MM Science Journal, December 2023

A STRATEGY FOR REDUCING CARBON EMISSIONS IN A CITY USING A LOW-CARBON STRATEGY - A CASE STUDY

MIROSLAV RIMAR, MARCEL FEDAK, ANDRII KULIKOV, JAN KIZEK, MICHAL SMAJDA
Keywords: Low-carbon strategy | GHG | emissions | CO2

Various environmental policies are created on the basis of scientific knowledge in the sectors of energy, climate and transport. An important role has the Paris Agreement with the aim of limiting the increase in global temperature. The commitments regarding climate neutrality within the framework of "Fit for 55" are important. One of the principles of how to approach the reduction of CO2 emissions withi (…)

NON-MINIMUM PHASE SYSTEMS

LUKAS LESTACH, LUBICA MIKOVA, ERIK PRADA, IVAN VIRGALA, LEO BRADA
Keywords: manipulator | minimum phase | non-minimum phase | mathematical model | control of dynamic system

The aim of this paper is to create a mathematical model of a manipulator of a dynamic system with a non-minimum phase. The first introductory part of the paper deals with the actual problem of manipulator control. The second part deals with the control of dynamic systems and the formulation of the control problem. The third and last section deals with the construction of the mathematical model of the ma (…)

ERGONOMICS AS A TOOL FOR REDUCING THE PHYSICAL LOAD AND COSTS OF THE COMPANY

PETRA MARKOVA, MARIA HOMOKYOVA, VANESA PRAJOVA, MARTINA HORVATHOVA
Keywords: employee | physical load | industry 4.0 | risk group | company costs

The article's subject is to indicate ergonomic tools, which create room for saving costs for the enterprise by targeting the management of the workforce through influencing the degree of risk of physical load. The ergonomic solutions take into account people as a priority. People spend a large part of their lives at work, and there is an increased emphasis on productivity, quality and efficiency. Howeve (…)

COMBINED ENERGY SYSTEMS BASED ON RENEWABLE ENERGY SOURCES

LAYTH MOHAMMED ABDALI, MUATAZ NAJIM AL–MALIKI, RASHID HAMEED HEJEEJO, HAYDER ABDULSAHIB ISSA, BORIS A. YAKIMOVICH, SERGEY E. SHCHEKLEIN, VLADIMIR I. VELKIN, VLADIMIR V. KUVSHINOV
Keywords: Renewable energy | Photovoltaic array | P–V And I–V Curve | Wind power plant | Wind-Diesel system | Combined energy

Ensuring the quality of energy supply to remote regions is relevant for grid companies and the state. One of the solutions to this problem is the use of renewable energy sources to generate electrical energy. Given this, the article considers an integrated approach to designing combined autonomous energy systems of an individual residential building based on renewable energy sources with the complete re (…)

BIBLIOMETRIC ANALYSIS: INTERCONNECTIONS BETWEEN SUSTAINABILITY AND ENTERPRENEURSHIP

HELENA FIDLEROVA, NATALIA VRANAKOVA, AUGUSTIN STARECEK, PAULA BAJDOR
Keywords: sustainability | sustainable development | SDGs | organization | entrepreneurship | bibliometric analysis

Based on a bibliometric study, this article analyses the interconnections between organization and sustainability. Using VOSviewer, 1046 articles written in English published in journals in the scientific database WOS published from 2015 to 2022 were retrieved. Specifically, we present the number of publications over the years, the areas to which the publications belong, the authors, the journals, and a (…)

EXPERIMENTAL VALIDATION OF THE EFFECT OF PISTON SPEED ON THE HOMOGENEITY OF DIE CASTINGS

MIROSLAV RIMAR, MARCEL FEDAK, ANDRII KULIKOV, JAN KIZEK, TIBOR KRENICKY, JAROSLAV PAVEL
Keywords: Diecasting | pressure casting | casting parameters | homogeneity

One of the most progressive technologies in foundry is die casting, where a significant part is formed by die casting of castings of a lower weight category. In the case of castings cast by pressure casting technology, one of the important quality indicators is the internal quality of the casting presented by internal defects. In addition to the alloy used, the shape of the mold and the filling chamber (…)

THE DESIGN OF ELEMENTS OF AN ADAPTIVE ASSEMBLY SYSTEM

MARTIN KRAJCOVIC, LUBOSLAV DULINA, VLADIMIRA BINASOVA, JAN ZUZIK
Keywords: Adaptability | Components | Cobot | Assembly worker

The paper is an overview of the design of elements of an adaptive assembly system. Furthermore, this paper seeks to address with analysis and evaluation of the elements of the adaptive assembly system. The work presents a taxonomy in the field of adaptive assembly. The core of the work consists of the design of the architecture of individual systems. It is necessary to broaden knowledge about this topic (…)

AVIATION FUEL STOREHOUSE FIRE MODELLING FOR EMERGENCY PLANNING PURPOSES

JURAJ GLATZ, ZUZANA KOTIANOVA
Keywords: Aviation fuel | modelling | emergency planning

As a potential source of a major accident, aviation fuel tanks represent a potential source of danger not only for the airport but also for businesses in the vicinity of the airport. Fire is one of the main hazards associated with the operation of fuel storage tanks. Depending on the type of storage tanks, there may be a fire in the tank itself or a fire in the bund. An important factor in an actual fir (…)

AN EFFICIENT METHOD TO SIMULATE THE VARYING STATIC RECEPTANCE OF A THIN-WALLED WORKPIECE

CHRISTIAN BRECHER, GUIFENG ZHAO, MARCEL FEY
Keywords: thin-walled workpiece | static receptance | Cholesky decomposition | finite element simulation | permutation

