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 "strength parameters" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 20
Tytuł:
Geomechanical modelling of Paleozoic Shale Gas Formation: a case study from the Baltic Basin, northern Poland
Autorzy:
Słota-Valim, M.
Sowiżdżał, K.
Jędrzejowska-Tyczkowska, H.
Powiązania:
https://bibliotekanauki.pl/articles/955171.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Mechanical Earth Model
geomechanics
elastic properties
strength parameters
principal stresses
Opis:
The article presents the importance and position of geomechanical modelling workflow in reservoir characterization studies dedicated to unconventional shale reservoirs. We show the results of 3D geomechanical modelling carried out in an onshore area within the Baltic Basin, northern Poland, where the Silurian and Ordovician shale formations are the exploration targets. The fundamental elements of the methodology, processes, and available datasets used in the modelling are discussed. The petrophysical, elastic, and mechanic properties of the rock were applied in the modelling process, along with the principal stresses and pore pressure in the geological formation. Moreover, the main calculation methods and data requirements for the Mechanical Earth Model construction are discussed. A comprehensive 3D geomechanical model was constructed, providing important information to engineers and decision makers which allows them to optimize well placement, the direction of the horizontal section of the borehole and the parameters of hydraulic fracturing treatment. The model can identify zones of higher potential within the area of interest in terms of efficient stimulation treatment design.
Źródło:
Geology, Geophysics and Environment; 2017, 43, 3; 249-269
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of soil parameters changes on the bearing capacity of soil
Autorzy:
Harabinová, S.
Kotrasová, K.
Powiązania:
https://bibliotekanauki.pl/articles/131566.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Komisja Inżynierii Budowlanej PAN Oddział w Katowicach
Tematy:
shear strength parameters
bearing capacity
foundation design
parametry wytrzymałości na ścinanie
nośność
projekt fundamentu
Opis:
The strength of soil is a key parameter in designing foundations and other earth structures. In shallow foundation design, the capacity of the foundation to support footing load is dependent on the soil’s bearing capacity which is a function of its strength parameters. According to [4], bearing capacity is the maximum pressure that the soil can support at foundation level without failure. Proper interpretation of specific shear strength parameters of clay and the application of this case to bearing capacity problems was presented and reviewed in this paper. The influence of the shear strength parameters of subsoil on its bearing capacity are very important, especially, when changing the angle of internal friction. The results of calculations for low plastic clay subsoil, shown in the work, illustrate exemplary how a level of its bearing capacity can be determined with significant errors when using incorrect shear parameters of soil.
Źródło:
Roczniki Inżynierii Budowlanej; 2017, 17; 85-90
1505-8425
Pojawia się w:
Roczniki Inżynierii Budowlanej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tunnel support design by comparison of empirical and finite element analysis of the Nahakki Tunnel in Mohmand Agency, Pakistan
Autorzy:
Riaz, A.
Jamil, S. M.
Asif, M.
Akhtar, K.
Powiązania:
https://bibliotekanauki.pl/articles/178620.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
rock mass strength parameters
rock mass classification
FEM analysis
Phase2
tunnel support design
Opis:
The paper analyses the geological conditions of study area, rock mass strength parameters with suitable support structure propositions for the under construction Nahakki tunnel in Mohmand Agency. Geology of study area varies from mica schist to graphitic marble/phyllite to schist. The tunnel ground is classified and divided by the empisical classification systems like Rock mass rating (RMR), Q system (Q), and Geological strength index (GSI). Tunnel support measures are selected based on RMR and Q classification systems. Computer based finite element analysis (FEM) has given yet another dimension to design approach. FEM software Phase2 version 7.017 is used to calculate and compare deformations and stress concentrations around the tunnel, analyze interaction of support systems with excavated rock masses and verify and check the validity of empirically determined excavation and support systems.
