:: 2018-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: AlP semiconductor
equation of state
mechanical behavior
piezoelectric coefficient
Opis:: With the help of structural parameters and elastic constants obtained previously in our work (S. Daoud, N. Boiud, N. Lebga, J. Optoelectron. Adv. Mater. 16, 207 (2014)), different empirical formulae were successfully used to investigate: equation of state, the isotropic shear modulus, the Young modulus, the Cauchy ratio, the Born ratio, the Poisson ratio, the Pugh ratio, the Kleinman parameter, and the converse piezoelectric coefficient of the aggregate AlP material with cubic zinc-blende structure under pressure up to experimental pressure of phase transition (9.5 GPa). In addition, the Debye temperature at equilibrium volume was predicted, the result obtained is in excellent agreement compared to the experimental ones, the deviation is less than 1.4%.
Źródło:: Acta Physica Polonica A; 2018, 133, 1; 23-27
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Investigating the Effect of Photo-Oxidative Degradation on the Ageing Resistance of the Car Mudflaps Manufactured with Post-Production High-Density Polyethylene Wastes
Autorzy:: Czarnecka-Komorowska, Dorota
Swain, Chandra
Kopeć, Bogdan
Borowski, Jacek
Garbacz, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/2201788.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: recycling
crystallinity
mechanical behavior
ageing process
carbonyl index
mudflap
polyethylene
HDPE
Opis:: The paper presents the results of the ageing resistance of automotive mudflaps made of recycled polyethylene blends. The mudflaps were manufactured by a plastic sheet extrusion-calendaring process in Novotech Kostrzyn nad Odrą company. The changes of the mechanical properties in the tensile test and impact toughness test as well as in Shore hardness due to the accelerated aging process were characterized, taking into account the aging sensitivity coefficient (KI), and changes in the structure within the wavenumber range 4000-400 cm-1, taking into account the CI coefficient. The results showed a higher melting point and crystallinity for the recycled HDPE blends during photo-oxidative degradation. Moreover, the results presented decreased tensile strength and ductility, due to macromolecular chain scission caused by oxidation. It was found that the blends of HDPE based on recycled materials are more sensitive to the aging process than virgin HDPE. Finally, it can be concluded that the sensitivity to ageing blends increases with the increase of recycled HDPE content in the HDPE matrix.
Źródło:: Advances in Science and Technology. Research Journal; 2022, 16, 4; 38--47
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Nano-scale hardness and elastic modulus of WC-Co composites and their relationship to the tools life during particleboard milling
Autorzy:: Wilkowski, Jacek
Barlak, Marek
Wachowicz, Joanna
Bottger, Roman
Werner, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/2206683.pdf
Data publikacji:: 2019
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: WC-Co composites
hardness
elastic modulus
nano-scale mechanical behavior
tool life
particleboard
milling
Opis:: Nano-scale hardness and elastic modulus of WC-Co composites and their relationship to the tool life during particleboards milling. The paper summarizes the results of the technique of hardness and elastic modulus determination using a load and displacement sensing indentation experiments. During the tests these properties were measured in nano-scale for different types of WC-Co composites using the Anton Paar TriTec Ultra Nano Hardness Tester (UNHT). In addition, durability examination of WC-Co tools during milling of particleboard was carried out. In the final stage, the correlation of the studied properties with the lifetime of tools was analyzed. The studies have revealed a relationship between micro-hardness and the total cutting length of the WC-Co tools.
Twardość i moduł sprężystość kompozytów WC-Co w nano-skali i ich związek z trwałością narzędzi podczas frezowania płyt wiórowych. W artykule przedstawiono zastosowanie metody określania twardości i modułu sprężystości za pomocą techniki wgłębnika z rejestracją obciążenia i przemieszczenia. Mierzono ww. właściwości w nanoskali dla różnych rodzajów kompozytów WC-Co przy użyciu twardościomierza Anton Paar TriTec (UNHT). Ponadto przeprowadzono badania trwałości narzędzi WC-Co podczas frezowania płyty wiórowej. W końcowym etapie przeanalizowano korelację badanych właściwości z okresem trwałości ostrzy. Badania wykazały korelacyjny związek między twardością w nano-skali a całkowitą drogą skrawania ostrzy WC-Co.
Źródło:: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2019, 106; 62--66
1898-5912
Pojawia się w:: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Approximate mechanical behavior analysis of a thick-wall metallic liner reinforced with composites, submitted to internal pressure
Autorzy:: Vargas-Rojas, E.
Palacios-Montúfar, C.
Hernández-Moreno, H.
González-Velázquez, J. L.
