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Tytuł:
Risk management in the process of personnel allocation to jobs
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/973047.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
risk management
work organization
multi-station work
linear programming
zarządzanie ryzykiem
zarządzanie bezpieczeństwem
organizacja pracy
programowanie liniowe
alokacja personelu
Opis:
The strategy should be designed in such a way as the risk management can operate not only as a system for avoiding losses, but also risk management should allow recognizing and making use of occasions and create new opportunities for the organization. Risk management includes both an evaluation (analytical and evaluation) undertaking as well as planning and control activities aimed at minimizing (reducing) risk or maintaining it at an acceptable level. Security management can in particular be reduced to the issue of risk management, because risk is a quantitative expression of the functioning of systems in an environment where there are active sources of threats to system security. The article presents the problem of personnel allocation in hazardous conditions, emphasizing the possibilities of undertaking optimization actions in the safety management process. A mathematical model was formulated for this issue. An algorithm solving the problem of personnel allocation is presented. The proposed analysis is the starting point for determining the risk when using multi-station work.
Źródło:
System Safety : Human - Technical Facility - Environment; 2020, 2, 1; 82-99
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manufacturing capacity management by using modern simulation tools
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/1830792.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
computer simulation
production processes
FlexSim
improvement
symulacja komputerowa
procesy produkcyjne
doskonalenie
Opis:
Determining the parameters of the production system as well as the choice of the type of manufactured elements flow shall appoint the level of effectiveness of the manufacturing process. The article presents an example of implementation the simulation verification process of the production flow, taking into account system constraints. The basic stages of developing a simulation model in this process are discussed, taking into account the necessary information and input data. The results show the impact of the application selected flow scenarios on the level of generated costs and the duration of the manufacturing process. The process of assessing individual variants of the organization production was performed on the basis of the results obtained by computer simulation in the FlexSim simulation software.
Źródło:
System Safety : Human - Technical Facility - Environment; 2021, 3, 1; 129-138
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digital twin of slewing roller bearings operating in wind turbine structures
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/24202544.pdf
Data publikacji:
2022
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
wind turbines
quality
slewing bearings
digital twin
FEM
Industry 4.0
Opis:
A digital twin is a digital replica, a mathematical model of a given object, product, process, system, or service. A digital twin enables the attainment of a significant amount of data and it can be used to gain comprehensive knowledge about a given object, its behaviors, and reactions. The constant ability to monitor the product and its reactions contribute to its improvement and the exclusion of errors, as well as its optimization, which in turn allows for a more perfect product. This article presents a model of a digital twin for the analysis of the operation of a slewing bearing in the structure of a wind turbine. The quality of the bearing is directly related to the quality of the materials from which they were made, the process of thermo-chemical treatment, and the accuracy of all its elements, as well as its proper assembly. The bearings are characterized by very narrow tolerances. Errors in the shape of cylindricity cause distortion of the bearing raceway, stress accumulation, and jamming of rolling parts. This leads to rapid bearing wear as a result. The condition for the approval of bearings for sale is the successful passing of all tests, both geometric and strength. This is to develop quality standards that bearing suppliers must meet. The article presents an analysis of the load distribution that prevail in rotor blade bearings at the limit loads of a wind turbine. The basic types of the most commonly used coronary bearings for wind turbine applications were considered. A methodology for constructing computational models of slewing bearings, using the finite element method, was developed. An original way of simulating rolling parts with rod elements – for rollers and superelements – for the support balls was proposed. A numerical FEM model of a slewing bearing with a wind turbine rotor hub is presented. The calculations accounted for the susceptibility of the bearing rings and hub, as well as the stiffness of the mounting screws. Areas of bearing raceways, where rolling parts achieve the greatest loads, have been identified. Demonstrated by diagrams are the deformations of the rotor hub seats and bearing rings.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 71 (143); 64--71
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Management optimizing the costs and duration time of the process in the production system
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/23965490.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
zarządzanie kosztami
zarządzanie produkcją
symulacja
Flexsim
cost management
production management
simulation
Opis:
This article proposes a method to support decision making from a cost management perspective in the initial tage of production planning. In a research analyzed the problem of selecting production re-sources for order realization. The research was based on computer simulation. The developed model focuses on the planning of the production process in the event that the products have not yet been produced and it is necessary to decide where to produce it (with what production resources) so that the total production costs are as low as possible. In this concept, the FlexSim simulation environment with a built-in optimization module was used to solve the problem. The basic steps of simulation model built were discussed, taking into account the necessary information and input data. The results show the impact of the application of selected simulation scenarios on the level of use of production re-sources, due to the minimization of the total production costs and the duration time of the production process.
