Temat: Maintenance - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Testing the integrated package of tools supporting decision making on identification, prediction and optimization of complex technical systems operation, reliability and safety. Part 6. IS&RDSS Application – Exemplary system operation cost analysis and maintenance optimization
Autorzy:: Kołowrocki, K.
Soszyńska-Budny, J.
Xie, M.
Powiązania:: https://bibliotekanauki.pl/articles/2069548.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: operation cost
complex systems
corrective maintenance
preventive maintenance
Opis:: The way of operation cost analysis of the complex technical system at the variable operation conditions and its application to the evaluation of the cost before and after the exemplary system operation process optimization is presented. The methods of corrective and preventive maintenance policy maximizing availability and minimizing renovation cost of the complex technical systems in variable operation conditions are presented and applied to the exemplary system.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 2; 435--444
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Maintenance cost study for deteriorating systems : age-replacement policy vs. condition-based maintenance policy
Autorzy:: Bouvard, K.
Artus, S.
Bérenguer, C.
Cocquempot, V.
Powiązania:: https://bibliotekanauki.pl/articles/2069558.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: maintenance cost
degradation model
age-replacement
condition-based maintenance
Opis:: This paper deals with the maintenance cost of deteriorating systems. Two maintenance strategies are studied: age-replacement and condition-based maintenance. To compare these two policies, degradation models are used: these models characterize the degradation level but also the system time-to-failure. In order to compute the optimal condition-based maintenance cost, we suppose that the main influencing sources are the preventive threshold, the inspection frequency and the inspection cost. Numerical examples illustrate the maintenance cost computation and compare the optimal costs of both policies.
Źródło:: Journal of Polish Safety and Reliability Association; 2008, 1; 85--92
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

