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Low-rigidity thin-walled parts are components of many machines and devices, including high precision electric micro-machines used in control and tracking systems. Unfortunately, traditional machining methods used for machining such types of parts cause a significant reduction in efficiency and in many cases do not allow obtaining the required accuracy parameters. Moreover, they also fail to meet modern automation requirements and are uneconomical and inefficient. Therefore, the aim of provided studies was to investigate the dependency of cutting forces on cutting parameters and flank wear, as well as changes in cutting forces induced by changes in heating current density and machining parameters during the turning of thin-walled parts. The tests were carried out on a specially designed and constructed turning test stand for measuring cutting forces and temperature at specific cutting speed, feed rate, and depth of cut values. As part of the experiments, the effect of cutting parameters and flank wear on cutting forces, and the effect of heating current density and turning parameters on changes in cutting forces were analyzed. Moreover, the effect of cutting parameters (depth of cut, feed rate, and cutting speed) on temperature has been determined. Additionally, a system for controlling electro-contact heating and investigated the relationship between changes in cutting forces and machining time in the operations of turning micro-machine casings with and without the use of the control system was developed. The obtained results show that the application of an electro-contact heating control system allows to machine conical parts and semi-finished products at lower cutting forces and it leads to an increase in the deformation of the thin-walled casings caused by runout of the workpiece.
Antoni Świć; Arkadiusz Gola; Olga Orynycz; Karol Tucki. An Investigation into the Effect of Electro-Contact Heating in the Machining of Low-Rigidity Thin-Walled Micro-Machine Parts. Materials 2021, 14, 4427 .
AMA StyleAntoni Świć, Arkadiusz Gola, Olga Orynycz, Karol Tucki. An Investigation into the Effect of Electro-Contact Heating in the Machining of Low-Rigidity Thin-Walled Micro-Machine Parts. Materials. 2021; 14 (16):4427.
Chicago/Turabian StyleAntoni Świć; Arkadiusz Gola; Olga Orynycz; Karol Tucki. 2021. "An Investigation into the Effect of Electro-Contact Heating in the Machining of Low-Rigidity Thin-Walled Micro-Machine Parts." Materials 14, no. 16: 4427.
Robust scheduling of production jobs has been extensively studied. New methods are being sought to support effective production scheduling in the presence of disruptions caused by uncertain events. The range, extent and variety of uncertainty factors cannot be fully anticipated, which is why the solutions developed should necessarily allow for handling several disruptions simultaneously. Therefore, this study proposes a robust scheduling method that considers two factors contributing to the uncertainty of the schedule – machine failure and variable technological operation times. In particular the algorithms for robust scheduling using prediction tools: for prediction of machine failure, estimation and implementation of redundant service time buffers and for the prediction of variable technological operation times are presented.
Łukasz Sobaszek; Arkadiusz Gola; Antoni Świć. The Algorithms for Robust Scheduling of Production Jobs Under Machine Failure and Variable Technological Operation Times. Recent Advances in Computational Mechanics and Simulations 2021, 56 -67.
AMA StyleŁukasz Sobaszek, Arkadiusz Gola, Antoni Świć. The Algorithms for Robust Scheduling of Production Jobs Under Machine Failure and Variable Technological Operation Times. Recent Advances in Computational Mechanics and Simulations. 2021; ():56-67.
Chicago/Turabian StyleŁukasz Sobaszek; Arkadiusz Gola; Antoni Świć. 2021. "The Algorithms for Robust Scheduling of Production Jobs Under Machine Failure and Variable Technological Operation Times." Recent Advances in Computational Mechanics and Simulations , no. : 56-67.
Industrial robot work optimization has been extensively studied. The main reason for analysis is the growing number of robots implemented in the different manufacturing processes. In order to benefit from the implementation of industrial robots, each implementation process ought to be preceded by an in-depth analysis of the stand work. Often the integrator’s intuition is the only base for decisions. This work focuses on the need for individualized scheduling and analysis of robotic production tasks in the context of overall production scheduling. The method of alternative schedules analysis was presented. The paper presents a scheduling process for an industrial robot in the process of robot welding of thin-walled steel sheet structures under constraints caused by the process technology. The proposed method allowed to reduce the assumed time criterion at the level of 5.4% for one detail. The obtained value of technological operation time reduction resulted in increased time savings throughout the entire production process.