Źródło:
Production Engineering Archives; 2021, 27, 3; 163--170
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the impact of effective time management on workstation efficiency using a multi-criteria optimization approach
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/27315561.pdf
Data publikacji:
2023
Wydawca:
STE GROUP
Tematy:
process management
simulation
FlexSim
optimization
Opis:
The aim of the article is to analyze the impact of effective time management on the performance of workstations in the context of the conflict between maximizing workstation utilization and minimizing the number of items waiting in the queue. The article utilized the FlexSim program to build a simulation model of the workstation and conducted optimization using the built-in optimizer. The research demonstrated that effective time management has a positive impact on workstation performance by reducing the number of items waiting in the queue, leading to increased throughput and reduced delays in production processes. An important aspect of the analysis was the application of a multi-criteria optimization approach, which allowed for achieving a balance between maximizing workstation utilization and minimizing the number of items waiting. Multi-criteria optimization considers diverse goals and decision criteria, leading to a more comprehensive approach to optimizing production processes. As a result, effective time management on workstations, based on analysis and multi-criteria optimization, can significantly improve the efficiency and performance of production processes. This analysis can be a valuable tool for organizations seeking to optimize their processes and achieve a competitive advantage in the market. The analysis conducted in the article confirms that effective time management has a beneficial impact on workstation performance. The use of a multi-criteria approach in optimization enables achieving a balance between various decision factors. The presented simulation model and research results can be useful for decision-makers in the manufacturing field who aim to make more informed decisions regarding planning and optimizing production processes to enhance efficiency, effectiveness, and customer satisfaction.
Źródło:
Management Systems in Production Engineering; 2023, 3 (31); 306--311
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Predictive management in the context of industry 4.0
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/34670889.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
operation
maintenance management
predictive maintenance
Industry 4.0
eksploatacja
zarządzanie utrzymaniem ruchu
konserwacja predykcyjna
Opis:
The article presents information on the potential of Industry 4.0 in the field of maintenance. This work explores the potential and trends of predictive maintenance management in an industrial big data environment. The development of predictive maintenance, its technical challenges and in the context of Industry 4.0 was presented. In addition, a case study that illustrates how maintenance management and predictive maintenance can be applied to the maintenance of wind turbines is discussed.
Źródło:
Quality Production Improvement - QPI; 2021, 3, 1; 41-52
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Managing the effectiveness of machines during the assignment of tasks to the production
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/103979.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
OEE
multi-station work
optimization
linear programming
praca wielostanowiskowa
optymalizacja
programowanie liniowe
Opis:
The allocation of production tasks to specific production resources is an important part of preparing the manufacturing process. The amount of profit and costs incurred depends on this division. The efficiency of production resources depends not only on the technologies used, but also on the tasks that will be carried out on them. Therefore, the management of machine efficiency includes both an evaluation (analytical and assessment undertaking, e.g. OEE) and planning activities aimed at maximizing the efficiency of machines by appropriately assigning production tasks to them. The article presents the problem of the allocation of production of various products to various production resources, including the efficiency of the use of machines and devices, emphasizing the possibilities of undertaking optimization actions in the cost management process. A mathematical model was formulated for this issue. An algorithm solving the problem of allocation of production tasks is presented. The solution was obtained using the Octave computing environment.
