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Dr. Jan Krmela
Alexander Dubček University of Trenčín (Faculty of Industrial Technologies in Púchov)

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0 ANSYS
0 Polymers
0 Tensile Testing
0 Tires
0 Cyclic Tests

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Journal article
Published: 25 March 2021 in Materials
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High-strength screws represent one of the main joining or fastening components which are commonly used in the process of installation of frame constructions for information boards or signposts, relating to the traffic roads. The control of the production process may not always be a sufficient method for ensuring road safety. The backward investigation and control of the screw material processing seems to be the one of the most important procedures when there is the occurrence of any failure during the operation of the screw. This paper is mainly focused on the analysis of the failure of the high-strength screw of 10.9 grade with M diameter of 27 × 3 and a shank length of 64 mm. The mentioned and investigated screw was used as a fastener in a highway frame construction. In the paper, there is mainly the analysis of the material for a broken screw in terms of the material micropurity, the material microstructure, the surface treatment as well as chemical composition. The evaluation was based on investigation by optical microscopy, scanning electron microscopy and energy dispersive spectroscopy. Important knowledge and results were also obtained due to information on micromorphology and material contrast of the fracture surface resulting from fractographic analysis, using the method of scanning electron microscopy. In the case of the production of the high-strength screws, the tempering stands for the decisive or crucial process of heat treatment because the given process can ensure a decrease in hardness, while the required ductile properties of the material are kept and this is also reflected in the increase of strength and micromorphology of the fracture surface. From the aspect of micropurity, inclusions of critical size or distribution were not identified in the material, referring to Czech standard ČSN ISO 4967 (420471). The microstructure corresponds to tempered martensite, but the fracture surface of the broken screw was based on an intercrystalline micromechanism, which is undesirable for the given type of component. Combined with the measurement of the HV1 (Vickers hardness at a load of 1 kg) from the edge to the central area of the screw, the analysis revealed the significant drawbacks in the heat treatment of the high-strength screw.

ACS Style

Andrej Dubec; Petra Kováčiková; Jan Krmela; Vladimíra Krmelová; Artem Artyukhov. Fracture Analysis of High-Strength Screw for Highway Construction. Materials 2021, 14, 1599 .

AMA Style

Andrej Dubec, Petra Kováčiková, Jan Krmela, Vladimíra Krmelová, Artem Artyukhov. Fracture Analysis of High-Strength Screw for Highway Construction. Materials. 2021; 14 (7):1599.

Chicago/Turabian Style

Andrej Dubec; Petra Kováčiková; Jan Krmela; Vladimíra Krmelová; Artem Artyukhov. 2021. "Fracture Analysis of High-Strength Screw for Highway Construction." Materials 14, no. 7: 1599.

Journal article
Published: 22 March 2021 in Manufacturing Technology
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ACS Style

Jan Krmela; Tetiana Hovorun; Kristina Berladir; Artem Artyukhov. Increasing the Structural Strength of Corrosion-resistant Steel for Elastic Components of Diaphragm Compressor. Manufacturing Technology 2021, 1 .

AMA Style

Jan Krmela, Tetiana Hovorun, Kristina Berladir, Artem Artyukhov. Increasing the Structural Strength of Corrosion-resistant Steel for Elastic Components of Diaphragm Compressor. Manufacturing Technology. 2021; ():1.

Chicago/Turabian Style

Jan Krmela; Tetiana Hovorun; Kristina Berladir; Artem Artyukhov. 2021. "Increasing the Structural Strength of Corrosion-resistant Steel for Elastic Components of Diaphragm Compressor." Manufacturing Technology , no. : 1.

Journal article
Published: 15 March 2021 in Transport Problems
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ACS Style

Petr Jilek; Jan Krmela; Jan Berg. MODIFICATION OF THE ADHESIVE FORCE BY CHANGING THE RADIAL REACTION ON VEHICLE WHEELS. Transport Problems 2021, 16, 179 -186.

AMA Style

Petr Jilek, Jan Krmela, Jan Berg. MODIFICATION OF THE ADHESIVE FORCE BY CHANGING THE RADIAL REACTION ON VEHICLE WHEELS. Transport Problems. 2021; 16 (1):179-186.

