Temat: Maintenance - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Optimisation of aircraft maintenances in the polish armed forces
Autorzy:: Kowalski, M.
Waślicki, P.
Żak, J. M.
Powiązania:: https://bibliotekanauki.pl/articles/246572.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aircraft
maintenance system
optimisation task
Opis:: Maintaining the aircrafts (AC) of the Polish Armed Forces in operating condition is determined by adequate resources to secure maintenance and repairs possessed by the companies implementing these tasks on them. The article characterises and then describes formally the Aircrafts Maintenance System in the Polish Armed Forces. The assumptions of the aircraft maintenance system model, proposed model structure, and mapping of aircraft maintenance performance were described. The most important elements (such as data, decision variables, boundary conditions and assessment criterion function) of an optimisation task aimed at minimising the executed aircraft maintenances’ costs were formulated. For this purpose, the record of evaluation criterion functions of the companies performing aircraft maintenance was shown. The article was completed with a conclusion, which underlined the importance of the proposed optimisation model. The optimisation model proposed in the article allows evaluating the aircraft maintenances’ organisation and their parameters. The formal record concerns both in the case of one-dimensional maintenance (one aircraft type) and multi-dimensional one (various aircraft types).
Źródło:: Journal of KONES; 2016, 23, 4; 225-235
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Maintenance strategy by controlled consumption of operational potential
Autorzy:: Pająk, M.
Woropay, M.
Powiązania:: https://bibliotekanauki.pl/articles/245408.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: exploitation
maintenance management
operational potential
Opis:: The main groups of processes executed during exploitation phase of a machine are service and operating processes. The main objective of the operating processes is a generation of machine's operation effects. While an objective of the service processes is a reconstruction of object's exploitation properties, which are necessary to proper machine operation. In the case of complex, crucial exploitation systems the service and operating processes can't beperformed in the same time. Then, it is necessary to implement adeąuate strategy of exploitation processes execution. According to carried out studies it was stated that the service and operating processes could be expressed as functions of an operational potential amount included in an exploitation system. It was also stated that execution of the exploitation processes according to the optimal maintenance strategy guaranties minimisation of an operational potential amount untransformed to effects of the exploitation system operation. In the case of the analysed class of complex, crucial, strategic exploitation systems the start moment of the service processes is defined a several months in advance. In this paper, the maintenance strategy by controlled consumption of operational potential is presented. The strategy is formulated as an optimal method of exploitation processes execution. It is especially useful in the case of complex systems where it should be make a most of the operational potential.
Źródło:: Journal of KONES; 2009, 16, 4; 367-374
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Developing innovation through data collection and analysis
Autorzy:: Monteiro Tavares, C. M.
Szpytko, J.
Powiązania:: https://bibliotekanauki.pl/articles/244606.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: vehicle maintenance
digitalization
data analyses
Opis:: This paper is part of the study, for the creation of maintenance engineering culture and a system capable to control the input and output of vehicles operation and maintenance in developing countries. The focus of this paper will be the use of digital technologies to change business models, basing on the analyses of the data collected to develop innovation in transport system by creation of a system that works according to the local needs. This work has, as case of study, the transport system in Cape Verde (Praia city); a bus company, operating in the city for more than 40 years, will provide the data for analyses. The study of the exploitation efficiency of the transport system will focus in the analyses of the data collected, after the definition of the data for collection, is defined how the data will be analysed and used in order to create the desired solution. In this paper is also defined the platform used for data collection. The definition and selection of the vehicle systems/components for data collection has been supported by engineers and mechanics with long experience and knowledge of the local situation as well as vehicles operation and maintenance. The information that, if collected and analysed correctly, can help transform the vehicle operation and maintenance, data collection can empower us to direct resources toward the modules that are in most pressing need of technical refinement. With this knowledge base, we will be able to use predictive analysis to identify what, how and where to improve the services and manage the vehicle maintenance and operation.
Źródło:: Journal of KONES; 2017, 24, 2; 153-158
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The analysis of usefulness of operational potential consumption models to control complex technical systems maintenance
Autorzy:: Pająk, M.