Źródło:
Studia Geotechnica et Mechanica; 2016, 38, 1; 75-84
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations of Properties of Soil-Aggregate Mixtures
Autorzy:
Skrzypczak, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/27314805.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
soil-aggregate mixture
strength parameters
grain-size distribution
optimal moisture
mieszanka glebowo-kruszywowa
parametry wytrzymałościowe
rozkład wielkości ziarna
wilgotność optymalna
Opis:
The subject of this paper is the evaluation of the use of waste material, which is the native soil. On the example of the base ground taken from the village of Lipie (Podkarpackie voivodeship), soil-aggregate mixtures were prepared with a different degree of addition of natural aggregate. The study analysed the quantitative and qualitative parameters of the prepared mixtures and assessed their physical and mechanical properties to determine their suitability for the construction of infrastructural facilities. It should be noted that most specifications recommend the use of primarily aggregate mixtures. The paper presents the results of a study analysing the effect of aggregate admixture to the native soil on selected physical and strength properties of the mixtures developed. The obtained results confirmed the validity of research on the use of soil-aggregate mixtures for construction purposes.
Źródło:
Civil and Environmental Engineering Reports; 2022, 32, 3; 116--132
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stability conditions of the Vistula Valley attained by a multivariate approach – a case study from the Warsaw Southern Ring Road
Autorzy:
Kaczmarek, Ł.
Dobak, P.
Powiązania:
https://bibliotekanauki.pl/articles/94305.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
slope stability
engineering geology modelling
shear strength parameters
glacial tills
Central Poland
stabilność skarpy
inżynierskie modelowanie geologiczne
parametry
wytrzymałość na ścinanie
gliny lodowcowe
Polska Centralna
Opis:
Localised landslide activity has been observed in the area of the plateau slope analysed, in the vicinity of the planned Warsaw Southern Ring Road. Using calculation models quantitative and qualitative evaluations of the impact of natural and anthropogenic load factors on slope stability (and hence, safety) are made. The present paper defines six stages of slope stability analysis, leading to an indication of optimum slope design in relation to the development planned. The proposed procedure produces a ranking of factors that affect slope stability. In the engineering geological conditions under consideration, the greatest factors impacting degradation and failure of slope stability are changes in soil strength due to local, periodic yielding and the presence of dynamic loads generated by intensification of road traffic. Calculation models were used to assess the impact of destabilisation factors and to obtain mutual equivalence with 3D-visualisation relations. Based on this methodology, various scenarios dedicated to specific engineering geological conditions can be developed and rapid stability evaluations of changing slope loads can be performed.
Źródło:
Geologos; 2015, 21, 4; 249-260
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geotechnical parameters of alluvial soils from in-situ tests
Autorzy:
Młynarek, Z.
Stefaniak, G.
Wierzbicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/241228.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
silty soils parameters
strength
deformation
CPTU
SDMT
Opis:
The article concentrates on the identification of geotechnical parameters of alluvial soil represented by silts found near Poznań and Elbląg. Strength and deformation parameters of the subsoil tested were identified by the CPTU (static penetration) and SDMT (dilatometric) methods, as well as by the vane test (VT). Geotechnical parameters of the subsoil were analysed with a view to using the soil as an earth construction material and as a foundation for buildings constructed on the grounds tested. The article includes an analysis of the overconsolidation process of the soil tested and a formula for the identification of the overconsolidation ratio OCR. Equation 9 reflects the relation between the undrained shear strength and plasticity of the silts analyzed and the OCR value. The analysis resulted in the determination of the Nkt coefficient, which might be used to identify the undrained shear strength of both sediments tested. On the basis of a detailed analysis of changes in terms of the constrained oedometric modulus M0, the relations between the said modulus, the liquidity index and the OCR value were identified. Mayne’s formula (1995) was used to determine the M0 modulus from the CPTU test. The usefullness of the sediments found near Poznań as an earth construction material was analysed after their structure had been destroyed and compacted with a Proctor apparatus. In cases of samples characterised by different water content and soil particle density, the analysis of changes in terms of cohesion and the internal friction angle proved that these parameters are influenced by the soil phase composition (Fig. 18 and 19). On the basis of the tests, it was concluded that the most desirable shear strength parameters are achieved when the silt is compacted below the optimum water content.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2012, 59, 1-2; 63-81