Łukasz Sobaszek; Antoni Świć. Scheduling the Process of Robot Welding of Thin-Walled Steel Sheet Structures under Constraint. Applied Sciences 2021, 11, 5683 .
AMA StyleŁukasz Sobaszek, Antoni Świć. Scheduling the Process of Robot Welding of Thin-Walled Steel Sheet Structures under Constraint. Applied Sciences. 2021; 11 (12):5683.
Chicago/Turabian StyleŁukasz Sobaszek; Antoni Świć. 2021. "Scheduling the Process of Robot Welding of Thin-Walled Steel Sheet Structures under Constraint." Applied Sciences 11, no. 12: 5683.
The article presents the results of the experimental validation of the developed static, time and frequency characteristics under interference and longitudinal feed control of a dynamic system in the process of turning axisymmetric parts. The experiments were conducted on a test bench, consisting of a 16B16P center lathe, a measuring system and a PC with a measurement card. The experiments were carried out to verify the assumptions of the baseline model of the turning process. As part of the study, we determined the static characteristics of the machining process, the time characteristics of the object under interference and under longitudinal feed rate control, and the frequency characteristics of the machine tool system under longitudinal feed rate control. During the experiments, we recorded the observed input and output signal curves and the observed characteristics of the interferences acting on the object, as well as the numerical values of the parameters of the equations describing the model, and in particular the gain of the elastic system, which is difficult to determine by analytical methods. The positive results of the experiments confirm the effectiveness of the proposed models and their usefulness for automation of machining processes.
Antoni Świć; Arkadiusz Gola. Theoretical and Experimental Identification of Frequency Characteristics and Control Signals of a Dynamic System in the Process of Turning. Materials 2021, 14, 2260 .
AMA StyleAntoni Świć, Arkadiusz Gola. Theoretical and Experimental Identification of Frequency Characteristics and Control Signals of a Dynamic System in the Process of Turning. Materials. 2021; 14 (9):2260.
Chicago/Turabian StyleAntoni Świć; Arkadiusz Gola. 2021. "Theoretical and Experimental Identification of Frequency Characteristics and Control Signals of a Dynamic System in the Process of Turning." Materials 14, no. 9: 2260.
Antoni Świć; Łukasz Sobaszek; Arkadiusz Gola. A Method of Increasing the Accuracy of Controlling the Parameters of Dynamic Systems and Regulating the Parameters of the Elastic-Deformable State in the Process of Treating Low-Rigidity Shafts. Advances in Science and Technology Research Journal 2021, 15, 26 -36.
AMA StyleAntoni Świć, Łukasz Sobaszek, Arkadiusz Gola. A Method of Increasing the Accuracy of Controlling the Parameters of Dynamic Systems and Regulating the Parameters of the Elastic-Deformable State in the Process of Treating Low-Rigidity Shafts. Advances in Science and Technology Research Journal. 2021; 15 (1):26-36.
Chicago/Turabian StyleAntoni Świć; Łukasz Sobaszek; Arkadiusz Gola. 2021. "A Method of Increasing the Accuracy of Controlling the Parameters of Dynamic Systems and Regulating the Parameters of the Elastic-Deformable State in the Process of Treating Low-Rigidity Shafts." Advances in Science and Technology Research Journal 15, no. 1: 26-36.
