Temat: modulus young - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Mechanical Properties of Polypropylene Composites with Different Reinforced Natural Fibers – A Comparative Study
Autorzy:: Simamora, Pintor
Simanjuntak, Josua
Sinulingga, Karya
Laksono, Andromeda Dwi
Powiązania:: https://bibliotekanauki.pl/articles/27323811.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: polypropylene
natural fibre
tensile strength
modulus young
flexural strength
Opis:: Developing environmentally friendly and recyclable natural fiber-reinforced polymer composites has recently attracted researchers’ attention and interest. Herein, a comparative study was conducted to compare the mechanical properties of polypropylene (PP) composites with different natural fiber reinforcement, including palm fiber (Arenga pinnata), rice straw (Oryza sativa), coconut husk (Cocos mucifera), old world forked fern leaves (dicranopteris linearis), and snake plant (Sansevieria trifasciata). This study aimed to compare the influence of the five natural fiber materials on the tensile strength and flexural strength of PP composites. The natural fibers were chemically treated with a 5% NaOH solution for 2.5 hours. In the preparation of composites, polypropylene as the matrix is heated to 300 °C and mixed randomly with natural fibers. The test results indicate that the composite with the highest tensile strength (38% higher than the lowest) and flexural strength (102% higher than the lowest) is obtained using the PP composite with reinforced rice straw fiber. In contrast, the PP composites with palm fiber have the lowest tensile strength (72% from the highest tensile strength) and the lowest flexural strength (UFSmin) (62% from the highest flexural strength) corresponds to the PP composites with coconut fiber. This study revealed that the flexural strength of all composite samples was greater than that of pure PP.
Źródło:: Journal of Ecological Engineering; 2023, 24, 7; 311--317
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Optimization of process parameters for enhanced mechanical properties of polypropylene ternary nanocomposites
Autorzy:: Ogunleye, O O
Salawudeen, T O
Suleyman, M A
Faridah, Y
Powiązania:: https://bibliotekanauki.pl/articles/102420.pdf
Data publikacji:: 2015
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: MWCNT
PPTN
tensile strength
Young's modulus
Opis:: Preparation of Polypropylene ternary nanocomposites (PPTN) was accomplished by blending multiwall carbon nanotube (MWCNT) in polypropylene/clay binary system using a melt intercalation method. The effects of MWCNT loadings (A), melting temperature (B) and mixing speed (C) were investigated and optimized using central composite design. The analysis of the fitted cubic model clearly indicated that A and B were the main factors influencing the tensile properties at a fixed value of C. However, the analysis of variance showed that the interactions between the process parameters, such as; AB, AC, AB2, A2B and ABC, were highly significant on both tensile strength and Young’s modulus enhancement, while no interaction is significant in all models considered for elongation. The established optimal conditions gave 0.17%, 165 °C, and 120 rpm for A, B and C, respectively. These conditions yielded a percentage increase of 57 and 63% for tensile strength and Young’s modulus respectively compared to the virgin Polypropylene used.
Źródło:: Advances in Science and Technology. Research Journal; 2015, 9, 25; 27-33
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Metody wyznaczania wartości statycznego modułu Younga materiałów elastomerowych
Methods for estimation of static Youngs modulus for elastomeric materials
Autorzy:: Bednarz, J.
Bieleń, P.
Powiązania:: https://bibliotekanauki.pl/articles/315639.pdf
Data publikacji:: 2017
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: elastomer
moduł Younga
wibroizolacja
Young modulus
vibroisolation
Opis:: Prawidłowy dobór materiałów elastomerowych mogących mieć zastosowanie w systemach wibroizolacji wymaga wyznaczenia wartości parametrów fizyko-mechanicznych materiału. Podstawową wyznaczaną wielkością jest statyczny moduł Younga będący miarą sprężystości materiału elastomerowego. W artykule przedstawiono porównanie metod wyznaczania statycznego modułu Younga dla próbek materiału elastomerowego. Przedstawiono metodykę badań oraz ich wyniki.
Proper selection of elastomeric materials that may be used in vibration isolation systems requires the determination of the physico-mechanical parameters of the material. The basic determinant is the static Young's modulus, which is the measure the elasticity of the elastomeric material. The article presents a comparison of methods for determining static Young's modulus for samples of elastomeric material. The research methodology and results are presented.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 12; 723-729, CD
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Application of finite element method for analysis of nanostructures
Autorzy:: Bocko, J.