Źródło:
Quality Production Improvement - QPI; 2020, 2, 1; 188-196
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zarządzanie zadaniami pracowników w branży budowlanej
Managing the tasks of employees in the construction industry
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2065545.pdf
Data publikacji:
2019
Wydawca:
Politechnika Częstochowska
Tematy:
organizacja pracy
roboty budowlane
programowanie liniowe
work organization
construction works
linear programming
Opis:
Właściwa organizacja pracy polega na takim ustawieniu przebiegu pracy, aby przy najmniejszym nakładzie pracy człowieka lub urządzeń uzyskiwać maksymalne rezultaty działania. Artykuł prezentuje problem przydziału personelu, który występuje w rzeczywistej firmie świadczącej usługi budowlane. Sformułowano model matematyczny dla tego zagadnienia. Przedstawiono algorytm rozwiązujący problem alokacji personelu. Zaproponowana analiza stanowi punkt wyjścia do określenia możliwości usługowych oraz obciążenia każdego pracownika, co jest szczególnie istotne w przypadku stosowania pracy wielostanowiskowej.
The proper organization of work is to set the workflow to the slightest effort of man and machine operation to obtain maximum results. The article presents the problem of the allocation personnel, that occurs in a real company that provides construction services. The mathematical model for this issue was formulated. An algorithm solving the problem of personnel allocation is presented. The proposed analysis is a starting point for determining the production capacity and load of each workstation, which is particularly important when using multi-station work.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2019, 8, 1; 137--145
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Damage risk of the raceway edge arise in four-point slewing bearing
Autorzy:
Krynke, Marek
Mielczarek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/973027.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
slewing bearing
contact angle
contact zone
łożyska wieńcowe
kąt zwilżania
strefa styku
Opis:
In the article some forms of damage to raceway of slewing bearings for single-row ball bearing slewing ring with four-point contact and their causes were shown. Changes of the contact angle and its influence on the geometry for contact zone of the rolling elements raceway were analyzed. An identification of changes for contact angle of individual balls for different parameters of the contact was received. It was showed that contact angles of some rolling elements were increasing. It can cause damage to the raceway by spalling or rolling out of edge of the bearing ring. Ways of avoiding too early damage to the raceway at the stage of the design and the selection of coronary bearings were suggested.
Źródło:
System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 632-638
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue properties of nodular cast irons alloyed by Si, Mo and Cu
Autorzy:
Vaško, Alan
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/88535.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
nodular cast iron
SiMo
SiCu
fatigue
żeliwo sferoidalne
zmęczenie
Opis:
In recent years, the research of nodular cast iron has been focused on increasing fatigue resistence. In the paper, two types of alloyed nodular cast irons have been investigated – SiMo-nodular cast iron alloyed by 4% of silicon and 1% of molybdenum and SiCu-nodular cast iron alloyed by 4% of silicon and 1.5% of copper. SiMo-nodular cast iron is suitable for high-temperature applications, for example the exhaust manifolds of the combustion engines. SiCu-nodular cast iron is used in various components of tribotechnical units. These components are often loaded by fatigue. The mechanical and fatigue behaviour of both nodular cast iron types has been studied by means of tensile test, impact bending test, hardness test and fatigue tests. Fatigue tests were realised at low frequency cyclic push-pull loading up to 10 million cycles. The relationship between the amplitude of stress and number of cycles to failure was investigated and the fatigue strength was determined. Mechanical and fatigue properties of both nodular cast iron types are correlated with the microstructure of specimens.
Źródło:
System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 738-744
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Management the safety of exploitation of the rotation mechanism in a self-propelled crane
Autorzy:
Krynke, Marek
Vaško, Alan
Powiązania:
https://bibliotekanauki.pl/articles/88690.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
stability of cranes
slewing bearings
bearing capacity
stabilność dźwigów
łożyska wieńcowe
nośność podłoża
Opis:
The article analyzes of the load capacity of the rotation mechanism of the boom arm sub-assembly for a self-propelled crane. The uneven flexibility of systems supporting structures of the machine was taken into account in the identification of the load. The consideration are illustrated by the example slewing bearing from self-propelled crane. FEM method was used for calculations. The basic problems of construction of numerical model were discussed. Sample calculations of bearing carrying capacity has been done taking into account flexibility of bearings supporting structures, which also allowed to define the internal load distribution in the bearing. On example of the supporting structure of the mobile crane DST 5050 the internal load distribution in the crane bearing at different positions of the crane machine body were defined. During the rotation of the crane body priority angels were indicated. It has been shown that the deformations of the supporting frames are so large that they significantly change the distribution of forces transmitted by the individual bearing rollers.
