Search results
Title Investigating the pressure distribution on uneven surfaces using an educational robot for development of ergonomic school furniture Author info Daniel Novák, Viktor Novák ... [et al.] Author Novák Daniel 1952- (25%) UMBFP07 - Katedra techniky a technológií
Co-authors Novák Viktor 1982- (25%)
Voštinár Patrik 1988- (25%) UMBFP05 - Katedra informatiky
Volf Jaromír 1954- (25%)
Source document Manufacturing Technology : Journal for Science, Research and Production. Vol. 24, no. 1 (2024), pp. 98-103. - Ústí nad Labem : Univerzita Jana Evangelisty Purkyně v Ústí nad Labem, 2024 Keywords vyučovací proces - teaching process vzdelávacie techniky roboty - robots senzory - sensors Form. Descr. články - journal articles Language English Country Czech Republic URL Link na zdrojový dokument Link na plný text Public work category ADM No. of Archival Copy 54407 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
article
Title Computer simulation of heating cycle of aluminum alloys using friction stir welding technology Author info Petra Kvasnová ... [et al.] Author Kvasnová Petra 1978- (55%) UMBFP07 - Katedra techniky a technológií
Co-authors Novák Daniel 1952- (25%) UMBFP07 - Katedra techniky a technológií
Novák Viktor 1982- (15%)
Ďuriš Milan 1954- (5%) UMBFP07 - Katedra techniky a technológií
Source document Manufacturing Technology : Journal for Science, Research and Production. Vol. 23, no. 1 (2023), pp. 47-52. - Ústí nad Labem : Univerzita Jana Evangelisty Purkyně v Ústí nad Labem, 2023 Keywords zváranie - welding hliník simulácia - simulation Form. Descr. články - journal articles Language English Country Czech Republic Annotation The paper deals with welding of aluminum alloys using Friction Stir Welding technology. This represents one of the solid-state welding technologies in which the base materials are not melted. This welding method provides new possibilities for the use of special and hybrid manufacturing technologies. The article first presents an overview and the current progress in the Friction Stir Welding technology. Further, the key attributes of the technology are stated, focusing on the individual weld microstructure zones and their characteristics. Subsequently, a computer simulation of the FSW thermal cycle of an aluminum alloy specimen was designed in the program Ansys; the simulation provides the distribution of the temperature fields within the welded material. The simulated temperature fields are compared with a real weld joint, and possible defects are pointed out. Finally, the results of the computer simulation and of the visual analysis of the real weld joint are summarized and discussed. URL Link na zdrojový dokument Public work category ADM No. of Archival Copy 53083 Repercussion category CHOCHLIKOVA, Henrieta - MAJERIK, Jozef - BARENYI, Igor - GAVALEC, Matus - ESCHEROVA, Jana - PECANAC, Milan - RAJNOVIC, Dragan - BALOS, Sebastian - KOHUTIAR, Marcel. Research on FSW welds of Al-alloy modified by laser shock peening process. In Manufacturing technology. ISSN 1213-2489, 2024, vol. 24, no. 1, pp. 53-61.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika article
Title Evaluation of electrical resistance of electrodes with conductive ink for agriculture applications using computer technology Author info Viktor Novák, Jaromír Volf ... [et al.] Author Novák Viktor 1982- (5%)
Co-authors Volf Jaromír 1954- (10%)
Novák Daniel 1952- (70%) UMBFP07 - Katedra techniky a technológií
Vrbík Václav (5%)
Ryženko Vladimír (5%)
Stebila Ján 1979- (5%) UMBFP07 - Katedra techniky a technológií
Source document Research in agricultural engineering. Vol. 68, no. 4 (2022), pp. 194-200. - Praha : Česká akademie zemědělských věd, 2022 Keywords elektródy senzory - sensors pneumatiky Form. Descr. články - journal articles Language English Country Czech Republic Annotation The article presents the ongoing research, which aims to select suitable electrodes and mixtures of conductive inks, which will be used as a converter between the pressure and electrical quantities in the design of planar pressure transducers. In the described research, we continue our previous work and the work of other authors who have previous ly dealt with the properties of conductive inks and electrodes. Due to the only partial results in the given field, we decided to perform an extensive and original measurement of a total of 172 combinations of different electrode sizes, various conductive ink mixtures and ink layer thicknesses. Thanks to this, it will be possible, in the future, to select a suitable combination of electrodes and inks when designing pressure sensors for industrial and agricultural applications without the need to perform