Temat: Maintenance - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Preventive maintenance of multiple components for hydraulic tension systems
Autorzy:: Dui, Hongyan
Zheng, Xiaoqian
Zhao, Qian Qian
Fang, Yining
Powiązania:: https://bibliotekanauki.pl/articles/2038176.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: preventive maintenance
reliability
importance measure
maintenance cost
Opis:: Automatically controlled hydraulic tension systems adjust the tension force of a conveyor belt under different working conditions. Failures of an automatically controlled hydraulic tension system influence the performance of conveyor belts. At present, the maintenance of automatically controlled hydraulic tension systems mainly considers the replacement of components when failures occur. Considering the maintenance cost and downtime, it is impossible to repair all the failed components to improve the hydraulic tension system. One of the key problems is selecting the most valuable components for preventive maintenance. In this paper, preventive maintenance for multiple components in a hydraulic tension system is analyzed. An index is proposed to select more reliable preventive maintenance components to replace the original ones. A case study is given to demonstrate the proposed method. When the cost budget increases, there are three different variations in the number of components for selective preventive maintenance (SPM).
Źródło:: Eksploatacja i Niezawodność; 2021, 23, 3; 489-497
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Proposal of content maintenance of cnc machine using methods of reliability centered maintenance
Autorzy:: Stuchlý, Vladimír
Poprocký, Roman
Čuboňová, Nadežda
Kuric, Ivan
Powiązania:: https://bibliotekanauki.pl/articles/103003.pdf
Data publikacji:: 2018
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: maintenance
reliability
reliability centered maintenance
konserwacja
niezawodność
Opis:: The paper presents the results of examination of the proposal content and the scope of maintenance of the machining center MCFV 1050 Basic through the RCM II - Reliability Centered Maintenance method. Based on the analysis of apriori and parametric reliability methods, it was decided to use the FMEA for analyze the causes and consequences of failure states using the software IQ-RM PRO 6. The structure, defined functions and fault functions were developed.The analyzed types of failure and types of maintenance tasks were processed in the RCM II Information and Decision Making Reports.The result is 10 proposed maintenance tasks performed in time intervals, 8 maintenance tasks performed as needed and 1 maintenance task performed after the specified performance.The end of the article discusses the suitability of the applied methods for the maintenance proposal and of the defined recommendations.
Źródło:: Advances in Science and Technology. Research Journal; 2018, 12, 3; 126-133
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:: Setting periodic maintenance intervals for diesel engines operated under difficult conditions
Autorzy:: Dobržinskij, N.
Powiązania:: https://bibliotekanauki.pl/articles/348499.pdf
Data publikacji:: 2017
Wydawca:: Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:: engine
reliability
maintenance
Opis:: Afghan highlands, landscape and altitude above the sea level, and geographical situation influence on the climate. Engines’ operation are very different from their work in European plains. Mountainous terrain variability has a significant impact on operation mode of the car’s chassis and transmission, and climate change determines the engine performance parameters. Mentioned factors result in technical performance characteristics and their costs. Defining requirements to preventive measures for technical failure would reduce technical repair costs and rational technical maintenance frequency would save funds for maintenance.
Źródło:: Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2017, 1; 173-188
1731-8157
Pojawia się w:: Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Algorithm for choosing the most optimal maintenance companies
Algorytm wyboru optymalnego sposobu prowadzenia firmy
Autorzy:: Salimov, R.
Vlasenko, P.
Powiązania:: https://bibliotekanauki.pl/articles/213216.pdf
Data publikacji:: 2013
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:: maintenance
reliability
maintenance cost
utrzymanie
niezawodność
jakość konserwacji
koszty utrzymania
Opis:: The algorithm for choosing the most optimal Maintenance Company is considered. The cost and quality rates such as Maintenance Cost, the Cost of Waiting Lines, the Costs of Aircraft Shipping to Maintenance Station, the Cost of After-maintenance Service, the Maintenance Quality rate are described. Ranges of permissible values of these parameters are justified.
Algorytm wyboru optymalnego utrzymania Firmy musi być przemyślany. W publikacji opisane są koszty i jakość. Przytoczono takie wskaźniki jak koszty utrzymania, koszty przestojów, koszty przewozów lotniczych, koszty uruchomienia serwisu, prędkość dostaw, jakość wykonania, konserwacja. W artykule uzasadniono zakresy dopuszczalnych wartości tych parametrów.
