Wszystkie pola: constructions - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Design of automotive constructions based on interior and body outfit of offroad car
Autorzy:: Błasiński, T.
Kaźmierczak, A.
Krakowian, K.
Górniak, A.
Powiązania:: https://bibliotekanauki.pl/articles/248143.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: off road transport
automotive constructions
strengths calculations
Opis:: Travelling off the road requires an adequate vehicle. The basic car needs to be properly chosen and prepared according to its destination. Due to understanding problem, the paper explains differences between various kinds of four-wheeling like extreme passage rally, time race or just off-road expeditions. The paper contains classification and description of the most popular in western Europe terrain cars, their construction solutions and general advantages and disadvantages. In the document are also presented vehicle selection criteria. This issue is as significant as proper choice of adequate driving type. Established criteria relate to variety and power of engines, four wheel drive, reduction gearbox, differential locks, weight, and the most important geometric and operation parameters. Due to above features is made the comparison and choice of car for further development. The review, evaluation and selection of building elements are customized to chosen car. Project of development of interior contains construction assumptions, strength calculations and numerical model of the drawer located in the rear of the luggage. Additionally there are also drawings of arrangement of particular body elements. Graphical model, drawings and strengths calculations are performed using the Autodesk Inventor Professional 2011 and AutoCAD Mechanical 2011. Just as the chosen equipment, project is adjusted to dimensions of luggage area of chosen car. Author’s design includes original spacing between the openings in exterior, what allows embedding drawer without any interference in the car body.
Źródło:: Journal of KONES; 2012, 19, 1; 21-27
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Suitability analysis of thermally hardened S540Q steel sheets for welded constructions working in low temperatures
Autorzy:: Cicholska, M.
Powiązania:: https://bibliotekanauki.pl/articles/246570.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: low-alloyed quality steels
heat treatment of S540Q steel
welded constructions
Opis:: The conventional heat treatment is being replaced by thermal-plastic treatment. The process of steel hardening is carried out on quenching press with a double-sided water spray at the temperatures ranging from 600 to 700°C. The steel hardening process is conducted at the temperatures of 600-700°C with cooling in the air. After this, thermal hardening the steel sheets obtain the structure of a layered tempered matrensite with carbide and cyanide disperse separations The thermally hardened S540Q steel sheets 12 mm thick underwent examinations. The welding technology was presented. The sheets were welded semi automatically by means of MAG method. The usual welding conditions normally applied in industry were used after steel standardisations. The achievement of joints metallically continuous was confirmed by X-ray tests. The static tensile test was conducted to assess the applicability of this steel. The average values of the welded joints resistance to tensile strength were given. After conducting technological bend, test good ductility was noted. Steel microstructure was defined as low carbon tempered matrensite of layered construction. Microstructure observation was carried out in the joint axis, in heat affected zone and in native material. Hardness measurements were performed according to PN-EN 1043-1:2000 requirements. Impact test was conducted on the samples with a V cut notch at the temperatures of -20, -40, -60 Celsius degrees.
Źródło:: Journal of KONES; 2013, 20, 3; 105-109
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Suitability analysis of thermally hardened S620Q steel sheets used for welded constructions working in lowered temperatures
Autorzy:: Cicholska, M.
Powiązania:: https://bibliotekanauki.pl/articles/247532.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ow-alloyed quality steels
heat treatment of S620Q steel
welded constructions
Opis:: S620Q steel sheets 12 mm thick that were heat treated were subjected to research. The sheets weldability was examined during semi-automatic welding by MAG method, at the welding conditions usually applied in industry for welding normalized sheets of this steel. The achievement of metallically continuous joints was confirmed by X-ray examination, the correctness of making test joints was confirmed by the measurement of transverse warp and edges of sample sections. Moreover the following tests were carried out: static tensile tests, technological bending tests and impact tests on the samples with V-notch cut in positions S, P, C2 and C5. The joints microstructure was observed in the weld axis, in SWC and in native materials with the use of Neophot-2 optical microscope. Steel microstructure was classified as low-carbon, tempered martensite of layered construction. The bend tests were carried out by means of bending arbour 36mm in diameter. The impact energy values for test temperatures -60°C, -40°C and -20°C marked in the drawings are the mean values of breaking three samples at a given test temperature. The places ofnotches cuts applied on welded joints samples are required by Det Norske Veritas regulations for welded joints. Mechanical properties ofS620Q steel were given as reference.