The specific character of the process of machining of axisymmetric low-rigidity parts makes it difficult to obtain finished products with a required accuracy of shape and dimensions and surface quality. The methods traditionally used to achieve accuracy in the machining of low-rigidity shafts considerably reduce the efficiency of the process, fail to meet modern automation requirements, and are uneconomical and not very productive, which means new methods for controlling the machining of low-rigidity shafts need to be looked for. This article presents a structural and a calculation scheme of a machining system for the turning of low-rigidity parts and a control model based on the second-order Lagrange equation. The first section of this paper presents qualitative relationships among variables in the proposed technological system for machining axisymmetric low-rigidity parts. Moreover, schematic of the machining system for the processing of such parts as well as equations describing the energy state of the machining system is presented. Next, mathematical model of optimal system control during the machining process, which permits to control a system under specific conditions and obtains a higher shape accuracy were introduced. The key stage of the verification process concerns the numerical validation of proposed solutions. Experimental studies confirm that the utilization of the proposed mathematical models describe the properties of the original object with sufficient accuracy and allow to obtain a higher machined shaft shape accuracy.
Antoni Świć; Arkadiusz Gola; Łukasz Sobaszek; Olga Orynycz. Control of Machining of Axisymmetric Low-Rigidity Parts. Materials 2020, 13, 5053 .
AMA StyleAntoni Świć, Arkadiusz Gola, Łukasz Sobaszek, Olga Orynycz. Control of Machining of Axisymmetric Low-Rigidity Parts. Materials. 2020; 13 (21):5053.
Chicago/Turabian StyleAntoni Świć; Arkadiusz Gola; Łukasz Sobaszek; Olga Orynycz. 2020. "Control of Machining of Axisymmetric Low-Rigidity Parts." Materials 13, no. 21: 5053.
The paper concerns the analysis of harmful emissions during the combustion process in households. The subject of the analysis is a low emission heating device with an output of 50 kW for burning biomass of forest origin (low-quality hardwoods or softwoods). The proposed boiler is automatically fed from the connected container by means of a screw conveyor. In this way, the optimum amount of fuel is supplied for maximum heat output (adjustment of the ratio of primary air to fuel). The proposed biomass heating system is equipped with a primary and secondary air supply system and exhaust gas sensors. This ensures optimal regulation of the air mixture and efficient and clean combustion. Proper control of the combustion process, control of the air supply by means of a lambda sensor and power control of the system ensure a low-emission combustion process. The system precisely adjusts to the heat demand. This results in highly efficient heating technology with low operating costs. In the presented work, the emission of exhaust gases from the proposed heating device during the combustion of woodchips and beech–oak pellets were measured. It is demonstrated that the proposed design of the boiler equipped with intelligent control significantly reduces emissions when the biomass solid fuels are used, e.g., CO emissions from beech and oak chips and pellets in the low-emission boiler—18 extract pipes shows the value <100 ppm, which is even lower than when gas is burned in the other boilers; on the other hand, the pine chips show even higher emission when burned in the low-emission burner. Consequently, the choice of biomass source and form of the fuel play some role in the emissions observed.
Karol Tucki; Olga Orynycz; Andrzej Wasiak; Antoni Świć; Leszek Mieszkalski; Joanna Wichłacz. Low Emissions Resulting from Combustion of Forest Biomass in a Small Scale Heating Device. Energies 2020, 13, 5495 .
AMA StyleKarol Tucki, Olga Orynycz, Andrzej Wasiak, Antoni Świć, Leszek Mieszkalski, Joanna Wichłacz. Low Emissions Resulting from Combustion of Forest Biomass in a Small Scale Heating Device. Energies. 2020; 13 (20):5495.
Chicago/Turabian StyleKarol Tucki; Olga Orynycz; Andrzej Wasiak; Antoni Świć; Leszek Mieszkalski; Joanna Wichłacz. 2020. "Low Emissions Resulting from Combustion of Forest Biomass in a Small Scale Heating Device." Energies 13, no. 20: 5495.
Currently-used decision support solutions allow decision makers to estimate the cost of developing a new product, its production, and promotion, and compare the estimated cost to the target cost. However, these solutions are inadequate for supporting simulations of identifying conditions, by which the specific cost is reached. The proposed approach provides a framework for searching for possible variants towards reaching the target production cost. This paper is concerned with a prototyping problem of product development described in terms of a constraint satisfaction problem. The proposed method uses parametric estimation to identify relationships between variables, and constraint programming to search for project completion variants within the company’s resources and project requirements. The results of an experiment indicate that constraint programming provides effective search strategies for finding admissible solutions. Consequently, the proposed approach allows decision makers to obtain alternative scenarios within the limits imposed by the production process. In this, it outperforms current methods dedicated to the support of evaluating the total cost of a new product. The declarative approach presented in this paper is used to model the production cost; however, it can be effortlessly extended to other aspects of product development (e.g., product reliability).