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

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Preventive maintenance with imperfect repairs of a system with redundant objects
Autorzy:: Okulewicz, J.
Salamonowicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/2069709.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: preventive maintenance
imperfect repair
statistical diagnosis
redundancy
Opis:: An object ability to realise tasks may be restored by repairing only failed components. This is called imperfect repair as the object 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 system. Sets of objects’ components which should be replaced are derived on a basis of statistical diagnosing with use of data about components failures. The acceptable level of a failure risk while executing transportation tasks has been taken as a criterion of choosing elements to be replaced. An algorithm of selecting components for preventive replacement has been developed. It was shown that a level of a system reliability can be controlled by changing an order of a quantile function in coordination and a number of redundant objects. A computer simulation model of the system was used to illustrate derived dependencies.
Źródło:: Journal of Polish Safety and Reliability Association; 2008, 2; 279--286
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Probabilistic evaluation of deterioration processes with maintenance activities
Autorzy:: Sugier, J.
Anders, G. J.
Powiązania:: https://bibliotekanauki.pl/articles/2069615.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: deterioration modelling
probabilistic methods
maintenance policy
risk assessment
Opis:: Reliable operation of contemporary complex systems depends on selecting efficient maintenance policy, which often must take into account not only the reliability, but also economic factors. In this work, we present an approach which allows evaluation of various possible maintenance scenarios with respect to these two areas. The method is based on the concept of a life curve and discounted cost used to study the effect of equipment aging under different maintenance strategies. The deterioration process is first described by a Markov model and then its various characteristics are used to develop the equipment life curve and to quantify other reliability parameters. Based on these data, effects of various “what-if” maintenance scenarios can be examined and their efficiency compared. Simple life curves are combined to model equipment deterioration undergoing diverse maintenance actions, while computing other parameters of the model allows evaluation of additional critical factors, such as probability of equipment failure. Additionally, the paper deals with the problem of the model adjustment so that the computed frequencies are close to the historical values, which is very important in practical applications of the method.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 1; 177--184
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: An extended risk based inspection methodology
Autorzy:: Selvik, J. T.
Scarf, P.
Aven, T.
Powiązania:: https://bibliotekanauki.pl/articles/2069644.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: maintenance planning
risk based inspection
risk
uncertainty factors
Opis:: Risk based inspection (RBI) is a methodology commonly used in planning of inspections for static mechanical equipment, in particular piping networks. The inspections are prioritized based on risk, expressed as expected values, integrating the likelihood and consequences of failures. In this paper we suggest an extension of the RBI methodology which reflects risk and uncertainties beyond expected values. We argue that such an extension is essential for adequately supporting the inspection planning. A pipeline example from the Norwegian oil and gas industry is presented to illustrate and discuss the suggested approach.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 1; 221--230
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Semi-Markov processes: application in system reliability and maintenance
Autorzy:: Grabski, F.
Powiązania:: https://bibliotekanauki.pl/articles/2069404.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: reliability
maintenance
semi-Markov process
semi-Markov perturbed processes
Opis:: The author’s monograph “Semi-Markov Processes: Application in System Reliability and Maintenance” which will be published by Elsevier in 2014 is presented. The paper is composed of an introduction, the monograph contents, conclusions and the references the monograph contents is based on.
Źródło:: Journal of Polish Safety and Reliability Association; 2014, 5, 1; 57--62
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Optimisation of the preventive maintenance plan of a series components system with Weibull hazard function
Autorzy:: Duarte, J. C.
Soares, C. G.
Powiązania:: https://bibliotekanauki.pl/articles/2069578.pdf
Data publikacji:: 2007
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: availability
hazard function
Weibull distribution
preventive maintenance
series components
Opis:: In this paper we propose an algorithm to calculate the optimum frequency to perform preventive maintenance in equipment that exhibits Weibull hazard function and constant repair rate in order to ensure its availability. Based on this algorithm we have developed another one to solve the problem of maintenance management of a series system based on preventive maintenance over the different system components. We assume that all components of the system still 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 actions 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.
Źródło:: Journal of Polish Safety and Reliability Association; 2007, 1; 67--73
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Models of logistic support systems
Autorzy:: Nowakowski, T.
Werbińska-Wojciechowska, S.
Powiązania:: https://bibliotekanauki.pl/articles/2069667.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: logistic support system
maintenance modelling
inventory models
procurement process
Opis:: We present an overview of some recent developments in the area of inventory planning and maintenance scheduling issues. The emphasis is on spare part inventory models, which authors divided into four main groups of models: models of optimal spare part inventory policy for system under PM, number of spare parts optimization models, storage reliability models, multi-echelon systems models. Later, in the paper there is considered the time dependent system of systems where the system total task must be executed during the constrained time resource. There is used the simulation approach to investigate the influence of parameters of the procurement process (order quantity, critical inventory level, lead-time length) on the system of systems behavior.
Źródło:: Journal of Polish Safety and Reliability Association; 2009, 2; 325--344
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Stochastic ageing models : extensions of the classic renewal theory
Autorzy:: Briš, R.
Powiązania:: https://bibliotekanauki.pl/articles/2069585.pdf
Data publikacji:: 2007
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: renewal theory
alternating renewal theory
maintenance processes
ageing
unavailability coefficient
Opis:: Exact knowledge of the reliability characteristics as the time dependent unavailability coefficient for example, under influence of different ageing processes as well as under different failure types is very useful to the practitioners who have to find the optimal maintenance policy for their equipment. In this paper found models and their solutions have potential to face the optimisation task under the conflicting issues of safety and economics. Most of the solved models take into account ageing processes. An increasing tendency lately exists to include aging effects into the risk assessment models to evaluate its contribution. We developed different renewal models taking into account different ageing distributions of failures (Weibull, Erlang, log-normal): models with negligible renewal time, models with periodical preventive maintenance, alternating renewal process with lognormal distribution of failure time, and with two types of failures.
Źródło:: Journal of Polish Safety and Reliability Association; 2007, 1; 29--38
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: Maintenance problems of technical systems composed of heterogeneous elements
Autorzy:: Jodejko, A.
Powiązania:: https://bibliotekanauki.pl/articles/2069556.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: multi-unit system
heterogeneous system
block maintenance policy
economic dependency
Opis:: The paper gives a short insight into the complexity of maintenance problems of a system composed of heterogeneous elements. The article proposes a simple algorithm to define parameters of block maintenance policy of multi-unit systems composed of elements with economic dependency. The procedure may be used especially in the case when elements of a system are not identical in the sense of their probability characteristics and analytical solution is inaccessible.
Źródło:: Journal of Polish Safety and Reliability Association; 2008, 1; 187--193
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Application of analytic hierarchy process and TOPSIS methodology on ships’ maintenance strategies
Autorzy:: Diagkinis, I.
Nikitakos, N.
Powiązania:: https://bibliotekanauki.pl/articles/2069349.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: ships’ equipments maintenance strategies
ship safety
AHP
analytical hierarchy process
TOPSIS
Opis:: The aim in adoption of maritime equipments’ maintenance strategy is the reduction of risk in order to achieve safer navigation, to enhance environmental friendly behaviors, to increase the safety and positively contribute to the overall operability management of the ship. The use of weak maintenance strategy could result in waste of time, money and resources, and often has no effect on improving or maintaining the availability of equipments. In this article, we propose a model in evaluation of on non-deterministic factors that affect the ships’ safety and a framework for ships management governance. The review of maintenance strategies has proven that a decision support mechanism needs mainly multiple criteria decision on ship equipments maintenance strategy selection. Through Analytic Hierarchy Process methodology and the extended evaluation of results on adoption of Technique for Order Preference by Similarity to Ideal Solution a useful tool to prioritize needs at any level and includes the decisions that should be taken into consideration from the shore office managers and the ship personnel for the safe functionality of the ship is provided.
Źródło:: Journal of Polish Safety and Reliability Association; 2013, 4, 1; 21--28
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