Powiązania:: https://bibliotekanauki.pl/articles/246382.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: exploitation
maintenance management
operational potential
modelling
Opis:: The carried on studies consider a crucial complex exploitation system of strategic importance from the national economy point of view. In case ofsuch class of systems, operation and service processes should be executed according to maintenance strategy named maintenance strategy by controlled consumption of operational potential. Thanks to it, optimal amount of operational potential included in the system can be transformed into the effect of the system operation. To execute exploitation processes according to the mentioned above strategy a model of operational potential consumption process should be implemented. The model estimates amount of operational potential consumed during exploitation processes execution. During carried out studies, models used to manage exploitation systems maintenance were identified. In the paper, identified models are divided into groups of analytical, stochastic and system ones. Next, usefulness of each group of models to control processes of exploitation phase of crucial complex strategic exploitation systems was discussed. As a result it was stated that it is necessary to create the universal system model, which can project influence of forcing factors on a s tate of technical object being a part of considered class of technical systems. In the paper, a structure of created universal system model was also proposed. This model was created by implementation the artificial intelligence techniques in form of genetic algorithms and fuzzy logic. Fuzzy logic was used to model approximate character of model input data and genetic algorithms were used to optimize a value of model output data.
Źródło:: Journal of KONES; 2010, 17, 2; 387-393
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Selected aspects of the maintenance system optimisation of the Polish Armed Forces helicopters
Autorzy:: Kowalski, M.
Waślicki, P.
Żak, J.
Powiązania:: https://bibliotekanauki.pl/articles/241597.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: helicopters
maintenance system
optimization of system
Opis:: The maintenance of helicopters at the airports of the Polish Armed Forces in the state of technical efficiency determines the possession – by the entity securing their maintenance, repair – of appropriate resources and the maintenance system. The article presents the current state of the operation processes of helicopters in the Polish Army. The characteristics of the helicopter maintenance system model and the basic assumptions were described, and the mathematical records of input data to the system were identified and presented. The selected elements of the optimisation task, its decision variables, and constraints were formulated. The initial assessment of the quality of the proposed solution of the helicopter maintenance system model. The essence of the system optimisation problem, which relates to minimising the cost function and maximising the system’s readiness function, was emphasised. In addition, an example of appropriateness of applying such an approach is presented on the basis of the School Aviation Base. The article was concluded with a short summary, which stressed the importance of this type of the optimisation system.
Źródło:: Journal of KONES; 2018, 25, 3; 289-297
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Operational strategy of military motor vehicles
Autorzy:: Niziński, S.
Kupicz, W.
Powiązania:: https://bibliotekanauki.pl/articles/244538.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: motor vehicles
control
operation
diagnostics
maintenance
Opis:: The paper presents an outline of a new strategy to improve operational system of military motor vehicles. Technical diagnostics method is a tool for controlling the motor vehicles maintenance in the state of their functional and professional operability. Three criteria have been assumed to control and maintain vehicles in the state of their technical operability, effectiveness and safety. It was found that the safety of military vehicles is controllable by board-external diagnostic systems as well as diagnostic systems as part of their operating systems. An algorithm is presented for diagnosing, maintaining, and assessing vehicles security in combat. It was found necessary to develop an improved technology for vehicles maintenance, including technological processes, organization of the processes implementation progress and their infrastructure. The organizational chart has been presented of the motor vehicles technological diagnostics and maintenance process. The paper also includes the concept for assessment of the vehicles operational effectiveness based on criteria of the static and dynamic coefficient of technical readiness and costs.
Źródło:: Journal of KONES; 2011, 18, 1; 395-402
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Damage rate as a reliability characteristics having significant influence on the operational quality of the technical object 375TS being operated and maintained in the transport systems
Autorzy:: Muślewski, Ł.
Wdzięczny, A.