Lengvarský, P.
Powiązania:: https://bibliotekanauki.pl/articles/387168.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: beam elements
spring element
young's modulus
Poisson's ratio
Opis:: The paper deals with application of the finite element method in modelling and simulation of nanostructures. The finite element model is based on beam elements with stiffness properties gained from the quantum mechanics and nonlinear spring elements with forcedisplacement relation are gained from Morse potential. Several basic mechanical properties of structures are computed by homogenization of nanostructure, e.g. Young's modulus, Poisson's ratio. The problems connecting with geometrical parameters of nanostructures are considered and their influences to resulting homogenized quantities are mentioned.
Źródło:: Acta Mechanica et Automatica; 2017, 11, 2; 116-120
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: FEM modelling of the static behaviour of reinforced concrete beams considering the nonlinear behaviour of the concrete
Autorzy:: Pazdan, Maciej
Powiązania:: https://bibliotekanauki.pl/articles/1845144.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: concrete
reinforced concrete
deflection
numerical analysis
Young's modulus
Opis:: This paper presents a finite element (FE) method of modelling reinforced concrete beams. The proposed model takes into account the phenomena characteristic of reinforced concrete structures, such as the interaction between two materials (concrete and steel), the cracking caused by mechanical loads and the variation of the Young's modulus under increasing load. A relevant numerical FE analysis was carried out in the ABAQUS system using the concrete damaged plasticity (CDP) model. The character of Young's modulus variation due to increasing stress intensity level was taken from the author’s own research. The results of the FE calculations were compared with the results yielded by the author's numerical bar model.
Źródło:: Studia Geotechnica et Mechanica; 2021, 43, 3; 206-223
0137-6365
2083-831X
Pojawia się w:: Studia Geotechnica et Mechanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Thermodynamic and mechanical characterisation of kaolin clay
Autorzy:: Hammouda, I.
Mihoubi, D.
Powiązania:: https://bibliotekanauki.pl/articles/779615.pdf
Data publikacji:: 2014
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: drying
desorption isotherms
volume shrinkage
Young's modulus
relaxation
Opis:: This study deals with experimental thermodynamic and rheological characterization of kaolin. Water sorption isotherms of kaolin were determined for three temperatures (30, 50 and 70°C). Desorption isotherms were fitted by using five models (GAB, BET, Henderson modified, Adam and Shove, Peleg) among the most used ones in literature. The GAB model was found to be the most suitable for describing the relationship between equilibrium moisture content and water activity for the whole range of temperature (30-70°C) and relative humidity(0-100%). Desorption enthalpy and entropy were determined. The desorption enthalpy decreases with increasing moisture content. The density and the shrinkage of the material and the Young’s modulus variations as a function of moisture content were determined experimentally. The Young modulus varies between 0.1 MPa and 14 MPa. The viscoelastic parameters of kaolin were also determined by using a series of Prony.
Źródło:: Polish Journal of Chemical Technology; 2014, 16, 1; 28-35
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Geomechanical properties of shale rock from Baltic Basin in Poland area
Autorzy:: Laura, A.
Powiązania:: https://bibliotekanauki.pl/articles/1203995.pdf
Data publikacji:: 2015
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: shale gas
geomechanical properties
mineralogy
Poisson's ratio
Young modulus
Opis:: The successful development of shale gas requires a fundamental understanding of shales and that can be challenging because these rocks vary significantly. For recoverable shale gas resources assessment a broad range of geological, geochemical, geophysical and geomechanical data is required. Information about the variable lithologies, mineralogies, and kerogen content is vital to locate favorable intervals for gas production. Knowledge of the in-situ stresses and porosity of these intervals is essential for developing hydraulic fracturing strategies to recover the gas in place. Geomechanical properties of shales are important in terms of determination of the likelihood of fractures initiating and propagating in shale materials. Geomechanical properties of rock include: Poisson's Ratio, Total Minimum Horizontal Stress, Bulk, Young and Shear Modulus. These properties play significant role in developing shale assets. Having access to geomechanical data can assist engineers and geoscientists during geomechanical modeling, hydraulic fracture treatment design and in some cases during reservoir modeling in shale gas fields. This paper is intended to give characterization of geomechanical properties of shale rock. It then refers to a case study of Baltic Basin of shale gas in Poland, for discussing it geological condition and rock properties.