Tytuł:: Safety and reliability models of time-dependent systems
Autorzy:: Babczyński, T.
Kowalski, M.
Łukowicz, M.
Magott, J.
Skrobanek, P.
Powiązania:: https://bibliotekanauki.pl/articles/2069500.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: dynamic reliability
maintenance process
fault tree with time dependencies
activity diagram
Opis:: The paper concerns models with time dependencies that can be used in modelling dynamic reliability and complex maintenance processes. Emphasis is put on models that have been elaborated with authors participation. The following models are presented: fault trees with time dependencies, probabilistic fault trees with time dependencies, reliability enhanced activity diagrams. The above models are illustrated by examples. Both types of fault trees are used in modelling the time coordination of distance protections in high voltage transmission line. Then reliability enhanced activity diagrams that express the maintenance process of computer system with redundant components. Components are submitted to failures and repairs.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 1; 11--22
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

Tytuł:: On the mathematical condition-based maintenance modelling for continuously deteriorating systems
Autorzy:: Bérenguer, C.
Powiązania:: https://bibliotekanauki.pl/articles/2069561.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: condition-based maintenance
continuous deterioration
stochastic modelling
Gamma process
semi-regeneration
Opis:: This paper presents a modelling framework of condition-based maintenance policies for continuously deteriorating systems, based on semi-regenerative stochastic techniques.
Źródło:: Journal of Polish Safety and Reliability Association; 2008, 1; 41--52
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 15.

Tytuł:: A Degradation-Threshold-Shock model for a system. The case of dependent causes of failure in finite-time
Autorzy:: Caballé, N. C.
Castro, I. T.
Powiązania:: https://bibliotekanauki.pl/articles/2069176.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: condition-based maintenance
degradation-threshold-shock models
finite-time analysis
gamma process
Opis:: This paper deals with a condition-based maintenance strategy (CBM) in finite-time horizon for a system subject to two different causes of failure, internal degradation and sudden shocks. Internal degradation is modelled under a gamma process and sudden shocks arrive at the system following a non-homogeneous Poisson process (NHPP). Both causes of failure are considered as dependent. When a sudden shock takes places, the system fails. In addition, the system is regarded to fail when the deterioration level reaches a critical threshold. Under this functioning scheme, a CBM strategy is developed for controlling the reliability of the system. Traditionally, this strategy is developed under an asymptotic approach. Hence, considering an infinite-time horizon is not always possible. In this paper, we analyse a CBM strategy under a finite-time horizon developing a recursive method which estimates the expected cost rate based on numerical integration and Monte Carlo simulation. A numerical example is provided in order to illustrate this complex maintenance model.
Źródło:: Journal of Polish Safety and Reliability Association; 2016, 7, 1; 13--20
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Maintenance" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język