Powiązania:: https://bibliotekanauki.pl/articles/244883.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
reliability
efficiency
maintenance
failures
Opis:: This paper presents theoretical basis for evaluation of the transport system operation quality. A general evaluation model was built, and further part of the paper is to consider the theme of damageability of the means of transport, as a reliability feature, constituting one of the most important criterion to evaluate the transport system operation. Based on the analysed references in question as well as on the results of our own research it has been found that the damages to the means of transport, being utilised within the transport systems, are a result of interaction of various forcing factors. Some number of the damages results from natural wear of the means of transport elements, which is a natural phenomenon, while the remaining damages may be caused by an inefficient repair of the previous damage. This leads to so called secondary damages to the repaired element, occurred within a short time interval, which is a proof of inappropriate organization of the repairs, poor training level of the repairing teams, limits related to pre and after repair diagnosis, which directly affects reliability of the means of transport and consequently the operation quality of the transport systems in which they are being operated and maintained. Based on the analysis of the investigation results it has been found that the primary damages are independent on one another and they occur randomly. The secondary damages are dependent, because their occurrence depends on prior occurrence of the primary damage and the effect of its improper repair or improper repair of the next secondary damage.
Źródło:: Journal of KONES; 2008, 15, 4; 375-384
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Rules for the organization and functioning of a maintenance support system in a military unit : selected aspects
Autorzy:: Markowska, M.
Knapik, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/242668.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: maintenance support
operation
technical maintenance
automotive vehicle utilization
obsługa techniczna
operacja
konserwacja techniczna
użytkowanie pojazdów samochodowych
Opis:: One of the most important tasks of military logistics is to ensure proper use and technical maintenance of armaments and military equipment. Providing maintenance support services on the modern battlefield, with its saturation with complex technical solutions, poses a significant challenge for the logistics system of the Armed Forces of the Republic of Poland. It is the duty of military logistics to adjust the potential of logistical sub-units as well as the organizational scheme and procedures of logistical support in accordance with changes occurring in the field. In times of peace, maintenance support services are focused on preventing equipment malfunctions. If a given piece of equipment becomes non-operational, their task consists in restoring it to full working order, taking into account all economic considerations. The vehicles should feature good traction characteristics in varied terrain and be adapted to operation in both cold and hot environments. The training of repair sub-unit staff remains an important element affecting the standard of maintenance support.
Źródło:: Journal of KONES; 2018, 25, 1; 283-288
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Method for assessment and control of availability of executive subsystem of a transportation system
Autorzy:: Woropay, M.
Migawa, K.
Powiązania:: https://bibliotekanauki.pl/articles/246869.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
availability
operation and maintenance process
Opis:: In this work, a method for assessment and control of availability of executive subsystem consisting of elementary subsystems of the type has been presented. The goal of the executive subsystem is to perform the assigned transport tasks over set routes, with a given frequency, according to a set schedule. A proper accomplishment of the transport task is possible only if the required number of technical objects (transport means) is prepared to perform the assigned task in a given time. Among many significant criteria used for assessment of a transport system operation there is one of special importance that is availability of the executive subsystem to perform the assigned tasks. Availability of the executive system to perform the assigned tasks depends on availability of particular technical objects (transport means) used in the system of transportation and their number. On the basis of the above statement, it can be said that control of the executive subsystem availability can be carried out both by selecting technical objects with the required availability and matching the required number of the objects which are to be used in the system in order to ensure proper accomplishment of the transport tasks. In this work there has been discussed a method for determination of the required availability of a single object as well as the required number of technical objects indispensable to perform appropriately the assigned transport task, on the basis of the transportation system availability assessment. Availability of the transportation system is determined on the basis of a mathematical model of the operation and maintenance process of technical objects, in the studied transportation system. Exemplary results have been presented on the basis of experimental data, obtained from the tests carried out in a real operation and maintenance system of transport means.
Źródło:: Journal of KONES; 2012, 19, 3; 491-498
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Economic aspects of selecting means of bus transport
Autorzy:: Woropay, M.
Perczyński, D.