Chicago/Turabian Style

Petr Jilek; Jan Krmela; Jan Berg. 2021. "MODIFICATION OF THE ADHESIVE FORCE BY CHANGING THE RADIAL REACTION ON VEHICLE WHEELS." Transport Problems 16, no. 1: 179-186.

Journal article
Published: 27 January 2021 in Applied Sciences
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The article deals with the theoretical description and experimental study of the hydrodynamic and heat transfer properties regarding the operation of multistage gravitational devices of the fluidized bed with inclined perforated shelves. The peculiarities of the work and the implementation field of the multistage shelf units are described. A theoretical model to define the solubilizer’s velocity above the perforation holes, in the above-shelf space of the device and in the outloading gap, as well as the residence time of the dispersed phase at the stage (perforated shelf contact) of the device is presented. The results of experimental studies regarding the influence, made by the structural parameters of the perforated shelf contacts, on the distribution pattern of single-phase and gas-dispersed flows in the workspace of the device, on the intensity of interphase heat transfer are presented. The conditions to create active hydrodynamic operating modes of multistage gravitational shelf devices, which provide higher efficiency of heat-mass transfer processes, and with lower gas consumption and hydraulic resistance compared to typical fluidized bed devices, are proved. Peculiarities regarding the implementation of heat-mass transfer processes in multistage devices are described using heat treatment and drying processes as examples.

ACS Style

Mykola Yukhymenko; Artem Artyukhov; Ruslan Ostroha; Nadiia Artyukhova; Jan Krmela; Jozef Bocko. Multistage Shelf Devices with Fluidized Bed for Heat-Mass Transfer Processes: Experimental Studies and Practical Implementation. Applied Sciences 2021, 11, 1159 .

AMA Style

Mykola Yukhymenko, Artem Artyukhov, Ruslan Ostroha, Nadiia Artyukhova, Jan Krmela, Jozef Bocko. Multistage Shelf Devices with Fluidized Bed for Heat-Mass Transfer Processes: Experimental Studies and Practical Implementation. Applied Sciences. 2021; 11 (3):1159.

Chicago/Turabian Style

Mykola Yukhymenko; Artem Artyukhov; Ruslan Ostroha; Nadiia Artyukhova; Jan Krmela; Jozef Bocko. 2021. "Multistage Shelf Devices with Fluidized Bed for Heat-Mass Transfer Processes: Experimental Studies and Practical Implementation." Applied Sciences 11, no. 3: 1159.

Conference paper
Published: 21 January 2021 in Journal of Physics: Conference Series
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The article deals with determination of material parameters of elastomer (rubber) for computational modeling based on experiment data - hardness and also determination of materials parameters of specific composite materials for next-generation tires. Mooney-Rivlin parameters of elastomers can be determined on the basis of the Shore A hardness. There are exist equations which can be used conversion of the mentioned hardness to material parameters of elastomers. The procedure is such that the Shore A hardness is converted to the elastic or shear modulus and then Mooney-Rivlin material parameters are determined from the modulus. But these equations can lead to different results for the same hardness. In this paper, these results are comparison. The results can be used as input material data of rubber seals of pump and compressor machinery for their computational modeling. Methods of determination of the modulus of elasticity of composite with elastomer matrix are necessary created based on experimental data of static tensile test of specimens of a radial tire casing. Next results can be applied for simulations of tires with interaction roads which used for modern passenger cars and trucks and the results can be applied for simulation of conveyor belts where elastomer is used.

ACS Style

J Krmela; A Artyukhov; V Krmelová; O Pozovnyi. Determination of material parameters of rubber and composites for computational modeling based on experiment data. Journal of Physics: Conference Series 2021, 1741, 012047 .

AMA Style

J Krmela, A Artyukhov, V Krmelová, O Pozovnyi. Determination of material parameters of rubber and composites for computational modeling based on experiment data. Journal of Physics: Conference Series. 2021; 1741 (1):012047.

Chicago/Turabian Style

J Krmela; A Artyukhov; V Krmelová; O Pozovnyi. 2021. "Determination of material parameters of rubber and composites for computational modeling based on experiment data." Journal of Physics: Conference Series 1741, no. 1: 012047.