Źródło:: Journal of KONES; 2010, 17, 4; 103-108
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Composite materials for warship constructions
Autorzy:: Kyzioł, Lesław
Powiązania:: https://bibliotekanauki.pl/articles/245851.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: polyester-glass composites
recyclate
modified wood
non-magnetic warships isotropic
Opis:: The article presents the basic properties of composite materials used for the construction of special ships. Static and dynamic characteristics of materials such as wood and polyester-glass composites are presented. Noteworthy are materials such as surface modified wood and polyester-glass composites with the addition of recyclate. Composite materials are widely used materials for the construction of non-magnetic warships. The article describes the properties of surface modified wood with polymethyl methacrylate and a polyester-glass composite with the addition of recyclate. The recyclate is fragmented, milled polyester-glass scrap. The content of the recyclate greatly affects the mechanical properties of the composite. The properties of the composite with the addition of recyclate depend on the recyclate content as well as the production technology and size of the recycled granulates. The test results showed that the increase in the recycled content causes a decrease in the mechanical properties of the composite. However, it should be remembered that these materials originated from waste, waste that is not subject to self-degradation, which have a very negative impact on the natural environment. At present, where there is a very large pollution of the natural environment, the processing and management of huge amounts of composite waste is an essential goal. A significant amount of recyclate significantly reduces the mechanical properties of the composite; however, the same large amount of recycled material has been transformed and used. The manufactured material and its structural elements are still non-magnetic structures and can be used on a less loaded element. The choice of material for the construction of special ships elements is determined not only by its properties but also by knowledge, experience, method of processing, economic and technical risk.
Źródło:: Journal of KONES; 2019, 26, 4; 135-140
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: New technical uses of marine space of the Baltic Sea
Autorzy:: Otremba, Z.
Powiązania:: https://bibliotekanauki.pl/articles/248030.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine transport
large scale constructions
physical fields
marine environment protection
Opis:: The Baltic Sea area has already been intensively used by variety of maritime economic sectors such as marine transport, fishing, tourism, extraction of sand and gravel and oil and gas exploitation. This is also an area of relatively intense military penetration. In addition, this is a place of various other investments, e.g. coastal technical infrastructure (port and transhipment terminals constructions, as well as technical measures of the shoreline defence against transgression of the sea), electrical energy transmission systems (high voltage cables plus large scale electrodes) and natural gas transmission huge pipelines. Over the next decades, the use of the Baltic Sea will expand rapidly, particularly due to constructions of new coastal and offshore wind farms, electrical energy transfer network, further intensification of various forms of shipping, development and construction of new ports and terminals and installing new oil extraction platforms. Some of these activities influences natural spatial distribution of physical properties of the sea space (such as acoustic field, magnetic field, salinity distribution etc.) as well as disturb different natural processes (such as natural coastal dynamics, sedimentation, migration patterns of mobile species etc). In order to present this problem, most important existing activities as well as the most recent large-scale constructions in the Baltic Sea are selected and presented in this study (with emphasis on the Polish Exclusive Economic Zone). Moreover most likely disturbances of natural distributions of physical properties of marine space are analyzed in light of the impact on the environment
Źródło:: Journal of KONES; 2012, 19, 1; 311-318
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The weldability assessment of thermally hardened S540Q steel sheets
Autorzy:: Cicholska, M.
Powiązania:: https://bibliotekanauki.pl/articles/243177.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: low-alloyed quality steels
heat treatment of S540Q steel
welded constructions
Opis:: High strength thermally hardened steels are more difficult to weld than low carbon construction steels. There is a danger of cold cracking caused by the presence of martensite in welded joints. The thermally hardened 12 mm sheets of S540Q steel underwent research. The sheets were welded semi-automatically by MAG method, in the welding conditions usually applied in industry for welding normalized sheets of this steel. The welding technology was presented. The X-ray tests were performer, which confirmed the achievement of metallically continuous joints. Samples were taken from the joints and the joints hardness distribution measurements were conducted. The microstructure was examined and the static tensile tests as well as technological bend tests were carried out. Hardness measurements were performed in three measurement lines for each joint according to PN-EN 1043-1:2000 requirements. Joints microstructures were examined in the joints axis, in HAZ and in native materials. Steel microstructures were classified as low carbon tempered matrensite of layered construction. Mean values of the selected joints tensile strengths were also presented. The tensile tests values of native materials of metallurgic certificates were given for the sake of comparison. The research results presented in the paper made it possible to determine the weldability of S540Q steel.
Źródło:: Journal of KONES; 2014, 21, 4; 43-48
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The non-linear strength-work of all body constructions the helicopter is - 2 during failure landing
Autorzy:: Fraczek, K. S.