Źródło:: AGH Drilling, Oil, Gas; 2015, 32, 2; 369-380
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Metody wyznaczania modułu Younga dla materiałów elastomerowych
Methods for estimation of youngs modulus for elastomeric materials
Autorzy:: Bednarz, J.
Bieleń, P.
Powiązania:: https://bibliotekanauki.pl/articles/311700.pdf
Data publikacji:: 2017
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: materiały elastomerowe
moduł Younga
wibroizolacja
elastomeric materials
Young's modulus
vibroisolation
Opis:: Prawidłowy dobór materiałów elastomerowych mogących mieć zastosowanie w systemach wibroizolacji wymaga wyznaczenia wartości parametrów fizyko-mechanicznych materiału. Podstawową wyznaczaną wielkością jest moduł Younga będący miarą sprężystości materiału elastomerowego. W artykule przedstawiono porównanie metod wyznaczania modułu Younga dla próbek materiału elastomerowego. Przedstawiono metodykę badań oraz ich wyniki.
Proper selection of elastomeric materials that may be used in vibration isolation systems requires the determination of the physico-mechanical parameters of the material. The basic determinant is the Young's modulus, which is the measure the elasticity of the elastomeric material. The article presents a comparison of methods for determining Young's modulus for samples of elastomeric material. The research methodology and results are presented.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 6; 513-517, CD
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Mechanical properties of Si₃N₄ – graphene composites sintered by SPS method
Autorzy:: Klimczyk, P.
Jaworska, L.
Cygan, S.
Morgiel, J.
Major, Ł.
Olszyna, A.
Powiązania:: https://bibliotekanauki.pl/articles/391862.pdf
Data publikacji:: 2017
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
Tematy:: silicon nitride
graphene
Young's modulus
hardness
friction coefficient
wear rate
Opis:: Silicon nitride powder with a small addition of magnesium oxide and yttria stabilized tetragonal zirconia fine particles was used as a starting material. Multilayer graphene nanoplatelets were used as filler for silicon nitride based composites. Graphene content in the mixtures was 0‒2 wt. %. The composites were obtained by the Spark Plasma Sintering method at 1650°C under 35 MPa of uniaxial pressure. Separation of the agglomerated graphene platelets in the matrix was observed for these materials. Insufficient dispersity of graphene slightly decreased the mechanical properties of Si₃N₄ ceramics. The SEM and TEM microstructural analysis of sintered materials show that the applied pressure during the sintering process leads to the orientation of the graphene phase and in consequence causes anisotropy of properties. The differences of friction coefficients were examined with the Ball-on-Disc method for the two directions (parallel and perpendicular to the pressing axis). Also the specific wear rate of the ball for the direction parallel to pressing axis differ significantly in comparison to the wear for the direction perpendicular to the pressing direction.
Źródło:: Prace Instytutu Odlewnictwa; 2017, 57, 4; 235-239
1899-2439
Pojawia się w:: Prace Instytutu Odlewnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Impact of thermal fatigue on young’s modulus of epoxy adhesives
Autorzy:: Kłonica, M.
Powiązania:: https://bibliotekanauki.pl/articles/102676.pdf
Data publikacji:: 2015
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: Young's modulus
epoxy adhesive
Hysol 9466
Hysol 3421
thermal shock
Opis:: The following paper presents a comparative analysis of two epoxy-based adhesives: Hysol 9466 and Hysol 3421, prior to and after thermal shock testing. The tests focused on determining Young’s modulus. Epoxy-based materials are among the most widespread adhesive materials used as universal structural adhesives. The prepared epoxy samples (Hysol 9466 and Hysol 3421) were subjected to thermal shock cycling tests, according to a specified programme, in a thermal shock testing chamber, at a temperature range –40 °C to +60 °C and in the number of 200 cycles. Conclusions from the tests are presented at the final stage of the paper.
Źródło:: Advances in Science and Technology. Research Journal; 2015, 9, 28; 103-106
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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