Journal article
Published: 06 January 2021 in Energies
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The article deals with the study on the efficiency of units for porous ammonium nitrate production. The ways which increase the effective implementation of energy resources are determined by including the ejector recycling module, heat and mass exchangers that utilize principles of regenerative indirect evaporative cooling, and the sub-atmospheric inverse Brayton cycle. Mixed exergy analysis evaluates all flows of the system contour as those of the same value. The target parameter for determining the efficiency of both systems is the ratio of the unit’s productivity to the exergy expenditures to produce the unit mass of the product. As a result, it is found that the mentioned devices and units enable to increase the efficiency of the basic scheme by 87%.

ACS Style

Dmytro Levchenko; Andrii Manzharov; Artem Artyukhov; Nadiya Artyukhova; Jan Krmela. Comparative Exergy Analysis of Units for the Porous Ammonium Nitrate Granulation. Energies 2021, 14, 280 .

AMA Style

Dmytro Levchenko, Andrii Manzharov, Artem Artyukhov, Nadiya Artyukhova, Jan Krmela. Comparative Exergy Analysis of Units for the Porous Ammonium Nitrate Granulation. Energies. 2021; 14 (2):280.

Chicago/Turabian Style

Dmytro Levchenko; Andrii Manzharov; Artem Artyukhov; Nadiya Artyukhova; Jan Krmela. 2021. "Comparative Exergy Analysis of Units for the Porous Ammonium Nitrate Granulation." Energies 14, no. 2: 280.

Chapter
Published: 01 January 2021 in Handbook of Research on Global Enterprise Operations and Opportunities
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The work is devoted to the using of modern program packages for simulation of the aerodisperse systems hydrodynamics of equipment with directional motion of the fluidized bed for the chemical industry. The criteria for selecting the design for this type of equipment are substantiated. New forms of organization of flow motion in the fluidized bed regime are proposed. The mechanisms of motion and residence time control of the disperse phase in the working space of the devices are described. The results of computer simulation of hydrodynamic conditions of the directed gas stream and a two-phase aerodisperse system motion are presented. An algorithm for optimizing the calculation of equipment based on the results of computer simulation (by example of the unit for the porous ammonium nitrate with nanostructured porous layers production) is shown.

ACS Style

Artem Artyukhov; Jan Krmela; Nadiia Artyukhova; Ruslan Ostroha. Modeling of the Aerodisperse Systems Hydrodynamics in Devices With Directional Motion of the Fluidized Bed. Handbook of Research on Global Enterprise Operations and Opportunities 2021, 1289 -1307.

AMA Style

Artem Artyukhov, Jan Krmela, Nadiia Artyukhova, Ruslan Ostroha. Modeling of the Aerodisperse Systems Hydrodynamics in Devices With Directional Motion of the Fluidized Bed. Handbook of Research on Global Enterprise Operations and Opportunities. 2021; ():1289-1307.

Chicago/Turabian Style

Artem Artyukhov; Jan Krmela; Nadiia Artyukhova; Ruslan Ostroha. 2021. "Modeling of the Aerodisperse Systems Hydrodynamics in Devices With Directional Motion of the Fluidized Bed." Handbook of Research on Global Enterprise Operations and Opportunities , no. : 1289-1307.

Journal article
Published: 01 January 2021 in Journal of Ecological Engineering
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ACS Style

Serhii Vasylovych Vakal; Anna Oleksandrivna Yanovska; Viktoriia Serhiivna Vakal; Artem Yevhenovych Artyukhov; Viktoriia Yuriivna Shkola; Tetiana Yuriivna Yarova; Valerii Pavlovych Dmitrikov; Jan Krmela; Myroslav Stepanovych Malovanyy. Minimization of Soil Pollution as a Result of the Use of Encapsulated Mineral Fertilizers. Journal of Ecological Engineering 2021, 22, 221 -230.

AMA Style

Serhii Vasylovych Vakal, Anna Oleksandrivna Yanovska, Viktoriia Serhiivna Vakal, Artem Yevhenovych Artyukhov, Viktoriia Yuriivna Shkola, Tetiana Yuriivna Yarova, Valerii Pavlovych Dmitrikov, Jan Krmela, Myroslav Stepanovych Malovanyy. Minimization of Soil Pollution as a Result of the Use of Encapsulated Mineral Fertilizers. Journal of Ecological Engineering. 2021; 22 (1):221-230.