time-consuming preparatory measurements. The aim of the measurements is also to determine the usable working range of the pressures and the corresponding sensitivity for certain combinations of electrodes and inks, and to also exclude those variants which are unsuitable for the given purposes. This paper presents the introductory part of the measurements, which aims to verify the methodology of the measurements on a test plate at robotised workspace that is connected to a PC in real time via the program LabView. The described introductory measurements proved our methodology to be suitable to the given purpose; however, there minor problems emerged with the actual working pressure range of the transducer and the consequential necessary adjustments of the control program. URL Link na zdrojový dokument Public work category ADM No. of Archival Copy 52511 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika article
Title Measurement of static forces up to 50 N using piezo ceramics PZK 850 Author info Jaromír Volf, Viktor Novák ... [et al.] Author Volf Jaromír 1954- (10%)
Co-authors Novák Viktor 1982- (5%)
Stebila Ján 1979- (5%) UMBFP07 - Katedra techniky a technológií
Kvasnová Petra 1978- (5%) UMBFP07 - Katedra techniky a technológií
Ryženko Vladimír (5%)
Novák Daniel 1952- (70%) UMBFP07 - Katedra techniky a technológií
Source document Measurement : Journal of the International Measurement Confederation. Vol. 176 (2021), pp. [1-5]. - Oxford : Elsevier Ltd., 2021 Keywords sila - force merania - measurements Form. Descr. články - journal articles Language English Country Great Britian Annotation The article deals with a piezoelectric force sensor, that bases on the use of piezo ceramics PZK 850. These types of sensors were used due to characteristic of the piezo-material (i.e. crystal) particularly for dynamic force measurement only. The developed sensor is suitable to measure static forces up to 50 N; the principle of the measurement of static forces bases on the crystal vibration being damped with the acting static force, whereby corresponding resonance frequencies are determined. The article describes the physical principle of the operation and the technical design of the sensor; there are presented two slightly different variations of the sensor. Further there are stated basic calculations of the sensor parameters and of the corresponding resonance frequencies. Finally, individual force-voltage characteristics are determined and respective results and possible use of such types of sensors are discussed. URL Link na plný text Public work category ADC No. of Archival Copy 50202 Repercussion category CASTANO-CANO, Davinson - GROSSARD, Mathieu - HUBERT, Arnaud. Resonant sensors for multi-axis force and torque estimation in collaborative robotics. In Mechatronics. ISSN 0957-4158, 2022, vol. 82, art. no. 102703, pp. 1-14.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika article
Title Optimization of vehicles' trajectories by means of interpolation and approximation methods in education in technical fields of study Author info Ladislav Rudolf ... [et al.] Author Rudolf Ladislav (25%)
Co-authors Novák Daniel 1952- (25%) UMBFP07 - Katedra techniky a technológií
Pavlovkin Ján 1955- (25%) UMBFP07 - Katedra techniky a technológií
Novák Viktor 1982- (25%)
Source document Journal of Education, Technology and Computer Science. Roč. 31, č. 1 (2020), s. 36-45. - Rzeszów : Wydawnictwo Uniwersytetu Rzeszowskiego, 2020 Keywords dopravné prostriedky - means of transportation trajectory optimization interpolation curves approximation curves Form. Descr. články - journal articles Language English Country Poland Annotation The need to optimize the trajectory of vehicles is still highly topical, regardless weather the means of transport are robots, forklifts or road vehicles. It is not only important the safety by passing obstacles, but also the energy balance, i.e. the energy expended on the movement of the vehicle and on the change of its direction. This paper presents a mathematical approach to solving this problem through interpolation and approximation curves. This is a very important scope of knowledge for the education of future engineers. Public work category ADE No. of Archival Copy 48724 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References (1) - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika article
Title Evaluation of foil transducers and their use in tactile sensors Author info Jaromír Volf, Daniel Novák ... [et al.] Author Volf Jaromír 1954- (25%)
Co-authors Novák Daniel 1952- (25%) UMBFP07 - Katedra techniky a technológií
Novák Viktor 1982- (25%)
Papežová Stanislava (25%)