Powiązania:: https://bibliotekanauki.pl/articles/200013.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: mechanical behavior analysis
thick-wall metallic liner
composites
internal pressure
analiza zachowania
ściana
kompozyty
ciśnienie wewnętrzne
Opis:: This study aims to simulate and to analyze the elastic and the damage behavior of a reinforced metallic liner (RML) by means of a computational tool, in order to aid in the design of high specific-stiffness and -strength barrels for heavy-duty hydraulic applications. Case studies for the program validation are undertaken using an AISI 1026 or St52.3 steel tubing reinforced with a polymeric composite of glass fiber and epoxy resin, wound in a hoop pattern. The mechanical behavior of the RML under internal pressure with no-end effects is predicted by means of strain measurements at the outermost layer. The mathematical model is based on the Classical Lamination Theory (CLT) improved with kinematic relationships that allow to introduce curvature effects. Numerical results based on experimental measurements show that the reinforcement is effective, allowing to considerably augment the maximum bearable pressure with respect to a non-reinforced metallic liner (nRML), without important weight or cost increase.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 1; 219-233
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Microstructure and Mechanical Behavior of Mg-0.5Si-xSn Alloys
Autorzy:: Fu, X.
Yang, Y.
Ma, Q. Y.
Peng, X.
Xu, T.
Powiązania:: https://bibliotekanauki.pl/articles/379670.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: low silicon magnesium alloy
eutectic Mg2Si
microstructure behavior
mechanical behavior
stop magnezu
stop Mg2Si
zachowanie mechaniczne
Opis:: Mg-0.5Si-xSn (x=0.95, 2.9, 5.02wt.%) alloys were cast and extruded at 593K (320 ºC) with an extrusion ratio of 25. The microstructure and mechanical properties of as-cast and extruded test alloys were investigated by OM, SEM, XRD and tensile tests. The experimental results indicate that the microstructure of the Mg-0.5Si-xSn alloys consists of primary α-Mg dendrites and an interdendritic eutectic containing α-Mg, Mg₂Si and Mg₂Sn. There is no coarse primary Mg₂Si phase in the test alloys due to low Si content. With the increase in the Sn content, the Mg₂Si phase was refined. The shape of Mg₂Si phase was changed from branch to short bar, and the size of them were reduced. The ultimate tensile strength and yield strength of Mg-0.52Si-2.9Sn alloy at the temperature of 473K (200 ºC) reach 133MPa and 112MPa respectively. Refined eutectic Mg₂Si phase and dispersed Mg₂Sn phase with good elevated temperature stability are beneficial to improve the elevated temperature performance of the alloys. However, with the excess addition of Sn, large block-like Mg₂Sn appears around the grain boundary leading to lower mechanical properties.
Źródło:: Archives of Foundry Engineering; 2017, 17, 4; 179-184
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Effect of High-Frequency Electric Resistance Welding (HF-ERW) Parameters on Metallurgical Transformations and Tensile Properties of API X52 Microalloy Steel Welding Joint
Autorzy:: Sabzi, M.
Kianpour-Barjoie, A.
Ghobeiti-Hasab, M.
Dezfuli, S. M.
Powiązania:: https://bibliotekanauki.pl/articles/353144.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: High Frequency Electric Resistance Welding
HF-ERW
frequency
compression force
Vee angle
mechanical behavior
API X52 microalloyed steel
Opis:: This study investigates the effects of frequency, compression force and Vee angle parameters of High-Frequency Electric Resistance Welding (HF-ERW) process on mechanical properties of API X52 microalloy steel welding joint. Therefore, API X52 microalloy steel sheets having thickness of 8 mm was provided to manufacture pipes with the diameter of 16”. with direct weld seams using the HF-ERW method. During the manufacturing process, frequency values of 150, 200 and 250 kHz, compression forces of 2, 4 and 6 mark and Vee angles of 3°, 5°, and 7° were adopted. After changing the welding parameters, from the welded pipes, tensile and Charpy impact test samples prepared to macroscopically evaluate the weld metal flow and examine the effects of these parameters on mechanical properties of the welded joints. According to the results, it was concluded that frequency of 150 kHz, the compression force of 4 mark and Vee angle of 5° yields best mechanical properties in the HF-ERW joint of API X52 microalloy steel.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 4; 1693-1699
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Vibration Control Devices for Building Structures and Installation Approach: a review
Autorzy:: Sarwar, Waseem
Sarwar, Rehan
Powiązania:: https://bibliotekanauki.pl/articles/396232.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: building structures
vibration
control devices
seismic hazard
mechanical behavior
installation approach
design considerations
konstrukcje budowlane
drgania
urządzenia kontrolne
zagrożenia sejsmiczne
Opis:: Retrofit and structural design with vibration control devices have been proven repeatedly to be feasible seismic hazard mitigation approach. To control the structural response; supplemental energy dissipation devices have been most commonly used for energy absorption. The passive control system has been successfully incorporated in mid to high rise buildings as an appropriate energy absorbing system to suppress seismic and wind-induced excitation. The considerable theses that are highlighted include vibration control devices, the dynamic behavior of devices; energy dissipation mechanism, devices installation approach and building guidelines for structural analysis and design employing vibration control devices also, design concern that is specific to building with vibration control devices. The following four types of supplemental damping devices have been investigated in this review: metallic devices, friction devices, viscous fluid devices, and viscoelastic devices. Although numerous devices installation techniques available, more precisely, devices installation approaches have been reviewed in this paper, including Analysis and Redesign approach (Lavan A/R), standard placement approach, simplified sequential search algorithm, and Takewaki approach.