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ayous wood : main uses and selected physical and mechanical properties of an increasingly interesting material originating from cameroon
Autorzy:
Gennari, Emiliano
Picchio, Rodolfo
Lo Monaco, Angela
Powiązania:
https://bibliotekanauki.pl/articles/2201361.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
density
shrinkage
colourimetric parameters
compression strength
static bending strength
Brinell hardness
Opis:
Triplochiton scleroxylon K. Schum, commonly named ayous in Cameroon, is a tree typical of secondary forests in subtropical areas mainly below 500 msl, characterized by an uneven distribution of annual rainfall and the presence of disturbance. This species is widely used in the origin area, and the interest of European markets for ayous wood has steadily increased in the last decades. Despite the interest, only a few studies explored the characterization of this wood for its Cameroonian provenience. This study was carried out to provide a general overview of the available information and to determine some selected physical and mechanical properties of ayous wood coming from the department of Boumba et Ngoko in South-east Cameroon. Physical and mechanical properties and colourimetric parameters of ayous wood were determined following the UNI EN and ISO standards to characterize this wood and to compare with the data from literature. Density, 393 kg/m3, resulted consistent with the data reported in the literature; the basic density was lower than those reported in the literature and the difference could be related to wood porosity; volumetric shrinkage was among the lower ones detected by other authors. Colourimetric parameters describing the undifferentiated creamy-yellow colour of the wood were L* 73.08, a* 7.39, b* 27.88. Mechanical properties were in the wide range of data reported by other authors; compression strength 36.6 MPa, static bending strength 61.1 MPa and Brinell hardness 12.2 N/mm2. These results extend our knowledge on the physical, colorimetric and mechanical properties of the ayous wood. These results can be helpful to highlight differences in the physical and mechanical properties due to the influence of origin on wood physical and mechanical properties. Future studies on this topic are needed to better understand the changes in properties and the characterization of the Cameroonian provenance. The results on the properties of ayous wood give an account of the real possibilities of treatments and technologies that can improve the technological characteristics and the environmentally sustainable use of this resource for the origin and importing countries.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2022, 65, 209; Art. no. 1644-3985.391.09
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Residual Ultimate Strength of Box Girders with Variable Cracks
Autorzy:
Ao, L.
Wang, D.
Powiązania:
https://bibliotekanauki.pl/articles/116262.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
cracks
Ship Stability
Hydrodynamics
Box Girders
FEA
Ultimate Strength
Residual Ultimate Strength
Crack Parameters
Opis:
The aim of the present study is to investigate the residual ultimate strength characteristics of box girders with variable cracks under torsional loading. A series of finite element models are established by changing the crack length and crack angle using a commercial FEA program, ABAQUS. The cracks are located at the center and torques are applied on both ends of the box beam. Different aspect ratios are considered to evaluate the effects of cracks on box beams for various widths and lengths of panels in the middle yielding region. The accuracy of the nonlinear FEA results is veri?ed by a comparison with previous predicted formulas. Based on the FEA results, the relationship between the residual ultimate strength and crack parameters can be indicated in a function with period of in the form of Fourier series.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 2; 193-198
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on hydrodynamic configuration parameters of vertical-axis tidal turbine
Autorzy:
Li, Guangnian
Chen, Qingren
Liu, Yue
Zhu, Shanqiang
Yu, Qun
Powiązania:
https://bibliotekanauki.pl/articles/259704.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
vertical-axis turbine
configuration parameters
structure strength
tidal energy
efficiency
Opis:
In this paper, a numerical code for predicting the hydrodynamic performance of vertical-axis tidal turbine array is developed. The effect of the tip speed ratio, solidity, and preset angle on the hydrodynamic performance are discussed using a series of calculations. The load principle of the rotor and the variation principle of the turbine power coefficient are studied. All these results can be considered as a reference for the design of vertical-axis tidal turbines.