Marcin Relich; Antoni Świć. Parametric Estimation and Constraint Programming-Based Planning and Simulation of Production Cost of a New Product. Applied Sciences 2020, 10, 6330 .
AMA StyleMarcin Relich, Antoni Świć. Parametric Estimation and Constraint Programming-Based Planning and Simulation of Production Cost of a New Product. Applied Sciences. 2020; 10 (18):6330.
Chicago/Turabian StyleMarcin Relich; Antoni Świć. 2020. "Parametric Estimation and Constraint Programming-Based Planning and Simulation of Production Cost of a New Product." Applied Sciences 10, no. 18: 6330.
The article presents an original machine-learning-based automated approach for controlling the process of machining of low-rigidity shafts using artificial intelligence methods. Three models of hybrid controllers based on different types of neural networks and genetic algorithms were developed. In this study, an objective function optimized by a genetic algorithm was replaced with a neural network trained on real-life data. The task of the genetic algorithm is to select the optimal values of the input parameters of a neural network to ensure minimum deviation. Both input vector values and the neural network’s output values are real numbers, which means the problem under consideration is regressive. The performance of three types of neural networks was analyzed: a classic multilayer perceptron network, a nonlinear autoregressive network with exogenous input (NARX) prediction network, and a deep recurrent long short-term memory (LSTM) network. Algorithmic machine learning methods were used to achieve a high level of automation of the control process. By training the network on data from real measurements, we were able to control the reliability of the turning process, taking into account many factors that are usually overlooked during mathematical modelling. Positive results of the experiments confirm the effectiveness of the proposed method for controlling low-rigidity shaft turning.
Antoni Świć; Dariusz Wołos; Arkadiusz Gola; Grzegorz Kłosowski. The Use of Neural Networks and Genetic Algorithms to Control Low Rigidity Shafts Machining. Sensors 2020, 20, 4683 .
AMA StyleAntoni Świć, Dariusz Wołos, Arkadiusz Gola, Grzegorz Kłosowski. The Use of Neural Networks and Genetic Algorithms to Control Low Rigidity Shafts Machining. Sensors. 2020; 20 (17):4683.
Chicago/Turabian StyleAntoni Świć; Dariusz Wołos; Arkadiusz Gola; Grzegorz Kłosowski. 2020. "The Use of Neural Networks and Genetic Algorithms to Control Low Rigidity Shafts Machining." Sensors 20, no. 17: 4683.
Managing of wastes rich in lignocellulose creates the opportunity to produce biofuels that are in full compliance with the principles of sustainable development. Biomass, as a suitable base for the production of biofuels, does not have to be standardized, and its only important feature is the appropriate content of lignocellulose, which assures great freedom in the selection of input. Biobutanol, obtained from this type of biomass, can be used as fuel for internal combustion engines, including diesel engines. In the era of strict environmental protection regulations, especially concerning atmospheric air, any new fuel, apart from good energetic properties, should also show beneficial ecological effects. This study investigates the carbon dioxide emissions from biobutanol powered diesel engine by means of use of the simulation model. The parameters of a real passenger car powered by a diesel engine were used for simulation carried out accordingly to the WLTP (Worldwide Harmonized Light Vehicle Test Procedure) approval procedure as the current test for newly manufactured cars. The results obtained for biobutanol were compared with simulated exhaust emissions obtained for conventional diesel and with FAME (fatty acid methyl esters)—the most popular biofuel. Biobutanol, in spite of its higher consumption, showed lower direct carbon dioxide emissions than both: the conventional diesel and FAME. In addition, a LCA (life cycle assessment) was carried out for the fuels and vehicles in question using the SimaPro package. Therefore, the implementation of butyl alcohol as a fuel provides favorable environmental effects. This result gives arguments towards biofuel production management indicating that implementation of biobutanol production technology mitigates carbon dioxide emission, as well as promotes lignocellulosic resources rather than edible parts of the plants.
