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Wyświetlanie 1-15 z 32
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
Artykuł
Tytuł:
Method of the assessment of the river craft technical condition on the basis of the microstatistics
Autorzy:
Arefyev, I.B.
Volovik, А. V.
Klavdiev, A.
Powiązania:
https://bibliotekanauki.pl/articles/359830.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
reliability
navigation
weather
river boat
operation
Opis:
One of the major problems of transport systems is the movement organization without catastrophes. It is particularly important for the rolling stock of the river fleet. In this paper, the authors propose the evaluation method of the technical condition of inland waterway vessels on the statistics of accidents and disasters of previous navigation. The method is based on the statistics for the “small samples”.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 37 (109); 5-9
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Niezawodność operacyjna systemów transportowych
Operating Reliability of Transport Systems
Autorzy:
Jaźwiński, J.
Smalko, Z.
Żurek, J.
Powiązania:
https://bibliotekanauki.pl/articles/359369.pdf
Data publikacji:
2004
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
niezawodność
niezawodność operacyjna
wskaźnik korelacji
prawdopodobieństwo retrospekcyjne
EXPLO-SHIP 2004
reliability
operating reliability
correlation rate
retrospective probability
Opis:
Analizowano system transportowy charakteryzowany niezawodnością, rozumianą jako prawdopodobieństwo niewystąpienia uszkodzenia oraz niezawodnością operacyjną rozumianą jako prawdopodobieństwo wykonania zadania. Rozważono relacje zachodzące pomiędzy wymienionymi miarami niezawodności w układzie "człowiek - obiekt - środowisko". Podano przykłady obliczeniowe i sformułowano wnioski.
This work deals with a transport system characterized by reliability understood as the probability of non-occurrence of failure and operating reliability understood as the probability of task execution. Relations between the above mentioned reliability measures in the man-object-environment system are taken into consideration. Some computational examples are presented and conclusions formulated.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 1 (73); 243-254
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fault Tree Analysis as a tool for modelling the marine main engine reliability structure
Autorzy:
Laskowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/135108.pdf
Data publikacji:
2015
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
Fault Tree Analysis (FTA)
main engine
reliability
weak link
Reliability Block Diagram (RBD)
qualitative analysis
minimal cut sets
Opis:
The introduction to the Fault Tree Analysis has been presented in this article. Selected publications on the Fault Tree Analysis have been listed. The usefulness of the method in marine engineering application has been indicated. Reliability testing facility has been presented, that is typical two-stroke, slow-speed ship crosshead Diesel engine intended to power the ship. The way of creating system model with the Fault Tree Analysis application has been presented. Reliability structure of tested engine has been modelled using Reliability Block Diagrams, as well as the Fault Tree Analysis. Main tree describing the object reliability structure analysis and the sub-tree structure modelling crank system, subsystem of the cam shaft, cylinder exemplary system and turbocharger have been built. Qualitative analysis of the tree has been conducted – the minimal cut sets of the system has been determined. The directions for further research have been indicated.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 41 (113); 71-77
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the efficiency and reliability of material flow in buffered systems
Autorzy:
Michlowicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/135174.pdf
Data publikacji:
2015
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
material flow
continuity
reliability
capacitive element
lean
TPM
Opis:
The continuity of the flow of materials needed for correct operation of manufacturing systems can be achieved using different means and control methods. From the perspective of the technical infrastructure, it is important to ensure high reliability of machines, devices, and whole manufacturing lines. These objectives can be achieved through the use of Total Productive Maintenance (TPM). Specific effects can also be achieved by using additional capacitive elements in device systems (manufacturing lines). The focus of this study is limited mainly to continuous flow systems such as complex material flow systems in power plants or mineral pre-processing plants.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 42 (114); 26-32
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podstawy budowy modelu niezawodnościowego elementów nośnych konstrukcji oceanotechnicznych
Basis of reliability model for offshore structures bearings
Autorzy:
Rosochacki, W.
Powiązania:
https://bibliotekanauki.pl/articles/359212.pdf
Data publikacji:
2009
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
niezawodność
modelowanie
konstrukcje okrętowe
reliability
modeling
offshore structures
Opis:
W artykule podjęto temat podstaw budowy matematycznego modelu niezawodności elementów nośnych konstrukcji okrętowych probabilistycznie jednorodnych. W modelu uwzględniono trzy typy uszkodzeń: trwałe odkształcenie plastyczne, pęknięcia zmęczeniowe oraz utratę stateczności lokalnej. W szczególności zaproponowano i określono cechy i granice obszarów zdatności. Proponowany model uwzględnia zmiany właściwości elementu jako skutku działania obciążeń cyklicznych.