Źródło:
Polish Maritime Research; 2020, 1; 116-125
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary report on engineering properties and environmental resistance of ancient mud bricks from tell el-retaba archaeological site in the nile delta
Autorzy:
Welc, Fabian
Trzciński, Jerzy
Zaremba, Małgorzata
Rzepka, Sławomir
Szczepański, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2025359.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ancient Egypt
mud bricks
physical parameters
compressive strength
Nauki o Ziemi
Opis:
The archaeological site Tell el-Retaba in north-eastern Egypt, about 35 km to the west of Ismailia city, is located in the middle of Wadi Tumilat, a shallow valley running from the Nile Delta to the Bitter Lakes, along which flows the Suez Canal. In ancient times the valley was a route between Egypt and Syro-Palestine, strongly fortified in the New Kingdom times (16th–11th century BC). Mud bricks were analyzed from two parts of the Wall 1 (core of grey-brown bricks and inner extension of green bricks) in a fortress which existed during the Ramesses II times. Grain-size composition of the studied bricks was almost identical in both parts of the wall, suggesting the same source material for a production of brick. However, significant differences were observed in physical and mechanical properties (uni-axial compressive strength) in both types of bricks. Bricks from the core had lower bulk density, higher porosity and soak faster, whereas their resistance parameters were much lower than those of the bricks from the inner extension. The reason for such large differences in brick properties was a technology of their production, particularly proportion of components, water volume added during brick formation or density degree. Brick preparation and in consequence, physical-mechanical properties had direct influence on preservation of defensive structures during environmental changes related to changes of groundwater and surface water levels or of precipitation. Ancient Egyptians responsible for construction works in mud brick structures of the fortress must have had good knowledge and experience. This could be observed particularly for the heaviest and most important construction element that is the defensive wall, founded on well-densified deposits. It was also testified by higher resistance of green bricks from the inner extensions, which probably originated slightly later and were intended to reinforce a weaker core built of grey-brown bricks.
Źródło:
Studia Quaternaria; 2016, 33; 47-56
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric Analysis on the Progression of Mechanical Properties on FSW of Aluminum-Copper Plates
Autorzy:
Deepati, Anil Kumar
Alhazmi, Waleed
Zakri, Waleed
Shaban, Essam
Biswas, Pankaj
Powiązania:
https://bibliotekanauki.pl/articles/2180606.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
tool geometry
process parameters
micro-hardness
tensile strength
weld microstructure
Cu alloy
Al alloy
Opis:
The contemporary work manifests that friction stir welding (FSW) is a viable avenue for joining AA1100 aluminium (Al) to C12200 copper (Cu) plates. In this present study, the response of distinctive welding parameters (viz. tool geometries, tool rotational speed, tool travel speed, and tool plunging depth) on weld quality has been investigated. The present work focused on both microstructural investigation and mechanical properties examination. It has been observed that the process parameters have significant effects on weld quality. The design of the experiments has been executed considering four welding input parameters in two variables and selected L-16 orthogonal array to limit the experimental replications. It has been observed that good quality of welds produced by keeping the tool pin offset around 4mm towards the aluminium side and 2mm towards the copper side. And it has also been noticed that right-hand threaded tool pins are giving good weld quality compared to left-handed thread. The joint efficiencies for the welds E2, E14 which were welded by RHT tools were 75.3% and 74.61% and the Strength (UTS) of the welds for the same tools exhibit’s greater than the LHT tools i.e., 98 and 95Mpa. Moderate hardness values are observed for the same welds E1 and E14 with the parameters 1100rpm, 98welding speed, and 1.6mm tool plunge depth. . It also noticed that the weld quality can be significantly enhanced by using proper tool plunge and tool pin geometries compared to the other process parameters.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 2; 168--178
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of FFF process parameters and macrostructure homogeneity on PLA impact strength
Wpływ parametrów procesu druku metodą FFF i jednorodności makrostruktury na udarność PLA
Autorzy:
Bączkowski, Michał
Marciniak, Dawid
Bieliński, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2088250.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:
PLA
3D printing
impact strength
process parameters
additive manufacturing
druk 3D
udarność
parametry procesowe
wytwarzanie przyrostowe
Opis:
The article presents studies of the additive manufacturing printing parameters influence on the impact strength of PLA samples obtained by the fused filament fabrication (FFF) method. Two process variables were taken into account in the research program: the height of the printed layer and the printing temperature. An optical microscope was used to analyze the cross-section image (breakthrough) of the samples. The impact strength was determined at −40°C and 23°C. Selected geometric features of the macrostructure (uniformity and thickness of individual layers, voids) determined on the basis of the sample cross-section image analysis, enhanced the possibility of assessing the PLA impact strength, depending on the adopted process variables and the temperature at which the experiment was carried out.