Powiązania:: https://bibliotekanauki.pl/articles/241677.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
helicopter
mechanic
FEM
non-linear analysis
Opis:: The article presents the phases of helicopter's flight during the failure of the power - driven system. On the basis of Federal Regulations part 27, which demands the throw from the height of 19 inches, some computer simulations of dynamical construction work were performed. Accordingly to the F.R.27 a thin wall constructions cannot be damaged permanently. In order to show the correct work of the helicopters construction a structure model was built using the finite element method. The paper contains only the work of some main elements, which influence the safety of passengers. The final conclusions were formulated based on the assessment of the method of analysis and based on the results of analytical simulations done on the movements and increasing inertia forces were introduced to the model. In order to analyse the construction its work of resistance was assessed as well as the safety factor. Due to the increasing load, we observed that a deformation of some elements was increasing in a non-linear manner. Therefore the analysis had to be done using the non-linear methods. The loads during landing without power are too much more as during optimal method, which was been presents in [1], the probability landing on ice with failure engine is very small, the non-linear analysis was necessary, because loads on deformed structure were bigger than in linear analysis, the landing without power is all safe in all extremely situations. The article describes construction's prototype.
Źródło:: Journal of KONES; 2008, 15, 4; 133-138
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Determination of material characteristics necessary for modelling of marine structures exposed to small-calibre bullet
Autorzy:: Kiciński, Radosław
Szturomski, Bogdan
Jurczak, Wojciech
Powiązania:: https://bibliotekanauki.pl/articles/243479.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: sea constructions
CAE
marine mine destroyer
Opis:: The article presents the results of tests of impact properties of steel 1.3964 used on the construction of modern mine destroyers. Ships of this type, like any other military unit, may be exposed to small-calibre projectiles. Firing can be done, for example, from aircraft, drones or pirate units. The thickness of the plates used in the ship’s construction does not guarantee effective resistance to the projectile calibre 7.62 mm for all compartments of such ships. Thus, it is possible to modify the existing structure or apply additional solutions that will ensure a certain level of ballistic resistance. Solutions of this type are necessary in order to maintain the stability and buoyancy of the ship at the current level. During the tests, a stress-strain curve for steel 1.3964 was obtained, then the Johnson-Cook plasticity and damage model was proposed, which was used in the FEM simulation. The task was modelled as non-linear considering the deformation of both the sample and the projectile. The simulation was prepared in the CAE program, and then verified by an experiment on the shooting range. The results were presented in the form of diagrams and deformation figures, and were compared with photographs of samples and velocities after the specimen.
Źródło:: Journal of KONES; 2019, 26, 4; 105-111
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Fatigue strength analysis of welded aluminium stairs
Autorzy:: Jastrzębski, M.
Misztela, A.
Gołoś, K.
Powiązania:: https://bibliotekanauki.pl/articles/244513.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fatigue test
welded joints
aluminium thin-walled constructions
test zmęczeniowy
połączenia spawane
aluminiowa konstrukcja cienkościenna
Opis:: The article presents numerical analyses and results of experimental fatigue tests of the welded stairs made from prefabricated EN-AW 6063-T66 aluminium alloy thin-walled profiles. Fatigue life analysis of welded thin-walled structures is a complicated and demanding task. Fatigue analysis of stairs was carried out according to the concept of a weak link, which was verified experimentally. The FEM method was applied in strength analysis. The conducted research allowed identifying the weak link of the structure at the welded joint. The samples stairs were subjected to fatigue tests. The fatigue tests have been conducted using specially designed set up. The experiments confirmed the numerical analysis. The cracks occurred at welded joints before expected fatigue life to fracture. Then the stairs structure was modified by changing the weld joints arrangement. The fatigue tests were carried out again and showed further weaknesses of their structure cracking of the step profile. To precisely capture this problem, detail finite element calculations for the analysed stairs have been conducted. Applying the nominal stress method, this problem was solved changing the treads profile of the stairs step. The last improvement in the construction was sufficient to satisfy fatigue strength requirement of the analysed structure. The weak link approach and nominal stress method proved to be an effective tool in fatigue analysis of the examined structure.
Źródło:: Journal of KONES; 2018, 25, 1; 177-184
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Optimal project parameters of the bridge cranes main beams
Autorzy:: Vishnevetsky, G.
Kovalenko, V.
Sydorenko, S.
Brewczyński, D.
Powiązania:: https://bibliotekanauki.pl/articles/247431.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: machine building
bridge cranes
span beams
geometrical section parameters
optimal beam
constructions
time of free vibrations' decay
Opis:: In the article are presented main principles and leads-up to the choice of the general criterion of the main beams’ optimization. The main reasons leading to the destruction of arms include cyclic load causing fatigue phenomena, creep occurrence causing elements deformation beyond a critical state, the constructions’ blistering appearing owing to the metal maturing, corrosion of the main beams’ elements, leading to the loss of their carrying capacity. The general optimization criterion is chosen. The parameters of the main beams’ endurance are defined. The device for the measuring of the size and the character of the vibrations’ decay of the bridge cranes’ main beams is suggested. We have the results of the experimental information, received on the bridge cranes of the different plants. The work directions by the optimization of the constructive parameters of the cranes’ main beams are defined. Into the suggested construction of the span beam are put such statements: high values of the general optimization criterion’s; stiffness of the arm to the reduced weight ratio, possibility of the beam’s creation of the equal resistance, minimization of the local deflection tensions from the load cart on account of the inclined walls’ position. The construction of the patented span beam of the diaphragm construction is observed and described.