Chicago/Turabian Style

Serhii Vasylovych Vakal; Anna Oleksandrivna Yanovska; Viktoriia Serhiivna Vakal; Artem Yevhenovych Artyukhov; Viktoriia Yuriivna Shkola; Tetiana Yuriivna Yarova; Valerii Pavlovych Dmitrikov; Jan Krmela; Myroslav Stepanovych Malovanyy. 2021. "Minimization of Soil Pollution as a Result of the Use of Encapsulated Mineral Fertilizers." Journal of Ecological Engineering 22, no. 1: 221-230.

Journal article
Published: 14 December 2020 in Manufacturing Technology
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ACS Style

Artem Artyukhov; Jan Krmela; Vladimíra Krmelová. Manufacturing of Vortex Granulators: Simulation of the Vortex Fluidized Bed Functioning under the Disperse Phase Interaction in the Constrained Motion. Manufacturing Technology 2020, 20, 547 -553.

AMA Style

Artem Artyukhov, Jan Krmela, Vladimíra Krmelová. Manufacturing of Vortex Granulators: Simulation of the Vortex Fluidized Bed Functioning under the Disperse Phase Interaction in the Constrained Motion. Manufacturing Technology. 2020; 20 (5):547-553.

Chicago/Turabian Style

Artem Artyukhov; Jan Krmela; Vladimíra Krmelová. 2020. "Manufacturing of Vortex Granulators: Simulation of the Vortex Fluidized Bed Functioning under the Disperse Phase Interaction in the Constrained Motion." Manufacturing Technology 20, no. 5: 547-553.

Journal article
Published: 08 December 2020 in Manufacturing Technology
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ACS Style

Jan Krmela; Nadiia Artyukhova; Artem Artyukhov. Investigation of the Convection Drying Process in a Multistage Apparatus with a Differential Thermal Regime. Manufacturing Technology 2020, 20, 468 -473.

AMA Style

Jan Krmela, Nadiia Artyukhova, Artem Artyukhov. Investigation of the Convection Drying Process in a Multistage Apparatus with a Differential Thermal Regime. Manufacturing Technology. 2020; 20 (4):468-473.

Chicago/Turabian Style

Jan Krmela; Nadiia Artyukhova; Artem Artyukhov. 2020. "Investigation of the Convection Drying Process in a Multistage Apparatus with a Differential Thermal Regime." Manufacturing Technology 20, no. 4: 468-473.

Journal article
Published: 11 November 2020 in Polymers
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Modelling the influence of high-energy ionising radiation on the properties of materials with polymeric matrix using advanced artificial intelligence tools plays an important role in the research and development of new materials for various industrial applications. It also applies to effective modification of existing materials based on polymer matrices to achieve the desired properties. In the presented work, the effects of high-energy electron beam radiation with various doses on the dynamic mechanical properties of melamine resin, phenol-formaldehyde resin, and nitrile rubber blend have been studied over a wide temperature range. A new stiffness-temperature model based on Weibull statistics of the secondary bonds breaking during the relaxation transitions has been developed to quantitatively describe changes in the storage modulus with temperature and applied radiation dose until the onset of the temperature of the additional, thermally-induced polymerisation reactions. A global search real-coded genetic algorithm has been successfully applied to optimise the parameters of the developed model by minimising the sum-squared error. An excellent agreement between the modelled and experimental data has been found.

ACS Style

Ivan Kopal; Juliána Vršková; Alžbeta Bakošová; Marta Harničárová; Ivan Labaj; Darina Ondrušová; Jan Valíček; Jan Krmela. Modelling the Stiffness-Temperature Dependence of Resin-Rubber Blends Cured by High-Energy Electron Beam Radiation Using Global Search Genetic Algorithm. Polymers 2020, 12, 2652 .

AMA Style

Ivan Kopal, Juliána Vršková, Alžbeta Bakošová, Marta Harničárová, Ivan Labaj, Darina Ondrušová, Jan Valíček, Jan Krmela. Modelling the Stiffness-Temperature Dependence of Resin-Rubber Blends Cured by High-Energy Electron Beam Radiation Using Global Search Genetic Algorithm. Polymers. 2020; 12 (11):2652.