The paper describes basis of the model for reliability analysis of probabilistically homogenous offshore structures bearings. Three types of damages were considered: permanent plastic strain, fatigue crack and local instability. Specifically, features and limits of ability areas were proposed and determined. In this article was also investigated the influence of variation of element properties as an effect of cyclic loading action.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2009, 19 (91); 92-96
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Port oil terminal reliability optimization
Autorzy:
Magryta, Beata
Kołowrocki, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/134958.pdf
Data publikacji:
2020
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
critical infrastructure
operation
optimization
port oil terminal
reliability
resilience
Opis:
A method for reliability optimization, which is relevant for critical infrastructure activity governed by operational processes, is presented and applied to a port oil terminal. The optimal values for the reliability and resilience indicators related to the operation, are determined for this critical type of infrastructure. Simple suggestions regarding optimized infrastructural operation strategies are formulated and implemented towards reorganizing the port oil terminal processes in order to maximize its lifetime in defined reliability states.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 62 (134); 161-167
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of ship structure reliability during design, maintenance, and repair phases
Autorzy:
Kerdabadi, M. S.
Sakaki, A.
Izadi, A.
Powiązania:
https://bibliotekanauki.pl/articles/135070.pdf
Data publikacji:
2018
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
reliability evaluation
structure strength
hull-girder
corrosion
probabilistic analysis
Opis:
In the present study, the reliability evaluation application during design, maintenance and repair phases have been investigated for the girder of a ship’s hull. The objective of the project was to develop reliability-based methods which are to be used for the design of ship structures, in particular by the calibration of the safety factors in the design rules. In order to evaluate the structural strength, the extended model of the ultimate limit state of the hull-girder, regarding corrosion and fatigue defects, has been used based using a time-dependent probabilistic analysis. Time-dependent reliability has been evaluated using the required minimum elastic section modulus; in the case of fatigue in a ship’s deck this process has been done using mechanical fracture and the S-N curve. The results from the reliability evaluation using the Monte-Carlo simulation method and First-order reliability methods (FORM), indicated that these two methods agreed well. Analysis of the corrosion defect reliability showed a decrease of the structure’s reliability during its lifetime; hence it is possible to use the reliability criteria in the design phase in order to achieve a better perception of the structure’s operation during its lifetime with regard to environmental conditions. A comparison between the fatigue analysis results showed that the fracture mechanics method gave more conservative results compared to the S-N curve method, because of the way it considers early crack size.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 53 (125); 19-27
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected issues of reliability and availability in marine vessel fire alarm systems
Autorzy:
Bistrović, Miroslav
Powiązania:
https://bibliotekanauki.pl/articles/135156.pdf
Data publikacji:
2019
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
reliability
safety
protection
availability
fire alarm system
human factor
Opis:
Today, every industry is striving for the highest efficiency and best economic results possible, with the greatest possible competitiveness. But in maritime affairs, human safety and environmental protection are the foundations of sustainability. To achieve this, marine systems must be reliable, high quality and easy to maintain. Because of this, reliability has become an important factor in safety, which remains relevant throughout the lifetimes of ship systems, including fire alarm systems. In this paper we address a number of issues connected with the reliability – and ‘availability’ of these systems. Firstly, ship fire alarm systems consist of various components whose individual reliability affect the system’s overall reliability. Discussions of reliability in ship fire alarm systems normally focus on the length of a system’s useful life or performance during design-based fire events. In addition to the reliability of systems, their availability for use is also crucial given the possibility that the system may need to operate at any point in time.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 60 (132); 177-183
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of experimental research on the durability and reliability of mining equipment
Autorzy:
Biały, W.
Powiązania:
https://bibliotekanauki.pl/articles/359457.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
maintenance
reliability
methods of measurement
experimental research
measuring device
Opis:
Due to special conditions of functioning of machinery and devices used in coal mining, the process of its selection is important and should comprise variability of working conditions. A short review of methods of assessment of coal workability used as yet was done and the results were divided into groups. Significance of measurements and assessment of mechanical characteristics (including workability) is proven by worldwide in scientific centres by numerous elaborated methods of its assessment. In the article new devices used in determining and assessing mechanical characteristics of coal that significantly influence durability and reliability of mining machinery were described.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 34 (106); 27-34
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metodika i rezyltaty rasceta naprazenno-deformirovannogo sostoania raspylitelej dvigatelej CH 40/46 s ucetom osobennostej ih konstrukcii
Methodology and results of tensed-deformed condition calculations results of CH 40/46 engine atomizers considering their design specifics
Autorzy:
Klyus, O.
Puhov, V.
Powiązania:
https://bibliotekanauki.pl/articles/360225.pdf
Data publikacji:
2008
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
atomizer
reliability
nozzle needle seizure
deformations
tense-deformed condition
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2008, 14 (86); 30-33
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability analysis of a system subjected to two-state operation process
Autorzy:
Kuligowska, E.