Źródło:: Prace Instytutu Lotnictwa; 2013, 5-6 (232-233); 109-114
0509-6669
2300-5408
Pojawia się w:: Prace Instytutu Lotnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Preventive maintenance models – higher operational reliability
Modele konserwacji zapobiegawczej a wyższa niezawodność eksploatacyjna
Autorzy:: Legát, V.
Mošna, F.
Aleš, Z.
Jurča, V.
Powiązania:: https://bibliotekanauki.pl/articles/301589.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: preventive maintenance
predictive maintenance
maintenance interval optimization
reliability
improvement
konserwacja zapobiegawcza
konserwacja predykcyjna
optymalizacja przerw konserwacyjnych
doskonalenie niezawodności
Opis:: The authors present a method for determining the optimal interval for preventive periodical maintenance and an optimal diagnostic parameter for predictive maintenance/replacement. Additionally, the authors raise the question: how does preventive maintenance influence the probability of failure and the operational reliability of system elements that have undergone preventive periodical maintenance? They answer the question using analytical and simulation computing approaches. The results are in quantitative form, giving relationships between preventive maintenance intervals and reliability functions. Examples demonstrate suitability of the method for typical engineering objects using a three parameters Weibull distribution. Application of the method is of substantial benefit to both the manufacturer and the user of technical equipment.
Autorzy przedstawiają metodę określania optymalnego czasu przerwy na okresową konserwację zapobiegawczą oraz optymalnego parametru diagnostycznego dla konserwacji predykcyjnej/wymiany Dodatkowo, autorzy zadają pytanie, jaki jest wpływ konserwacji zapobiegawczej na prawdopodobieństwo wystąpienia uszkodzenia oraz na niezawodność eksploatacyjną elementów systemu, w stosunku do których zastosowano okresową konserwację zapobiegawczą. Odpowiedzi na te pytania, autorzy poszukują posługując się metodami analizy i symulacji komputerowej. Wyniki podane w formie ilościowej, informują o związkach między przerwami na konserwację predykcyjną a funkcjami niezawodnościowymi. Podane przykłady pokazują, z wykorzystaniem trójparametrowego rozkładu Weibulla, że proponowana metoda może być stosowana w przypadku typowych obiektów inżynieryjnych. Zastosowanie omawianej metody przynosi znaczące korzyści zarówno wytwórcom jak i użytkownikom sprzętu technicznego.
Źródło:: Eksploatacja i Niezawodność; 2017, 19, 1; 134-141
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Particle Swarm Optimization Fuzzy Systems for the Age Reduction Imperfect Maintenance Model
Autorzy:: Li, Che-Hua
Powiązania:: https://bibliotekanauki.pl/articles/301843.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: imperfect maintenance
preventive maintenance
reliability
fuzzy modeling
particle swarm optimization (PSO)
Opis:: This research includes two topics: (1) the modeling of periodic preventive maintenance policies over an infi nite time span for repairable systems with the reduction of the degradation rate after performing an imperfect preventive maintenance (PM) activity; (2) the parameter estimation of failure distribution and the restoration effect of PM from the proposed PM policy for deteriorating systems. The concept of the improvement factor method is applied to measure the restoration effect on the degradation rate for a system after each PM. An improvement factor is presented as a function of the system's age and the cost of each PM. A periodic PM model is then developed. The optimal PM interval and the optimal replacement time for the proposed model can be obtained by minimizing the objective functions of the cost rate through the algorithms provided by this research. An example of using Weibull failure distribution is provided to investigate the proposed model. The method is proposed to estimate the parameters of the failure process and the improvement effect after each PM by analyzing maintenance and failure log data. In this method, a PSO-based method is proposed for automatically constructing a fuzzy system with an appropriate number of rules to approach the identifi ed system. In the PSO-based method, each individual in the population is constructed to determine the number of fuzzy rules and the premise part of the fuzzy system, and then the recursive least-squares method is used to determine the consequent part of the fuzzy system constructed by the corresponding individual. Consequently, an individual corresponds to a fuzzy system. Subsequently, a fi tness function is defi ned to guide the searching procedure to select an appropriate fuzzy system with the desired performance. Finally, two identifi cation problems of nonlinear systems are utilized to illustrate the effectiveness of the proposed method for fuzzy modeling.
Źródło:: Eksploatacja i Niezawodność; 2008, 4; 28-34
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: On a systematic approach to development of maintenance plans for production equipment
Autorzy:: Mikler, J.