Karol Tucki; Olga Orynycz; Andrzej Wasiak; Antoni Świć; Remigiusz Mruk; Katarzyna Botwińska. Estimation of Carbon Dioxide Emissions from a Diesel Engine Powered by Lignocellulose Derived Fuel for Better Management of Fuel Production. Energies 2020, 13, 561 .
AMA StyleKarol Tucki, Olga Orynycz, Andrzej Wasiak, Antoni Świć, Remigiusz Mruk, Katarzyna Botwińska. Estimation of Carbon Dioxide Emissions from a Diesel Engine Powered by Lignocellulose Derived Fuel for Better Management of Fuel Production. Energies. 2020; 13 (3):561.
Chicago/Turabian StyleKarol Tucki; Olga Orynycz; Andrzej Wasiak; Antoni Świć; Remigiusz Mruk; Katarzyna Botwińska. 2020. "Estimation of Carbon Dioxide Emissions from a Diesel Engine Powered by Lignocellulose Derived Fuel for Better Management of Fuel Production." Energies 13, no. 3: 561.
Grzegorz Kłosowski; Tomasz Rymarczyk; Konrad Kania; Antoni Świć; Tomasz Cieplak. Maintenance of industrial reactors supported by deep learning driven ultrasound tomography. Eksploatacja i Niezawodnosc - Maintenance and Reliability 2019, 22, 138 -147.
AMA StyleGrzegorz Kłosowski, Tomasz Rymarczyk, Konrad Kania, Antoni Świć, Tomasz Cieplak. Maintenance of industrial reactors supported by deep learning driven ultrasound tomography. Eksploatacja i Niezawodnosc - Maintenance and Reliability. 2019; 22 (1):138-147.
Chicago/Turabian StyleGrzegorz Kłosowski; Tomasz Rymarczyk; Konrad Kania; Antoni Świć; Tomasz Cieplak. 2019. "Maintenance of industrial reactors supported by deep learning driven ultrasound tomography." Eksploatacja i Niezawodnosc - Maintenance and Reliability 22, no. 1: 138-147.
Łukasz Sobaszek; Arkadiusz Gola; Antoni Świć. Time-based machine failure prediction in multi-machine manufacturing systems. Eksploatacja i Niezawodnosc - Maintenance and Reliability 2019, 22, 52 -62.
AMA StyleŁukasz Sobaszek, Arkadiusz Gola, Antoni Świć. Time-based machine failure prediction in multi-machine manufacturing systems. Eksploatacja i Niezawodnosc - Maintenance and Reliability. 2019; 22 (1):52-62.
Chicago/Turabian StyleŁukasz Sobaszek; Arkadiusz Gola; Antoni Świć. 2019. "Time-based machine failure prediction in multi-machine manufacturing systems." Eksploatacja i Niezawodnosc - Maintenance and Reliability 22, no. 1: 52-62.
The depletion of conventional energy sources, including crude oil, is one of the cause of the search for alternative carriers and fuels in order to prevent an energy crisis. Due to the progressing climate change, each new solution must comply with the principles of sustainable development. Dynamic development in the transport sector and, as a consequence, the increase in the number of vehicles on the roads negatively affect the atmosphere and the environment, which is why the share of biofuels, which are used to minimize this negative impact, is steadily increasing. This paper analyzes the emissivity (emission capability) of biofuels such as fatty acid methyl esters (FAME), ethanol, dimethyl ether and butanol and compares them with conventional fuels. A computer simulation was used, based on the real parameters of vehicles and fuels. The test procedure was carried out in accordance with the appropriate New European Driving Cycle (NEDC) approval test for such cars. In addition, a life cycle assessment (LCA) for the fuels and vehicles in question was carried out using the SimaPro package. Based on the results obtained from the z computer simulation, it was found that diesel fuel showed lower emissivity than petrol and its alternatives. However, FAME fuel provided more carbon dioxide than conventional diesel. As far as petrol is concerned, it was less emissive than dimethyl ether. Ethanol and butanol reduced emissions by 7% and 15%, respectively. After taking into account CO2 emissions generated in the production process, both FAME and butanol were not very favorable in the context of other fuels. The results might be used for appropriate fuel use management.