Chicago/Turabian Style

Ivan Kopal; Juliána Vršková; Alžbeta Bakošová; Marta Harničárová; Ivan Labaj; Darina Ondrušová; Jan Valíček; Jan Krmela. 2020. "Modelling the Stiffness-Temperature Dependence of Resin-Rubber Blends Cured by High-Energy Electron Beam Radiation Using Global Search Genetic Algorithm." Polymers 12, no. 11: 2652.

Conference paper
Published: 09 November 2020 in 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)
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The article describes the technological basis for production of the ammonium nitrate with a nanoporous structure as a component of the non-trotyl industrial explosive ANFO. The necessity to obtain a nanoporous structure with various pores to ensure reliable absorptivity and retentivity of diesel fuel distillate is substantiated. The construction of a vortex device with a combined flow motion as the main equipment of the unit to produce porous ammonium nitrate is proposed. The morphology of the surface and near-surface layers in the porous ammonium nitrate granules is studied. A comparative description of the quality indicators of porous ammonium nitrate, obtained in various vortex devices is given.

ACS Style

Artem Artyukhov; Kristina Berladir; Jan Krmela. Technological Basis for the Production of Ammonium Nitrate with a Nanoporous Surface and Near-surface Structure in Combined Flow Motion Devices. 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP) 2020, 02NEE09-1 -02NEE09-6.

AMA Style

Artem Artyukhov, Kristina Berladir, Jan Krmela. Technological Basis for the Production of Ammonium Nitrate with a Nanoporous Surface and Near-surface Structure in Combined Flow Motion Devices. 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP). 2020; ():02NEE09-1-02NEE09-6.

Chicago/Turabian Style

Artem Artyukhov; Kristina Berladir; Jan Krmela. 2020. "Technological Basis for the Production of Ammonium Nitrate with a Nanoporous Surface and Near-surface Structure in Combined Flow Motion Devices." 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP) , no. : 02NEE09-1-02NEE09-6.

Conference paper
Published: 09 November 2020 in 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)
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The article deals with the study regarding the quality indicators of the nanoporous structure in the ammonium nitrate, used as a component of the industrial explosive ANFO. The final drying stage of porous ammonium nitrate (PAN) is briefly described. The necessity to carry out the final drying stage in multistage devices is substantiated. A software product is presented that enables to evaluate the quality of the nanoporous surface in PAN granules. The morphology of the nanoporous surface in the PAN granules under different conditions of final drying is studied. The quality indicators of PAN granules are given. The obtained results can be used to construct the drying units for the PAN final drying stage, i.e., to calculate the main technological parameters of the drying unit and dryers’ constructive properties.

ACS Style

Nadiia Artyukhova; Jan Krmela; Vladimira Krmelova. Quality Indicators of Ammonium Nitrate with Nanoporous Surface Structure: Final Drying Stage. 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP) 2020, 02NEE08-1 -02NEE08-5.

AMA Style

Nadiia Artyukhova, Jan Krmela, Vladimira Krmelova. Quality Indicators of Ammonium Nitrate with Nanoporous Surface Structure: Final Drying Stage. 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP). 2020; ():02NEE08-1-02NEE08-5.

Chicago/Turabian Style

Nadiia Artyukhova; Jan Krmela; Vladimira Krmelova. 2020. "Quality Indicators of Ammonium Nitrate with Nanoporous Surface Structure: Final Drying Stage." 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP) , no. : 02NEE08-1-02NEE08-5.

Journal article
Published: 07 September 2020 in Manufacturing Technology
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The paper presents the results of an experimental research and a numerical calculation of a multi-gap seal of a centrifugal pump. The experimental research allowed to obtain the characteristics? performance of the multi-gap seal at different o...

ACS Style

Oleksandr Pozovnyi; Andriy Zahorulko; Jan Krmela; Artem Artyukhov; Vladimíra Krmelová. Calculation of the Characteristics of the Multi-gap Seal of the Centrifugal Pump, in Depend-ence on the Chambers' Sizes. Manufacturing Technology 2020, 20, 361 -367.