Źródło:
System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 624-631
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safety management at the design stage of rotation node in mobile crane
Autorzy:
Krynke, Marek
Mielczarek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/23944765.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
safety management
mobile crane
slewing bearing
FEM (Finite Element Method) model
zarządzanie bezpieczeństwem
łożysko obrotowe
metoda elementów skończonych (MES)
Opis:
The article analyzes the safety aspects related to the construction and operation of a mobile crane. The load-bearing capacity of the boom sub-assembly rotation node was tested in a mobile crane. When identifying the load, the uneven compliance of the supporting components was taken into account. The considerations are illustrated with an example of a mobile crane slewing bearing with a lifting capacity of 50 tons. The basic problems of building the computational model are discussed and the results of the load bearing capacity of the slewing ring bearing for different positions of the load-bearing component of the tested machine are presented. An analysis of the load of the rolling elements in a slewing ring bearing was carried out and the reasons for changes in the load capacity in relation to the methods of calculating the load capacity, assuming non-deformability of the bearing rings, were indicated. It has been shown that deformations of the supporting frames are so large that they significantly change the distribution of forces transmitted by individual bearing rollers.
Źródło:
System Safety : Human - Technical Facility - Environment; 2022, 4, 1; 116-127
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the problem of staff allocation to work stations
Autorzy:
Krynke, Marek
Mielczarek, Krzysztof
Vaško, Alan
Powiązania:
https://bibliotekanauki.pl/articles/104023.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
work organization
multi-station work
linear programming
organizacja pracy
praca wielostanowiskowa
programowanie liniowe
Opis:
The proper organization of work is to set the workflow to the slightest effort of man and machine operation to obtain maximum results. The article presents the problem of the allocation of personnel that occurs in a real company. The mathematical model for this issue was formulated. An algorithm solving the problem of personnel allocation is presented. The proposed analysis is a starting point for determining the production capacity and load of each workstation, which is particularly important when using multi-station work and balancing the production line.
Źródło:
Quality Production Improvement - QPI; 2019, 1, 1; 545-550
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of accuracy and reliability of portable hardness testers
Autorzy:
Vaško, Alan
Sovík, Jan
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/103951.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
hardness
Brinell
Vickers
Rockwell
Leeb
twardość
Opis:
The paper is focused on determination of the accuracy and reliability of static and dynamic (portable) hardness testers. The paper deals with the measurement of hardness of calibration hardness plates by 4 different methods (Brinell, Vickers, Rockwell and Leeb) with using 5 different hardness testers (3 static and 2 portable). The hardness values measured by the different hardness testers were compared to the reference hardness listed in the calibration hardness plates and consequently, the accuracy of these measurements was evaluated. The aim of the work has been to determine the accuracy and reliability of portable hardness testers in comparison with static hardness testers.
Źródło:
Quality Production Improvement - QPI; 2019, 1, 1; 289-295
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cost optimization and risk minimization during teamwork organization
Autorzy:
Krynke, Marek
Mielczarek, Krzysztof
Kiriliuk, Olga
Powiązania:
https://bibliotekanauki.pl/articles/1537467.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
work organization
multi-station work
risk management
linear programming
Opis:
In the paper the problem of personnel allocation under threat was presented. The possibilities of undertaking optimization measures in the process of workers’ health and safety and expenses incurred were emphasized. A mathematical model for this issue has been formulated. An algorithm solving the problem of staff allocation was presented. The evaluation criterion for this assignment was the minimization of worker safety risks. Simultaneous optimization of expenses incurred in the implementation of production tasks was taken into account. The productivity of the staff and all existing jobs with the skills of the employees also was considered. This problem was solved using GNU Octave. The example presented in the paper shows that in case of the most unfavorable allocation of tasks to employees, it will lead to a significant reduction in profits and may increase the risk of undesirable situations. The proposed analysis is the starting point for determining the risk in case of multi-position work.
Źródło:
Management Systems in Production Engineering; 2021, 2 (29); 145-150
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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