Karol Tucki; Olga Orynycz; Remigiusz Mruk; Antoni Świć; Katarzyna Botwińska. Modeling of Biofuel’s Emissivity for Fuel Choice Management. Sustainability 2019, 11, 6842 .
AMA StyleKarol Tucki, Olga Orynycz, Remigiusz Mruk, Antoni Świć, Katarzyna Botwińska. Modeling of Biofuel’s Emissivity for Fuel Choice Management. Sustainability. 2019; 11 (23):6842.
Chicago/Turabian StyleKarol Tucki; Olga Orynycz; Remigiusz Mruk; Antoni Świć; Katarzyna Botwińska. 2019. "Modeling of Biofuel’s Emissivity for Fuel Choice Management." Sustainability 11, no. 23: 6842.
This work analyses and proposes an application of adaptive control systems exhibiting low-sensitivity to changes in the technological system parameters in machining low-stiffness axisymmetric workpieces. Secondly, the frequency ranges at which the adaptive control system shows high sensitivity to changing machining allowance were determined. Finally, the developed method enables increasing the control accuracy of dynamic system parameters under changing feed rate and adjusting the elastic-strain parameters of the low-stiffness workpiece by means of the introduction of an error correction block in the form of negative feedback relative to the cutting force. The paper presents the method for constructing adaptive control systems that exhibit low sensitivity to modification of turning or grinding parameters.
Antoni Świć; Arkadiusz Gola; Łukasz Sobaszek; Natalia Šmidová. Implementation of Low-Sensitivity Adaptive Control Systems in Machining Low-Stiffness Axisymmetric Workpieces. IFAC-PapersOnLine 2019, 52, 79 -84.
AMA StyleAntoni Świć, Arkadiusz Gola, Łukasz Sobaszek, Natalia Šmidová. Implementation of Low-Sensitivity Adaptive Control Systems in Machining Low-Stiffness Axisymmetric Workpieces. IFAC-PapersOnLine. 2019; 52 (10):79-84.
Chicago/Turabian StyleAntoni Świć; Arkadiusz Gola; Łukasz Sobaszek; Natalia Šmidová. 2019. "Implementation of Low-Sensitivity Adaptive Control Systems in Machining Low-Stiffness Axisymmetric Workpieces." IFAC-PapersOnLine 52, no. 10: 79-84.
The following paper describes the method for heat straightening of long low-stiffness shafts in a thermomechanical treatment tool. The straightening tool with a fixed workpiece, whose coefficient of thermal expansion is lower than that of the shaft material, is subjected to cooling. As a result of the difference of coefficients of thermal expansion at cooling axial loading occurs, causing axial the straightening of the shaft. Subsequent sections described the control system for automatic thermomechanical treatment and the mathematical model of the controlled system, functionally combining the input and output parameters. The paper also presents the experimental part of the study, within which the thermomechanical treatment tool was employed to perform axial straightening of shafts combined with hardening (aimed to increase the corrosion resistance of steel). The conducted tests showed that during heating the shaft deforms at the expected speed, in accordance with the heat treatment technology. As a result, the experimental tests have confirmed the validity of the developed models, diagrams and analytical dependencies.
Antoni Świć; Łukasz Sobaszek; Arkadiusz Gola; Natalia Šmidová. Thermomechanical Treatment of Long Low-Stiffness Shafts. IFAC-PapersOnLine 2019, 52, 136 -141.
AMA StyleAntoni Świć, Łukasz Sobaszek, Arkadiusz Gola, Natalia Šmidová. Thermomechanical Treatment of Long Low-Stiffness Shafts. IFAC-PapersOnLine. 2019; 52 (10):136-141.