Frangoudis, C.
Lindberg, B.
Powiązania:: https://bibliotekanauki.pl/articles/99615.pdf
Data publikacji:: 2011
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: reliability
maintenance
RCM
TRIZ
Opis:: Reliability is a collective term covering several abilities of the technical system: to deliver required functions, to uphold quality of products and services, to assure that the safety requirements associated with the system are properly fulfilled with regards both to the users and the environment and finally to uphold the durability of the technical system during its whole life cycle. All this has to be performed at acceptable risks, optimal cost, and correspond to operational needs of the business. Even though there is an advanced, well thought-out concept for this purpose - reliability centred maintenance (RCM) - that correctly applied might result in very good quality maintenance programs, it is not broadly used in the industry due to the vast efforts required for its implementation. An appropriate methodology supporting systematic functional break down of a studied systems, and guidelines how to couple functional failures to failure modes, integrated with RCM, would greatly speed up generating of effective maintenance programs. In this paper we present our research towards development of such a methodology, and show a pilot implementation to analysis of machine tool spindle. The methodology is based on Hubka's theory of design and AFD/TRIZ.
Źródło:: Journal of Machine Engineering; 2011, 11, No. 1-2; 87-101
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: An optimal preventive maintenance policy of parallel-series systems
Autorzy:: Duarte, J. C.
Craveiro, J. T.
Trigo, T. P.
Powiązania:: https://bibliotekanauki.pl/articles/2069373.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: reliability
availability
maintenance optimization
Opis:: This paper presents an algorithm to solve the problem of maintenance management of a two state parallel-series system based on preventive maintenance over the different system components. It is assumed that all components of the system exhibit Weibull hazard function and constant repair rate and that preventive maintenance would bring the system to the as good as new condition. The algorithm calculates the interval of time between preventive maintenance tasks for each component, minimizing the costs, and in such a way that the total downtime, in a certain period of time, does not exceed a predetermined value. It is presented an industrial case study where the algorithm is applied.
Źródło:: Journal of Polish Safety and Reliability Association; 2013, 4, 1; 29--34
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Computer aided maintenance management of electronic equipment used in transport
Autorzy:: Siergiejczyk, M.
Rosiński, A.
Powiązania:: https://bibliotekanauki.pl/articles/359677.pdf
Data publikacji:: 2013
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: maintenance
reliability
routine inspections
Opis:: Electronic equipment used in transport operates under various conditions. Due to characteristic nature of their application, they should be highly reliable. This paper presents a methodology of optimising a bistable operation process of those systems factoring in economic factors, i.e. the funding allocated to routine inspections. Its practical application was also discussed, which would entail computer aided maintenance software.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 33 (105); 100-105
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Implementation of RCM theory in air operations
Autorzy:: Bugaj, M.
Powiązania:: https://bibliotekanauki.pl/articles/393850.pdf
Data publikacji:: 2011
Wydawca:: Polskie Stowarzyszenie Telematyki Transportu
Tematy:: konserwacja
awarie
niezawodność
maintenance
reliability
failure
Opis:: Reliability-Centred Maintenance (RCM) implementation provides measures that signify progress towards implementing an RCM based maintenance program. Using numbers identified during the Analysis Phase as a basis, the metrics concentrate on the number and percentage of each category (new task, modified task, cancellation of specified old program tasks, design modifications, operational procedure changes, etc., that have actually been implemented. Implementation will (or should) usually begin during the Analysis Phase of an RCM project, and may provide information for improvement of the analysis. Implementation involves many activities, such as: Identification of resources (money, time, manpower), Coordination with governing authorities or other parties affected, Procedure writing, walk down and approval, Procurement of special tools, parts and consumables needed to carry out the procedures mandated under the new program, Training or at least orientation on the new procedures for those who are to perform them, Planning and scheduling of new RCM based procedures, Actual execution the first time on the asset that was subject of the RCM Project.
Źródło:: Archives of Transport System Telematics; 2011, 4, 1; 13-17
1899-8208
Pojawia się w:: Archives of Transport System Telematics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Reliability analysis of forest machines due to FMEA method
Autorzy:: Ťavoda, P.
Kováč, J.
Łukaszczyk, Z. Ł.