Source document Measurement : Journal of the International Measurement Confederation. Vol. 136, (2019), pp. 573-578. - Oxford : Elsevier Science Ltd., 2019 Keywords conductive ink tactile sensors pressure distribution Form. Descr. články - journal articles Language English Country Great Britian systematics 62 Annotation The article presents end evaluates foil transducers, namely conductive rubber and conductive ink, and their use in the pressure distribution measurement system Plantograf. The ability of both materials to act as transducer between pressure and electrical quantities is assessed by means of measurement on a robotized workspace; two electrode types and various ink layer thicknesses are studied. Basing on the measurements, we present graphically the dependency of the electrical resistance of the materials on the applied pressure. Although both materials proved their ability to act as a transducer in a planar sensor, they both exhibit some limitations. In case of rubber it is limited pressure range up to ca. 1 400 kPa and significant hysteresis of the material. The main limiting factor with conductive ink is its poor adherence to the electrodes, which poses important problem for its practical use, although this material evinces better transfer characteristics, particularly in the configuration with 7 μm ink layer and LD type electrode. URL Link na plný text Public work category ADC No. of Archival Copy 44776 Repercussion category AFRICA, Aaron Don M. - BARRIENTO, Josephine F. - BEA, Anna Mae T. - DELOSREYES, Chris Vincent F. - MALLARI, Maveric P. Development of an alternative source of power in an octopus ride using kinetic energy. In ARPN : journal of engineering and applied sciences. ISSN 1819-6608, 2019, vol. 14, no. 22, pp. 3804-3814.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
unrecognised
Title Plantograf V18 - new construction and properties Author info Petr Koder ... [et al.] Author Koder Petr (15%)
Co-authors Novák Viktor 1982- (20%)
Ryzhenko Volodymyr (15%)
Hrubý Dušan (15%)
Volf Jaromír 1954- (20%)
Novák Daniel 1952- (15%) UMBFP07 - Katedra techniky a technológií
Source document Agronomy Research. Vol. 16, special no. 1 (2018), pp. 1085-1094. - Tartu : Estonian University of Life Sciences, 2018 Keywords transducer pressure senzory - sensors Language English Country Estonia systematics 62 Annotation Článok opisuje plošný prevodník tlaku Plantograf V18. Tento prístroj prevádza vyvinutý tlak na podložku na elektrický signál a umožňuje následnú grafickú prezentáciu nameraných dát. Nová verzia V18 tohto prevodníku prichádza s významnými zlepšeniami a modifikáciami, ktoré sú podrobnejšie diskutované v článku. Prístroj má praktické využitie vo všetkých oblastiach, kde je potrebné určiť plošné rozloženie tlaku medzi objektom a podložkou, napr. v medicíne alebo v automobilovom priemysle. Článok podrobne opisuje elektronický ovládací systém prevodníku, a ďalej zatiaľ nepublikované merania s 3,5 mm elektródami. The article describes Plantograf V18, a planar tactile transducer, which converts the applied pressure into electric signal and enables a graphical presentation of the measured data; the new version V18 comes with some significant improvements and modifications. The device may be used everywhere where the pressure distribution between an object and surface is to be determined, e.g. in medicine or automotive industry. The article contains the detailed description of the transducer design and its electronic control circuits, as well as the yet unpublished measurements of pressure sensitivity with 3.5 mm electrodes URL Link na zdrojový dokument Link na plný text Public work category ADM No. of Archival Copy 42941 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Hardness tests and dimensional and shape precision analysis of construction and agricultural machinery components Author info Petra Kvasnová ... [et al.] Author Kvasnová Petra 1978- (25%) UMBFP07 - Katedra techniky a technológií
Co-authors Kučerka Martin 1980- (25%) UMBFP07 - Katedra techniky a technológií
Hrubý Dušan (20%)
Novák Daniel 1952- (20%) UMBFP07 - Katedra techniky a technológií
Novák Viktor 1982- (10%)
Source document Manufacturing Technology : Journal for Science, Research and Production. Vol. 18, no. 6 (2018), pp. 943-949. - Ústí nad Labem : Univerzita Jana Evangelisty Purkyně v Ústí nad Labem, 2018 Keywords tvrdosť oceľ inžinierstvo poľnohospodárske stroje - agricultural machines Language English Country Czech Republic systematics 620.1/.2 Public work category ADM No. of Archival Copy 44036 Repercussion category VAŠKO, Alan - SOVÍK, Ján - SEDLIAČKOVÁ, Zuzana. Accuracy of portable hardness testers. In Manufacturing technology. ISSN 1213-2489, 2019, vol. 19, no. 5, pp. 886-890.