Chicago/Turabian StyleAntoni Świć; Łukasz Sobaszek; Arkadiusz Gola; Natalia Šmidová. 2019. "Thermomechanical Treatment of Long Low-Stiffness Shafts." IFAC-PapersOnLine 52, no. 10: 136-141.
The paper presents a 7-level hierarchical mathematical model of the system of longitudinal turning and a mathematical model of the dynamic system of machining of shafts with low rigidity in the elastic-deformable state, taking into account factors interfering with and destabilising the process of shaft machining. For the purpose of validation of the models, a study was conducted on the conformance of the dynamic characteristics of the mathematical model with the actual object. The study was realized on specially designed experimental workstation for the study of characteristics of the dynamic system of turning of elastic-deformable shafts with low rigidity. The experiment demonstrated a high conformance of the dynamic characteristics of the mathematical model with the actual object.
Antoni Świć; Łukasz Sobaszek; Arkadiusz Gola; Olga Orynycz. Clasiffication and Analysis of Typical Structures of Dynamic Systems of Machining of Low-Rigidity Shafts. IFAC-PapersOnLine 2019, 52, 142 -147.
AMA StyleAntoni Świć, Łukasz Sobaszek, Arkadiusz Gola, Olga Orynycz. Clasiffication and Analysis of Typical Structures of Dynamic Systems of Machining of Low-Rigidity Shafts. IFAC-PapersOnLine. 2019; 52 (10):142-147.
Chicago/Turabian StyleAntoni Świć; Łukasz Sobaszek; Arkadiusz Gola; Olga Orynycz. 2019. "Clasiffication and Analysis of Typical Structures of Dynamic Systems of Machining of Low-Rigidity Shafts." IFAC-PapersOnLine 52, no. 10: 142-147.
An increase of needs for replacement of fossil fuels, and for mitigation of Carbon Dioxide emissions generated from fossil fuels inspires the search for new fuels based on renewable biological resources. It would be convenient if the biological component of the fuel required as little as possible conversion operations in the production. The obvious response is an attempt to use unconverted, neat plant oils as a fuel for Diesel engines. The present paper is devoted to the experimental studies of the combustion process of neat rapeseed oil, and its mixtures with gasoline and ethanol as additional components of the mixtures. The investigation of combustion was carried out in a fixed volume combustion chamber equipped with a Common Rail injection system. It is shown that the instant of ignition, as well as time-dependence of heat emanation, are strongly dependent upon mixture composition. The results enable the design of mixture compositions that could serve as commercial fuel for Diesel engines. Such fuels are expected to fulfill the requirements for the sustainability of road transport.
Karol Tucki; Remigiusz Mruk; Olga Orynycz; Andrzej Wasiak; Antoni Świć. Thermodynamic Fundamentals for Fuel Production Management. Sustainability 2019, 11, 4449 .
AMA StyleKarol Tucki, Remigiusz Mruk, Olga Orynycz, Andrzej Wasiak, Antoni Świć. Thermodynamic Fundamentals for Fuel Production Management. Sustainability. 2019; 11 (16):4449.
Chicago/Turabian StyleKarol Tucki; Remigiusz Mruk; Olga Orynycz; Andrzej Wasiak; Antoni Świć. 2019. "Thermodynamic Fundamentals for Fuel Production Management." Sustainability 11, no. 16: 4449.