W artykule przedstawiono badania wpływu parametrów druku addytywnego na udarność próbek z PLA otrzymanych metodą FFF (fused filament fabrication). W programie badań uwzględniono dwie zmienne procesowe: wysokość drukowanej warstwy i temperaturę druku. Do analizy obrazu przełomu próbek wykorzystano mikroskop optyczny. Oznaczono udarność w temperaturze -40°C oraz 23°C. Wybrane cechy geometryczne makrostruktury (równomierność i grubość poszczególnych warstw, puste przestrzenie) wyznaczone na podstawie analizy obrazu przekroju próbek, pogłębiły możliwość oceny udarności PLA w zależności od przyjętych zmiennych procesowych, a także temperatury w jakiej zrealizowano eksperyment.
Źródło:
Polimery; 2021, 66, 9; 480--483
0032-2725
Pojawia się w:
Polimery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A New Quasi Sujatha Distribution
Autorzy:
Shanker, Rama
Shukla, Kamlesh Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1058938.pdf
Data publikacji:
2020-09-04
Wydawca:
Główny Urząd Statystyczny
Tematy:
Sujatha distribution
quasi Sujatha distribution
moments
reliability properties
stochastic ordering
stress-strength reliability
estimation of parameters
goodness of fit
Opis:
The aim of this paper is to introduce a new quasi Sujatha distribution (NQSD), of which the following are particular cases: the Sujatha distribution devised by Shanker (2016 a), the sizebiased Lindley distribution, and the exponential distribution. Its moments and momentsbased measures are derived and discussed. Statistical properties, including the hazard rate and mean residual life functions, stochastic ordering, mean deviations, Bonferroni and Lorenz curves and stress-strength reliability are also analysed. The method of moments and the method of maximum likelihood estimations is discussed for estimating parameters of the proposed distribution. A numerical example is presented to test its goodness of fit, which is then compared with other one-parameter and two-parameter lifetime distributions.
Źródło:
Statistics in Transition new series; 2020, 21, 3; 53-71
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of selected FSW process parameters on mechanical properties of 6082-T6 aluminium alloy butt joints
Wpływ wybranych parametrów procesu zgrzewania metodą FSW na właściwości mechaniczne doczołowych złączy stopu aluminium 6082
Autorzy:
Krasnowski, K.
Sędek, P.
Łomozik, M.
Pietras, A.