AMA Style

Oleksandr Pozovnyi, Andriy Zahorulko, Jan Krmela, Artem Artyukhov, Vladimíra Krmelová. Calculation of the Characteristics of the Multi-gap Seal of the Centrifugal Pump, in Depend-ence on the Chambers' Sizes. Manufacturing Technology. 2020; 20 (3):361-367.

Chicago/Turabian Style

Oleksandr Pozovnyi; Andriy Zahorulko; Jan Krmela; Artem Artyukhov; Vladimíra Krmelová. 2020. "Calculation of the Characteristics of the Multi-gap Seal of the Centrifugal Pump, in Depend-ence on the Chambers' Sizes." Manufacturing Technology 20, no. 3: 361-367.

Journal article
Published: 07 September 2020 in Manufacturing Technology
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ACS Style

Alžbeta Bakošová; Jan Krmela; Marián Handrik. Computing of truss structure using MATLAB. Manufacturing Technology 2020, 20, 1 .

AMA Style

Alžbeta Bakošová, Jan Krmela, Marián Handrik. Computing of truss structure using MATLAB. Manufacturing Technology. 2020; 20 (3):1.

Chicago/Turabian Style

Alžbeta Bakošová; Jan Krmela; Marián Handrik. 2020. "Computing of truss structure using MATLAB." Manufacturing Technology 20, no. 3: 1.

Book chapter
Published: 01 July 2020 in Current Drying Processes
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The main advantages regarding the convective drying of the granular materials in the multistage dryers with sloping perforated shelves were represented. Peculiarities of the shelf dryers’ hydrodynamics were shown in the research. Various hydrodynamic weighing modes were experimentally justified, and the relevant criteria equations were obtained. The results of investigations regarding the interphase heat and mass transfer were given; criteria dependencies, which predict heat and mass transfer coefficients in the shelf dryers, were proposed. A method to assess the efficiency of the dehydration process at the separate stages of the device and in the dryer, in general, was proposed. The algorithm to define the residence time of the granular material on the perforated shelf with a description of the author’s software product for optimization calculation was shown. The shelf dryers’ engineering calculation method was presented in this work. The original constructions of devices with various ways to control the residence time of the granular material that stays in their workspace were described. The testing results of the shelf dryer to dry granular materials, such as coarse- and fine-crystalline potassium chloride, sodium pyrosulfate, and iron and nickel powders, were demonstrated.

ACS Style

Artem Artyukhov; Nadiia Artyukhova; Ruslan Ostroha; Mykola Yukhymenko; Jozef Bocko; Jan Krmela. Convective Drying in the Multistage Shelf Dryers: Theoretical Bases and Practical Implementation. Current Drying Processes 2020, 1 .

AMA Style

Artem Artyukhov, Nadiia Artyukhova, Ruslan Ostroha, Mykola Yukhymenko, Jozef Bocko, Jan Krmela. Convective Drying in the Multistage Shelf Dryers: Theoretical Bases and Practical Implementation. Current Drying Processes. 2020; ():1.

Chicago/Turabian Style

Artem Artyukhov; Nadiia Artyukhova; Ruslan Ostroha; Mykola Yukhymenko; Jozef Bocko; Jan Krmela. 2020. "Convective Drying in the Multistage Shelf Dryers: Theoretical Bases and Practical Implementation." Current Drying Processes , no. : 1.

Conference paper
Published: 20 May 2020 in 20th International Scientific Conference Engineering for Rural Development Proceedings
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ACS Style

Jan Krmela; Alzbeta Bakosova; Vladimira Krmelova; Sylvain Sadjiep. Drone propeller blade material optimization using modern computational method. 20th International Scientific Conference Engineering for Rural Development Proceedings 2020, 1 .

AMA Style

Jan Krmela, Alzbeta Bakosova, Vladimira Krmelova, Sylvain Sadjiep. Drone propeller blade material optimization using modern computational method. 20th International Scientific Conference Engineering for Rural Development Proceedings. 2020; ():1.

Chicago/Turabian Style

Jan Krmela; Alzbeta Bakosova; Vladimira Krmelova; Sylvain Sadjiep. 2020. "Drone propeller blade material optimization using modern computational method." 20th International Scientific Conference Engineering for Rural Development Proceedings , no. : 1.