The article analyzes the dynamics of the development of the electromobility sector in Poland in the context of the European Union and due to the economic situation and development of the electromobility sector in the contexts of Switzerland and Norway. On the basis of obtained data, a forecast was made which foresees the most likely outlook of the electric car market in the coming years. The forecast was made using the creeping trend method, and extended up to 2030. As part of the analysis of the effect of the impact of electromobility, an original method was proposed for calculating the primary energy factor (PEF) primary energy ratio in the European Union and in its individual countries, which illustrates the conversion efficiency of primary energy into electricity and the overall efficiency of the power system. The original method was also verified, referring to the methods proposed by the Fraunhofer-Institut. On the basis of all previous actions and analyses, an assessment was made of the impact of the development of the electromobility sector on air quality in the countries studied. Carbon dioxide tank-to-wheels emission reductions which result from the conversion of the car fleet from conventional vehicles to electric motors were then calculated. In addition to reducing carbon dioxide emissions, other pollutant emissions were also calculated, such as carbon monoxide (CO), nitrogen oxides (NOx) and particulate matter (PM). The increase in the demand for electricity resulting from the needs of electric vehicles was also estimated. On this basis, and also on the basis of previously calculated primary energy coefficients, the emission reduction values have been adjusted for additional emissions resulting from the generation of electricity in power plants.
Karol Tucki; Olga Orynycz; Antoni Świć; Mateusz Mitoraj-Wojtanek. The Development of Electromobility in Poland and EU States as a Tool for Management of CO2 Emissions. Energies 2019, 12, 2942 .
AMA StyleKarol Tucki, Olga Orynycz, Antoni Świć, Mateusz Mitoraj-Wojtanek. The Development of Electromobility in Poland and EU States as a Tool for Management of CO2 Emissions. Energies. 2019; 12 (15):2942.
Chicago/Turabian StyleKarol Tucki; Olga Orynycz; Antoni Świć; Mateusz Mitoraj-Wojtanek. 2019. "The Development of Electromobility in Poland and EU States as a Tool for Management of CO2 Emissions." Energies 12, no. 15: 2942.
Antoni Świć; Dariusz Wołos; Arkadiusz Gola; Natalia Smidova. Accuracy Control in the Process of Low-Rigidity Elastic Deformable Shafts Turning. Tehnicki vjesnik - Technical Gazette 2019, 26, 927 -934.
AMA StyleAntoni Świć, Dariusz Wołos, Arkadiusz Gola, Natalia Smidova. Accuracy Control in the Process of Low-Rigidity Elastic Deformable Shafts Turning. Tehnicki vjesnik - Technical Gazette. 2019; 26 (4):927-934.
Chicago/Turabian StyleAntoni Świć; Dariusz Wołos; Arkadiusz Gola; Natalia Smidova. 2019. "Accuracy Control in the Process of Low-Rigidity Elastic Deformable Shafts Turning." Tehnicki vjesnik - Technical Gazette 26, no. 4: 927-934.
Intensified action aimed at reducing CO2 emissions and striving for energy self-sufficiency of both business entities and individual consumers are forcing the sustainable development of environmentally friendly and renewable energy sources. The development of an appropriate class of equipment and production technology is not without significance in this process. On the basis of a proven design for a combustion burner for ecological fuels, a new biofuel burner, also dedicated to prosumers’ energetics, was built. The aim of the study was to determine the effect of the type of biofuel on a burner’s output parameters, especially gaseous emissions, during the combustion of four types of fuels, including three types of biomass. The combustion temperature was measured for lignite, wood pellets, straw pellets, and sunflower pellets. An analysis of exhaust gas composition was performed for lignite and wood pellets. The results of exhaust emissions and combustion temperatures were compared with the burners currently in use. The use of a new burner might contribute to cleaner combustion and reducing the emissions of some gaseous components.
Karol Tucki; Olga Orynycz; Andrzej Wasiak; Antoni Świć; Joanna Wichłacz. The Impact of Fuel Type on the Output Parameters of a New Biofuel Burner. Energies 2019, 12, 1383 .
AMA StyleKarol Tucki, Olga Orynycz, Andrzej Wasiak, Antoni Świć, Joanna Wichłacz. The Impact of Fuel Type on the Output Parameters of a New Biofuel Burner. Energies. 2019; 12 (7):1383.
Chicago/Turabian StyleKarol Tucki; Olga Orynycz; Andrzej Wasiak; Antoni Świć; Joanna Wichłacz. 2019. "The Impact of Fuel Type on the Output Parameters of a New Biofuel Burner." Energies 12, no. 7: 1383.