Powiązania:
https://bibliotekanauki.pl/articles/358995.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
reliability analysis
simulation methods
operation states
semi-Markov process
modeling
Opis:
The paper presents analytical and Monte Carlo simulation methods applied to the reliability evaluation of a system operating at two different operation states. A semi-Markov process is applied to construct the system operation model and its main characteristics are determined. Analytical linking of this operation model with the system reliability model is proposed to get a general reliability model of the system operating at two varying operation conditions and to find its reliability characteristics. The application of Monte Carlo simulation based on this general model to the reliability evaluation of this system is proposed as well. The results obtained from those two considered methods are evaluated.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 1; 100-104
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Guidelines for the coordinated enhancement of the maritime position, navigation and time data system
Autorzy:
Engler, E.
Hoppe, M.
Ritterbusch, J.
Ehlers, T.
Becker, C.
Ehrke, K.-C.
Callsen-Bracker, H.
Powiązania:
https://bibliotekanauki.pl/articles/135132.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
standardized PNT data products
guidelines
requirements
scalability
integrity
reliability
resilience
Opis:
Reliable knowledge of a ship’s position and movement in relation to other traffic participants and obstacles is a fundamental requirement for navigation and avoiding collisions and groundings. Consequently, the onboard provision of resilient position, navigation and time data (PNT) is emphasized by the International Maritime Organization’s (IMO) e-navigation strategy, solution S3 “Improved reliability, resilience and integrity of bridge equipment and navigation information” and by the assigned risk control option RCO5 “Improved reliability and resilience of onboard PNT systems”. An initial step towards resilient PNT has been realized by the maritime community with the development of the performance standards for shipborne multi-system radionavigation receiver equipment (MRR). This MRR performance standard (PS) supports the full use of data coming from current and future radionavigation systems and services. Consequently, the combined use of several global navigation satellite systems (GNSS) and the additional use of space based augmentation systems (SBAS) as well as optional terrestrial radionavigation systems (e.g. eLoran or R-Mode) will be supported to increase the performance of positioning and timing. As a second step, the development of guidelines for an onboard PNT (data processing) unit has been identified as supplementary and necessary. The starting point is the onboard use of a combination of GNSS receivers and autarkic systems (e.g. radar, gyro, echosounders with bathymetric data) for a comprehensive provision of required PNT data. Redundancy in the available data enables the application of integrity monitoring functions to evaluate the current usability of safety-critical data and components. The aim of the guidelines is the specification of data processing rules towards the resilient provision of standardized PNT data and integrity information. For this purpose, a modular architecture for an onboard PNT system is introduced and scaled to the need for data input as well as the performance of data output.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 44-53
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability, availability, and maintainability analysis of the propulsion system of a fleet
Autorzy:
Bayraktar, Murat
Nuran, Mustafa
Powiązania:
https://bibliotekanauki.pl/articles/24202522.pdf
Data publikacji:
2022
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
ship propulsion system
reliability
availability
maintainability
RWB software
RAM analysis
Opis:
New systems are produced and developed to meet specific needs, and their reliability is the most important issue. In the maritime industry, evaluating failures in a ship’s propulsion system results in high costs and the loss of prestige for the company. Land/sea fleet employees need to detect and minimize the failures that may occur in ship propulsion systems in advance to ensure the continuity of the ships’ operations. In this study, the recorded failure data of four different ships belonging to a fleet in the last 10 years are used. Failures were examined as a whole since the ships have similar propulsion systems. The obtained failure data were grouped, and the average time to fix the failures was determined by the chief engineer and made suitable for reliability, availability, and maintainability (RAM) analysis. A suitable model was created for grouped failures by Isograph’s RWB software. As a result of the analysis of the propulsion system and its subsystems, the main engine of the ship was shown to have the best reliability. Furthermore, the most important components were the cylinders of the main engine as subsystems. This study highlights the components that are important to the reliability of a propulsion system. Thanks to the RAM analysis, improvements can be pinpointed on a ship’s propulsion system, which will increase the operations of the maritime industry. Reducing failures will further increase the confidence in maritime transport and strengthen its place among the modes of transportation. This study provides a valuable resource for academicians, experts, as well as companies working on reliability, availability, and maintainability in the future.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 70 (142); 63--70
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis of practices of monitoring the accuracy and reliability of compasses on modern merchant ships
Autorzy:
Lushnikov, E.
Pleskacz, K.
Powiązania:
https://bibliotekanauki.pl/articles/135629.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
magnetic compass
gyrocompass monitoring
compass indication monitoring
international regulations
accuracy
reliability
Opis:
This article examines the current state of practices concerning the monitoring of the accuracy and reliability of compasses on modern ships in the global fleet. The author analyzes personally detected, bizarre, but commonly used practices that may indirectly lead to hazards to human life, and impose a serious risk of marine environmental pollution. The author indicates probable reasons for the present state, and proposes directions, resources and methods for rectifying the situation. The problems presented, which represent the results of a broad study, call for decisive solutions in such areas as technology, education, law, and morality.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 174-180
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 32

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