Powiązania:: https://bibliotekanauki.pl/articles/247628.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
bus transport
maintenance process
road transport
Opis:: The paper presents a method of selecting technical objects for performance of the tasks received by the controlling subsystem. The investigation object, being the basis to illustrate considerations presented herein, is an operation and maintenance system of an urban bus transport in a selected agglomeration. Transportation of passengers by means of bus transport is performed in the determined quantitative and territorial scope (specified by a schedule of transport task performance). When operating and maintaining buses various events occur, the results of which have an influence on the processes of using and servicing the buses, as well as on their technical condition and economic effect of the work of the system in which they are used. The buses of an urban transport system, during the operation and maintenance process, may be in various maintenance states forming the state space S. It is important, in the aspect of assuring continuity of performance of transport tasks and the technical and economic efficiency achieved by the system, that as many vehicles aspossible are in the state of serviceability and perform the transport tasks during the phase of a working cycle. It is affected by such factors as: the features of the vehicles being operated and maintained, the type of the equipment and number of the service sites of the service station and of the units of technical emergency service, providing the units of technical emergency service with diagnostic apparatuses, the nature of the transport tasks being performed, the method and scope of performance of the s ervice processes and others. So, there is apossibility to have an influence on the system economic efficiency by selecting the buses with the use of the economic criterion.
Źródło:: Journal of KONES; 2010, 17, 3; 513-519
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: New diagnostic methods of alternative LPG/CNG injection systems
Autorzy:: Flekiewicz, B.
Flekiewicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/242343.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: CNG
LPG
SI engine
maintenance
fuel injection
Opis:: Diagnostic methods of gas alternative feeding systems were presented in this paper. Methods of validation for properly cooperation between OEM petrol systems and gas injection system were described. Procedures allowing the analysis ofproper operation of both petrol and alternative feeding systems were presented. A detailed study has been done on seąuential injection system, as a solution fulfilling restricted requirements of new SI engines. Obtaining both satisfactory emission reduction level and minimal power drop for alternative engine gas operating is only possible with all diagnostic procedures especially ones connected with system prototyping phase being done with high precision equipment characterized by low inertia of transducers. Sensors output signals reąuire acquisition with the use of more complex and faster systems. Proper choice of test equipment at each step, guarantees repeatability and what results also reliability ofrealized diagnostic procedures. Influence of alternative gas fuelling systems on mixture adaptation, transfer function, diagnostic methods for prototyping phase, diagnostic procedures for alternatively powered vehicle operation, diagnosis of sequential gas injection system during normal system maintenance are presented in the paper.
Źródło:: Journal of KONES; 2009, 16, 2; 109-116
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Influence of the selected exploitation tasks on airline operating cost and flight safety taking as an example turbofan engine
Autorzy:: Glowacki, P.
Powiązania:: https://bibliotekanauki.pl/articles/242859.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aircraft engine
maintenance
exploitation cost
flight safety
Opis:: The total cost of the aircraft maintenance was in 2012 about $ 80 billion, including maintenance, repair and overhaul, ie. MRO market (Maintenance, Repairs and Overhaul), the operators of these aircraft have spent about $ 60.7 billion – of which 40% were direct maintenance costs of the engines. It can be concluded that main influencer on airline direct maintenance costs are spending for power plants. The article shows that the appropriate exploitation of the engine, leading not only to the total operating costs (mainly the cost of fuel and maintenance) reduction. Also through continuously engine health monitoring, resulting in a higher reliability, and thereby increases the safety of flying and – what is now especially important – by decreasing fuel consumption reduces greenhouse gas and exhaust toxic components emissions. The modern aircraft engine and its basic performances were described. Based on data, analysis from approximately twenty thousand flights of the specific operator and self-experience, the benefits from the use of specific maintenance and operational tasks are presented. Results of the calculations were demonstrated which proved that engine life extension between overhaul (TBO) has impact on the operator’s maintenance reserves reduction, positive cash flow and fuel cost savings. The article confirms that it need not be contradiction between aircraft operator economic effect, and the improvement of safety of flying.