Źródło:: Civil and Environmental Engineering Reports; 2019, 29, 2; 74-100
2080-5187
2450-8594
Pojawia się w:: Civil and Environmental Engineering Reports
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: The influence of strain rate on microstructure and mechanical behavior of P/M feal
Wpływ prędkości odkształcenia na strukturę i charakter plastycznego płynięcia stopu FeAl otrzymanego metodą metalurgii proszków
Autorzy:: Śleboda, T.
Powiązania:: https://bibliotekanauki.pl/articles/950798.pdf
Data publikacji:: 2008
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: stopy Fe-Al
struktura
odkształcenie plastyczne
prędkość odkształcenia
metalurgia proszków
FeAl alloys
microstructural evolution
mechanical behavior
strain rate
powder metallurgy
Opis:: As part of a broader study of the thermomechanical processing of P/M FeAl alloys, this research is focused on the influence of processing strain rate on the microstructural evolution and mechanical behavior of the processed materials. For the purposes of this study, water atomized FeAl powder was consolidated by hot pressing resulting in fully dense products. The consolidated P/M samples were thermomechanically processed in compression at 800 and 900oC at strain rates of 0.1 s-1 and 10 s-1, to a true strain of 1. The influence of thermomechanical processing parameters on the material flow and microstructural development of investigated alloy was analyzed. Considerable strain rate sensitivity of investigated alloy was observed, specially with reference to microstructural development.
W niniejszej pracy przedstawiono wybrane wyniki badań wpływu prędkości odkształcenia na rozwój mikrostruktury oraz charakter odkształcenia plastycznego stopu z grupy FeAl. W badaniach zastosowano rozpylany wodą proszek stopu. W pełni zagęszczone poprzez prasowanie na gorąco próbki z proszków poddano próbie ściskania w temperaturach 800°C oraz 900°C przy prędkościach odkształcenia równych 0.1 s(-1) oraz 10 s(-1), do wartości odkształcenia rzeczywistego równej 1. W materiałach odkształconych w temperaturze 800°C rozdrobnienie mikrostruktury nastąpiło tylko przy większej prędkości odkształcenia (10 s(-1) ), natomiast w temperaturze 900°C materiał uległ rekrystalizacji niezależnie od prędkości odkształcenia. Badania wykazały stosunkowo dużą czułość stopu na prędkość odkształcenia, szczególnie w odniesieniu do zmian strukturalnych związanych z procesami rekrystalizacji.
Źródło:: Metallurgy and Foundry Engineering; 2008, 34, 2; 133-138
1230-2325
2300-8377
Pojawia się w:: Metallurgy and Foundry Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Mechanical properties of CFST short columns with different void ratios
Autorzy:: Song, Junxi
Han, Zhuowei
Wang, Dawei
Lu, Xiaorui
Powiązania:: https://bibliotekanauki.pl/articles/27312159.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: rura stalowa wypełniona betonem
ściskanie mimośrodowe
analiza elementów skończonych
zachowanie mechaniczne
stosunek
pustka powietrzna
concrete-filled steel tube
eccentric compression
finite element analysis
mechanical behavior
void ratio
Opis:: In order to study the mechanical behavior of concrete-filled steel tube(CFST) short column with different void ratios under a certain eccentricity. A fiber model of concrete-filled steel tube section with different void heights was established. Compared with existing model test data, the axial force and flexural moment strength models of concrete-filled steel tube columns with different void ratios were established. The results show that, in the case of different void ratios, the cross-section strength envelope shows an overall contraction tendency with the increase of void ratio, and each line is basically parallel. A model for calculating the coefficient of axial load degradation was established. The Han’s flexural moment strength model of the flexural component was revised, and the strength model of concrete-filled steel tube column under eccentric compression considering void ratio was established, which provides a theoretical basis and method for the safety assessment during the operation of concrete-filled steel tube arch bridges.
Źródło:: Archives of Civil Engineering; 2023, 69, 3; 587--596
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "mechanical behavior" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język