SULTANA, Jakiya - SZTANKOVICS, István. Roundness error and topography of hard turned surfaces. In Cutting and tools in technological system. ISSN 2078-7405, 2023, no. 98, pp. 83-92.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Laser welding of aluminium alloys Author info Petra Kvasnová, Daniel Novák, Viktor Novák Author Kvasnová Petra 1978- (34%) UMBFP07 - Katedra techniky a technológií
Co-authors Novák Daniel 1952- (33%) UMBFP07 - Katedra techniky a technológií
Novák Viktor 1982- (33%)
Source document Manufacturing Technology : Journal for Science, Research and Production. Vol. 17, no. 6 (2017), pp. 892-898. - Ústí nad Labem : Univerzita Jana Evangelisty Purkyně v Ústí nad Labem, 2017 Keywords hliník zváranie - welding mikroskopia - microscopy Language English Country Czech Republic systematics 62 Annotation Zváranie laserovým lúčom je priemyselnou technológiou, ktorá zaznamenala významný vývoj od počiatočných fáz až po súčasnosť. Riadenie technologických procesov zaisťuje vysokú kvalitu výrobkov a zvyšuje produktivitu a konkurencieschopnosť. Cieľom výskumu bolo určenie vplyvu zváracích parametrov pri zváraní vláknovým laserovým lúčom na kvalitu zvarových spojov hliníka. Na základe prezentovaných metód hodnotenia kvality a počítačovej simulácie boli vyhodnotené vzorky zvarových spojov. V závere je diskusia o optimálnych parametroch a podmienkach zvárania umožňujúcich výrobu zvarov požadovaných vlastností. Laser beam welding is an industrial technology that has seen a significant development from the early stages up to the present. Technological process management ensures high product quality as well as enhanced productivity and competitiveness. The aim of the research is to determine the impact of welding parameters by fiber laser beam on the quality of weld joints from aluminium. Basing on the presented quality assessment methods and computer simulation, we evaluate the weld joint samples. Finally, we discuss optimal welding parameters and conditions allowing the production of weld joints of the desired properties Public work category ADM No. of Archival Copy 41447 Repercussion category IGAZ, Rastislav - KMINIAK, Richard - KRIŠŤÁK, Ľuboš - NĚMEC, Miroslav - GERGEĽ, Tomáš. Methodology of temperature monitoring in the process of CNC machining of solid wood. In Sustainability (Switzerland). ISSN 2071-1050, 2019, vol. 11, no. 1, pp. 1-11.
KORČOK, Michal - KOLEDA, Peter - BARCÍK, Štefan - OČKAJOVÁ, Alena - KUČERKA, Martin. Effect of technological and material parameters on final surface quality of machining when milling thermally treated spruce wood. In BioResources. ISSN 1930-2126, 2019, vol. 14, no. 4, pp. 10004-10013.
NACHTNEBL, Pavel - KOLAŘÍK, Ladislav - FOREJTOVÁ, Lucie - REISGEN, Uwe - BEHR, Wilfried. Ultrasonic testing of diffusion bonded joints of AlMg3. In Manufacturing technology. ISSN 1213-2489, 2018, vol. 18, no. 2, pp. 289-294.
PELIT, Huseyin - KORKMAZ, Mustafa - BUDAKÇI, Mehmet. Surface roughness of thermally treated wood cut with different parameters in CNC router machine. In Bioresources. ISSN 1930-2126, 2021, vol. 16, no. 3, pp. 5133-5147.
KOLEDA, Pavol - KOLEDA, Peter - HRČKOVÁ, Mária - JÚDA, Martin - HORTOBÁGYI, Áron. Experimental granulometric characterization of wood particles from CNC machining of chipboard. In Applied sciences. ISSN 2076-3417, 2023, vol. 13, no. 9, pp. 1-15.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Possibilities of using knowledge of fractal geometry in the study of stainless steel defects in engineering technology Author info Veronika Klopanová ... [et al.] Author Nováková Veronika 1992- (25%) UMBFP10 - Katedra matematiky
Co-authors Novák Viktor 1982- (25%)
Kvasnová Petra 1978- (25%) UMBFP07 - Katedra techniky a technológií
Novák Daniel 1952- (25%) UMBFP07 - Katedra techniky a technológií
Source document ERIN 2017 : education - research - inovation, papers proceedings 11th international conference for young researchers and PhD students, Ústí nad Labem, 17. - 18. 5. 2017. S. 280-287. - Ústí nad Labem : Univerzita Jana Evangelisty Purkyně v Ústí nad Labem, 2017 ; ERIN 2017 education - research - inovation, international conference for young researchers and PhD students Keywords fraktálna dimenzia - fractal dimension trhliny lomy RTG mikroanalýza fraktografia - fractography cracks Language English Country Czech Republic Annotation Fractal geometry is currently used in the natural sciences, social sciences, and also in technology. The article focuses on the possibilities of its use in material technology for studying cracks and fractures in Cr-Ni stainless steels. Within the presented research, we first determine chemical composition of inspected steel samples using RTG line scan. Further we demonstrate use of fractal geometry to study the shape of cracks, as a suitable math-ematical method describing objects of irregular shapes. If the conditions of self-similarity are met, then fractal geometry can describe various curved geometric shapes, such as crack and fractures. This method may further help to determine the causes of these disorders and their initiation. Public work category AFC No. of Archival Copy 39821 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ unrecognised