Źródło:: Journal of KONES; 2016, 23, 2; 129-136
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: The estimation of the increased limitation of the visibility in the light commercial vehicles
Autorzy:: Olejnik, K.
Powiązania:: https://bibliotekanauki.pl/articles/242969.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: maintenance
demands
visibility
construction of the car
Opis:: In the report there is discussed the problem of changing demands in the binding rules concerning the technical conditions. During maintenance, the lack of information from the surrounding of the vehicle is one of the reasons of collisions and accidents. There is a radical limitation of unobstructed observation of the whole area surrounding trucks of N1 category in comparison to the car of M1 category. Vehicles which have the same body and which are designed to transport people - M1 category or load – N1 category, they have different equipment, such as side glazing and back walls. Those who are driving these vehicles do not have comparable and identical visibility. The open loadcarrying body in the truck creates the screen obscuring of the big part of the vehicle's surrounding which precludes the direct observation of the considerable area. The devices of the indirect visibility enable to observe only the part of the area, which is directly invisible. There is an important need to change the regulation as far as construction and vehicles equipment is concerned. This paper offers the change of the philosophy of the regulations requirements in the area of visibility. Technical progress and development in the area of visual transfer devices helps to use them in the vehicles in order to improve the possibility of observing the surrounding of the vehicle. There is no reason to tolerate the worse visual transfer in the vehicles N1 category.
Źródło:: Journal of KONES; 2012, 19, 4; 513-518
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Operational loads of combat vehicles
Autorzy:: Borkowski, W.
Rybak, P.
Hryciów, Z.
Wysocki, J.
Papliński, K.
Michałowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/244652.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combat vehicles
maintenance
modeling and experimental research
Opis:: The paper describes dynamic load-generating sources and their effects on combat vehicles (CV), placed people and equipment within it. The variety of the operation conditions causes a complex dynamic load, both in terms of level, direction and distribution. The effects of the impacts are shown in photographs. It is important to know the level of loads in terms of the development of resistant and safe high-speed tracked combat vehicles. The selected results of its own researches of high-speed tracked combat vehicles were presented. Research were carried out under conditions similar to those typical for this class of vehicles, both during the rides on the road, the ground and obstacles on the specially constructed for this purpose. The results of research and analysis are compared in the form of graphs and the estimated value. The paper presents angular movement of the hull of the CV as well as displacements of carrying wheels during overcoming a single obstacle, elastic characteristics of hydro-pneumatic suspension components, distribution of pressure acting on a selected area of the bottom of the hull after mine explosion and power spectral density estimator of tank gun vibration as well as being the source longitudinal vibration of the hull tank. The presented scope and methodology allows the multi-variants investigation and estimate the loads of the hall, interior fittings and people in special vehicles and other objects that may be exposed to this type of loads.
Źródło:: Journal of KONES; 2011, 18, 1; 77-84
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Preventive maintenance with imperfect repairs of vehicles
Autorzy:: Okulewicz, J.
Salamonowicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/246462.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
maintenance
preventive replacement
imperfect repair
statistical diagnosis
Opis:: A vehicle ability to realise transport tasks may be restored by repairing only failed elements. This is called imperfect repair as the vehicle is not as good as new after such a repair. Preventive replacement is an example of imperfect repair as well. The advantage of such maintenance is that it enables controlling a reliability level of a fleet of vehicles. Sets of vehicles elements which should be replaced in that aim are derived on a base of statistical diagnosing with use of data about elements failures. The acceptable level of a failure risk while executing transportation tasks has been taken as a criterion. An algorithm for selecting elements for preventive replacement has been developed. It was shown that a level of a fleet reliability can be controlled by changing an order of a quantile function in coordination with a number of redundant objects. A computer simulation model of the vehicle fleet was used as an example to illustrate derived dependencies. In particular algorithm for selecting elements for preventive replacement, graph of model states, graphical interpretation of calculating new quantile orders, simulation experiments results for system n out of n, simulation experiments results for d = 2,5 are presented in the paper.
Źródło:: Journal of KONES; 2007, 14, 3; 485-494
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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