Źródło:: Journal of KONES; 2013, 20, 3; 411-417
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Development of constructions of electrical equipment and fuel systems for special-purpose vehicle based on the solutions of Zakład Doświadczalny Biskupiec sp. z o.o.
Autorzy:: Gąsior, R.
Kucharewicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/245007.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dashboard
regulator
fuel system
on-board system
Opis:: The aim of this article is to describe the development of electrical equipment systems for military vehicles and fuel systems of these vehicles. Both electrical installations and fuel systems of military vehicles should meet strict quality requirements and resistance requirements to various exposure specified in the standards and other normative documents. This applies both to new vehicles and to the vehicles, which have been in service for many years. The article presents electrical components and fuel systems of military vehicles in which the fulfilment of quality and electromagnetic compatibility requirements and the use of innovative solutions constituted the leading targets in their construction. A great emphasis during the construction was placed not only on the fulfilment of functional requirements but also on the degree of reliability, maintainability, technical handling flexibility and the use of modern materials that can be recycled after the liquidation of the product. The presented fuel systems meet strict modern requirements and are worth recommending for both the application in the equipment that has already been operated and in newly designed vehicles.
Źródło:: Journal of KONES; 2015, 22, 1; 95-106
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Analysis of calculation models of scaffolding constructions in light of experimental tests results of constructive scaffolding module
Autorzy:: Misztela, A.
Starczewski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/246563.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: static analyses
scaffold structures
computational models
different verification formulas
load evaluating
analiza statyczna
struktury rusztowań
modele obliczeniowe
szacowanie obciążenia
Opis:: The concern of the article is the analysis of multiple computational models of scaffolding construction, taking into account the experimental results obtained for a representative scaffolding construction module. Analyses of 25 distinct models have been performed, allowing selecting models that most accurately predict deformations of the real construction. The article deals with the issues of elastic-plastic second-order analysis in relation to the working anchored scaffolds and it is focused on the standardization of computational models for engineering calculations. Including in calculations the plastic bearing capacity reserve and using objective calculation procedures, allows optimal designing of the scaffolding and evaluating of the load capacity. Structural model analyses were carried out in terms of their conformity with the actual construction. For comparative purposes, the results of the analyses of individual models were evaluated according to different verification formulas to determine the extent of their applicability. The purpose of the article was to test the behaviour of the system under the influence of constant horizontal forces reflecting the influence of wind and rising from zero until destruction due to the vertical load.
Źródło:: Journal of KONES; 2018, 25, 1; 295-306
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Analysis of the drive constructions of extra-low pressure rubber-tired propellers of the vehicles for carrying goods
Autorzy:: Liashenko, M. V.
Chebanenko, A. P.
Shekhovtsov, V. V.
Powiązania:: https://bibliotekanauki.pl/articles/241663.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: cross-country vehicles
extra-low pressure tires
vehicle passability
transmission of power
transmission
Opis:: Overcoming of road impassibility, increase of vehicle passability are the issues that are always actual for the areas with insufficiently developed road network in remote regions of the North, the Far East, Siberia, and also the lack of roads in oil and gas production places and their transportation to gathering stations. This issue is also actual during rescue missions after natural disasters, emergency situations and technogeneous disasters. To solve this important issue domestic and foreign industries produced and produce different kinds of off-road vehicles and snow and swamp-going vehicles: caterpillar, ski-caterpillar, on low-pressure tires. The advantage of the latter is the discovery of new opportunities in transportation, ecological compatibility, improved productivity and passableness. It is important to mention that almost all vehicles on extra-low pressure tires can swim. The fact that they all possess hermetic frame contributes to it, what is more, this usage of extra-low pressure tires provides this opportunity. This opportunity to deliver goods by the vehicles with extra-low pressure tires (VELPT), having no restriction in exploitation in summer and winter in the conditions of Arctic weak tundra, increases the competitive power of these vehicles compared to caterpillar off-road vehicles. Moreover, their usage is much cheaper than delivery by helicopter. All these lead to the popularity of VELPT, the growth of the number of their types for various purposes and appearance of new producers of this type of off-road vehicles.
Źródło:: Journal of KONES; 2015, 22, 1; 181-184
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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