Powiązania:: https://bibliotekanauki.pl/articles/409738.pdf
Data publikacji:: 2018
Wydawca:: STE GROUP
Tematy:: reliability
FMEA method
forest machines
maintenance
Opis:: The article deals with the research of operational reliability of forest felling machines with the method FMEA (Failure Mode and Effect Analysis) and its implementation for observed machines in the organization. Forwarders 810D by John Deere were chosen for this research. The research was realized in real operational conditions. Application of the FMEA method allows flexibility in case of unexpected situations and optimization of human potential abilities. FMEA tool is a tool preventing outages operational reliability and preventive tool for ensuring the maintenance of facilities. This paper explores and verifies the operational reliability theory in practical real-world conditions, resulting in a reduction in operating (variable) costs, minimization of failures and readiness and increased performance of observed machines.
Źródło:: Management Systems in Production Engineering; 2018, 4 (26); 200-206
2299-0461
Pojawia się w:: Management Systems in Production Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: A data driven decision making approach for long-wall mining production enhancement
Autorzy:: Morshedlou, A.
Dehghani, H.
Hoseinie, S. H.
Powiązania:: https://bibliotekanauki.pl/articles/88911.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:: longwall system
reliability
maintenance
production risk
Opis:: Machine failures have destructive effects on continuity of operation and lead to production losses in long-wall mines, making proper maintenance scheduling essential. This paper models the reliability of the whole production chain in an Iranian long-wall mine including the drum shearer, Armored Face Conveyor (AFC), hydraulic powered supports, Beam Stage Loader (BSL), and main conveyer belt. Analyzing the computational results and failure frequencies, we rank the critical components and develop a reliability-based preventive maintenance schedule for all equipment. In respect to the data classification, conveyor belt with failure abundance of 41.5 percent is the most critical, while powered supports with the failure abundance of 1.2 percent shows the best performance. Approximately, the reliability of the production process after four hours reaches nearly to zero. Implementing the schedule, computational results suggest an increase of approximately 67.7 percent in the average production per shift.
Źródło:: Mining Science; 2019, 26; 7-20
2300-9586
2353-5423
Pojawia się w:: Mining Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Life cycle costing used for justifying transition to predictive maintenance strategies
Autorzy:: Mikler, J.
Powiązania:: https://bibliotekanauki.pl/articles/99511.pdf
Data publikacji:: 2011
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: reliability
life cycle costing
predictive maintenance
Opis:: As the market imposes constantly increasing levels of reliability and availability of production equipment, it is necessary to shift the focus of maintenance toward predictive strategies. However, as any other investment, implementation of the required condition monitoring systems has to be cost justified. This paper presents a case study showing use of LCC calculations to assess changes of maintenance strategy for a CNC machining centre. It was proven that replacing reactive maintenance tasks with simple condition monitoring and preventive activities results in lower whole life cycle cost of the analysed machining centre.
Źródło:: Journal of Machine Engineering; 2011, 11, 4; 49-58
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Maintenance system of semi-trailer and risk priority number
Autorzy:: Gallikova, Jana
Barta, Dalibor
Caban, Jacek
Powiązania:: https://bibliotekanauki.pl/articles/263110.pdf
Data publikacji:: 2019
Wydawca:: Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:: maintenance
FMEA
risk priority number
reliability
Opis:: The new maintenance system of semi-trailer combination as a most used road freight transport means is the subject of interest in this article. The real experiences from practice and creation of the FMEA analysis of the system using software support are the basis of wear and damage analysis of air brake system components used on the semi-trailer combination. The desire to improve market position of the company, customer satisfaction, but also the product specifications, government regulatory requirements, agency recommendations, and legal implications are the grounds for continuous improvement of the product quality, reliability and safety. These reasons push the product manufacturers to perform risk analyses, which helps them identify and minimize system failures during the life cycle of product. One of the risk analysis techniques recommended by international standards to identify possible failure causes is the FMEA methodology. It helps to locate the failures and reduce their consequences, so that the intended function of the machine is fulfilled. In this paper was presented the wear and damage analysis of individual components of air brake system and creating of the FMECA analysis for semi-trailer combination. Base on them, new methods to detect failures of components of air systems, preventive measures and set up of a new planned preventive maintenance system for air brakes was designed. The cost of the proposed maintenance system is 2.2 times higher than the cost of the current maintenance system, but it minimizes the failures and their consequences (traffic accidents).
Źródło:: Archiwum Motoryzacji; 2019, 86, 4; 101-109
1234-754X
2084-476X
Pojawia się w:: Archiwum Motoryzacji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

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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