Powiązania:
https://bibliotekanauki.pl/articles/352643.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
właściwości mechaniczne złączy FSW
wytrzymałość na rozciąganie złączy FSW
wytrzymałość zmęczeniowa złączy FSW
parametry procesu FSW
mechanical properties of FSW joints
tensile strength of FSW joints
fatigue strength of FSW joints
FSW process parameters
Opis:
In the friction stir welding (FSW) process a rotating and travelling tool equipped with a specially designed probe is slowly plunged into joined materials, plasticizes and stirs them thus forming a joint. Various geometric shapes of stirring tools make the motion of plasticized material very complex, which, in turn, translates to the structure and mechanical properties of joints. The article presents the results of tests focused on the impact of selected FSW process parameters on the mechanical properties of butt welded joints made of 6082 aluminium alloy. The tests were performed at various linear welding speeds, using singleand double-sided test joints welded with three types of stirring tools, differing in probe and shoulder geometry. The article reveals the results of mechanical and fatigue tests of the FSW joints.
W procesie zgrzewania FSW obracające i przesuwające się narzędzie z odpowiednio zaprojektowanym trzpieniem zagłębia sie w łaczone materiały, uplastycznia je oraz miesza ze sobą przez co powstaje złącze. Różne kształty geometryczne narzędzi mieszających sprawiają, że ruch uplastycznionego materiału jest bardzo złożony. Przekłada się to na budowę strukturalną złączy i ich właściwości mechaniczne. W artykule przedstawiono wyniki badań wpływu wybranych parametrów procesu zgrzewania metoda FSW na właściwosci mechaniczne doczołowych złączy zgrzewanych ze stopu aluminium 6082. Badania prowadzono na złączach próbnych zgrzewanych jednostronnie oraz dwustronnie przy użyciu trzech typów narzędzi mieszajacych, różniących się geometrią trzpienia i wieńca opory, oraz przy różnych prędkościach liniowych zgrzewania. Przedstawiono wyniki badań mechanicznych oraz badań zmęczeniowych złączy zgrzewanych metodą FSW.
Źródło:
Archives of Metallurgy and Materials; 2011, 56, 4; 965-965
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on geo-mechanical properties of rock salt in Kłodawa diapir
Badania właściwości geomechanicznych soli kamiennej z wysadu Kłodawa
Autorzy:
Flisiak, D.
Kolano, M.
Powiązania:
https://bibliotekanauki.pl/articles/348625.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
górotwór solny
parametry geomechaniczne soli kamiennej
wytrzymałość i odkształcalność
właściwości reologiczne
salt rock mass
geo-mechanical parameters of rock salt
strength and strain
rheological properties
Opis:
Laboratory research on salt rock mass, univocally indicates the different character of this medium in comparison with other rock materials. Salt rock mass is not a homogeneous medium, and the structure variability of the salt series, their geological history, or depth of actual deposition of strata, can be the reason for significant diversification the of its geo-mechanical properties. This article shows the results of laboratory testing on rock salt samples drawn from the Kłodawa diapir. The tests carried out include single-axial compression tests, triaxial compression tests, creep tests with a constant and variable load, and tensile tests by means of transverse compression (Brazilian method). The research was carried out to determine and check the geo-mechanical parameters of rock salt.
Przeprowadzone do tej pory laboratoryjne badania górotworu solnego jednoznacznie wskazują na odmienny charakter tego ośrodka, w porównaniu z innymi materiałami skalnymi. Górotwór solny nie jest ośrodkiem jednorodnym, a zmienność budowy serii solnych, ich historia geologiczna czy głębokość aktualnego zalegania w wysadzie, mogą być powodem znacznego zróżnicowania własności geomechanicznych. Niniejszy artykuł przedstawia wyniki badań laboratoryjnych soli kamiennej pobranej z wysadu Kłodawa. Przeprowadzone testy obejmowały próbę jednoosiowego ściskania, próbę trójosiowego ściskania, próbę pełzania ze stałym i zmiennym obciążeniem oraz próbę rozciągania metodą poprzecznego ściskania (metoda brazylijska). Celem badań było wyznaczenie i sprawdzenie parametrów geomechanicznych soli kamiennej.
Źródło:
AGH Journal of Mining and Geoengineering; 2012, 36, 2; 145-153
1732-6702
Pojawia się w:
AGH Journal of Mining and Geoengineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 20

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