Journal article
Published: 02 April 2020 in IOP Conference Series: Materials Science and Engineering
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The article is devoted to the description of the complex method to design granulation unit, which is based on the joint use of the computer modeling results on the simulation models and software modeling based on author's software products. The description of the software package Granulation Unit© to carrying out the structural and technological calculations for the granulation unit is given. The role of computer and software modeling in the general design algorithm of the granulation unit is shown. The optimization criteria are selected and an algorithm of design optimization for granulation unit is described using the example of the "Vortex Granulator" case. A general method of granulation unit designing "turnkey" with the use of automated design elements is presented. The results of automated calculations form the base to design an industrial granulation unit for the porous ammonium nitrate production. On the example of a specific product of the granulation unit (porous ammonium nitrate), the author's software product is presented to determine the quality of the porous surface in the granule. This approach in modeling allows to create the automated systems for the optimization calculation of granulation equipment.

ACS Style

A Artyukhov; N Artyukhova; Jan Krmela; V Krmelová. Complex designing of granulation units with application of computer and software modeling: case “Vortex granulator”. IOP Conference Series: Materials Science and Engineering 2020, 776, 1 .

AMA Style

A Artyukhov, N Artyukhova, Jan Krmela, V Krmelová. Complex designing of granulation units with application of computer and software modeling: case “Vortex granulator”. IOP Conference Series: Materials Science and Engineering. 2020; 776 ():1.

Chicago/Turabian Style

A Artyukhov; N Artyukhova; Jan Krmela; V Krmelová. 2020. "Complex designing of granulation units with application of computer and software modeling: case “Vortex granulator”." IOP Conference Series: Materials Science and Engineering 776, no. : 1.

Conference paper
Published: 02 April 2020 in IOP Conference Series: Materials Science and Engineering
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ACS Style

P Skalková; A Dubec; J Pagáčová; Jan Krmela; J Martinec. Surface properties of non-black fillers. IOP Conference Series: Materials Science and Engineering 2020, 776, 1 .

AMA Style

P Skalková, A Dubec, J Pagáčová, Jan Krmela, J Martinec. Surface properties of non-black fillers. IOP Conference Series: Materials Science and Engineering. 2020; 776 ():1.

Chicago/Turabian Style

P Skalková; A Dubec; J Pagáčová; Jan Krmela; J Martinec. 2020. "Surface properties of non-black fillers." IOP Conference Series: Materials Science and Engineering 776, no. : 1.

Conference paper
Published: 02 April 2020 in IOP Conference Series: Materials Science and Engineering
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This work is focused on characterization of spinning process of PLA fibres. PLA polymer with high melting point was modified by two hydrolytic additives in amounts (0 and 1 wt. %). Fully drawn (FDY) PLA fibres were prepared by melt spinning technique in the company Chemosvit Fibrochem a. s. (Svit, Slovakia). Preparation of PLA fibres was done by two different processes of continuous and discontinuous type. Different drawing ratios, take-up speeds and spin finishes for optimal fibre properties were used. Physical and mechanical properties of prepared FDY fibres, such as elongation and tenacity were measured. Prepared PLA fibres with different hydrolytic additives were process able in manufacturing process and this material could be used for various textile and composite applications.

ACS Style

M Kleščík; B Bizubová; T Zatroch; A Balogová; L A R Pedraza; P Skalková; V Krmelová; Jan Krmela; E Muks; L V Der Scheuren. Research and application of PLA fibres. IOP Conference Series: Materials Science and Engineering 2020, 776, 1 .

AMA Style

M Kleščík, B Bizubová, T Zatroch, A Balogová, L A R Pedraza, P Skalková, V Krmelová, Jan Krmela, E Muks, L V Der Scheuren. Research and application of PLA fibres. IOP Conference Series: Materials Science and Engineering. 2020; 776 ():1.

Chicago/Turabian Style

M Kleščík; B Bizubová; T Zatroch; A Balogová; L A R Pedraza; P Skalková; V Krmelová; Jan Krmela; E Muks; L V Der Scheuren. 2020. "Research and application of PLA fibres." IOP Conference Series: Materials Science and Engineering 776, no. : 1.