A new method to simulate the varying static receptance of a thin-walled workpiece based on the Cholesky decomposition is presented in this paper. In this method, the system stiffness matrix is updated by subtracting the elemental stiffness matrices of the removed elements from the initial system stiffness matrix. The updated system stiffness matrix is permuted by using a novel method based on element re (…)

PROCESS DESIGN FOR MICROMILLING OF STOCHASTICALLY DISTRIBUTED BIONIC SURFACE STRUCTURES

ALEXANDER LEONARD MEIJER, TIMO PLATT , TORBEN MERHOFE, DIRK BIERMANN
Keywords: Bionic surface structures | micromilling | design of NC-programs | free-form machining | Poisson-Disk sampling

The process design for the manufacturing of surface structures with functional tribological properties is a major challenge when machining workpieces with freeform surfaces. Distortion effects of the structures and limitation of CAD/CAM-systems require the development of novel technological solutions. The paper presents a new approach for designing the machining processes of functional textures on freef (…)

THE INTEGRATION OF HR INFORMATION SYSTEMS UTILIZATION IN INDUSTRIAL ENTERPRISES

ZDENKA GYURAK BABELOVA, NATALIA VRANAKOVA, AUGUSTIN STARECEK
Keywords: Decision making | employees | human resources information system (HRIS) | industrial enterprises | integration

Human resource management (HRM) is of strategic importance for the management of organizations, therefore management measures in the field of HRM are of considerable importance for the performance of any organization. For the management of HR in the organization, it is important to have an information system that provides timely and reliable information necessary for decision-making. The article is focu (…)

SUPPORTING MANUAL CONTOUR AND SURFACE PROCESSING WITH THE HELP OF AUGMENTED REALITY

MATTHIAS MÜHLBAUER, ALEXANDER AUER, HUBERT WÜRSCHINGER, NICO HANENKAMP
Keywords: Augmented Reality | assistance system | object detection | manual processes | contour and surface processing | deburring

When manually processing complex contours or surfaces, there is a risk of incomplete or unnecessary multiple processing. The support of such processes with an augmented reality (AR) application will be presented in this work using the example of manual deburring. Firstly, the positions of the component and tool are determined based on camera recordings. For this purpose, approaches for 6 Degrees of Fre (…)

THE IMPORTANCE OF APPLYING SELECTED INDUSTRIAL ENGINEERING TOOLS AND METHODS IN PROCESS IMPROVEMENT

VANESSA PRAJOVA, KATARINA LESTYANSZKA SKURKOVA, FILIP PRAJ, VIERA BESTVINOVA
Keywords: process | capability | scale | production equipment | tools and methods of industrial engineering

Among the key activities of managing an organisation is to be able to make timely and correct decisions. Making the right decision is necessary to ensure the organisation's competitiveness [Lestyanszka 2014a]. Organisations are trying to reduce production costs as much as possible, but this, on the other hand, brings negatives in the form of products that do not meet customer expectations. This phenomen (…)

DESIGN AND CRANK TRAIN DYNAMICS OF VARIOUS APPROACHES TO CYLINDER DEACTIVATION SYSTEM FOR SPARK-IGNITION ENGINES

KATERINA FRIDRICHOVA, LUBOMIR DRAPAL, MICHAL PUSKAR
Keywords: Selective cylinder deactivation | rolling cylinder deactivation | torsional vibration | switchable pivot element | movable cam sections

Due to the fact that emission reduction has become an important topic and due to the upcoming EURO 7 standard, the automotive industry is focusing on reducing the carbon footprint. One of the ways to do so is enhancing the efficiency of internal combustion engines by technologies such as cylinder deactivation. This technology offers fuel economy benefit, therefore, also CO2 emission reduction. However, (…)

RECOGNITION OF OBJECT PROPERTIES BASED ON PASSIVE TRIANGULATION AND 2D CAMERA SYSTEM

MAREK VAGAS
Keywords: 2D camera system | triangulation | detection of the picture

Every advanced knowledge about the process, object, or workplace is fundamental. It concerns current trends (digitalization, automation, intelligent industry) and the need to fill the missing technological gaps. Their goal is to increase quality and competitiveness. Therefore, this article aims to present a framework of the systematic approach as an affordable way to obtain relevant information about th (…)

COMPARISON OF FRICTION MODELS IN THE JOINTS OF AN EXPERIMENTAL MANIPULATOR WITH 3-DOF

TOMAS CAKURDA, MONIKA TROJANOVA, ALEXANDER HOSOVSKY, PAVLO POMIN
Keywords: Experimental manipulator | Friction models | Estimation | Validation

The article is devoted to the identification of friction in the joints of a 3-DOF manipulator with fluidic muscles. For the identification of friction, four different models were proposed, namely linear friction model, extended friction model, non-linear friction model and LuGre model. The values of the coefficients of the proposed models were estimated in the Matlab Simulink program environment based o (…)

LINKING INFORMATION TECHNOLOGY TO THE DIGITAL ENTERPRISE PLATFORM

FILIP PRAJ
Keywords: process | ERP system | interconnection | digital enterprise

Effective business management is based on the use of relevant information. To be useful, information must be available in the right quantity, quality, place and time. In an enterprise, this function is often provided by an information system. The enterprise information system is one of the key factors for the competitiveness of not only large and multinational companies but also small and medium-sized e (…)

INVERSE AND FORWARD KINEMATICS AND DYNAMICS OF A TWO LINK ROBOT ARM

DARINA HRONCOVA, PATRIK SARGA, PETER JAN SINCAK, TOMAS MERVA, LEO BRADA
Keywords: Robot | trajectory | computer simulation | Kinematics | dynamics | forward | inverse | Matlab | Simulink

This paper deals with the kinematic and dynamic analysis of a two-element robot model. We have solved the problem using inverse kinematics. The result is the plotted trajectory of the robot's end point along defined points of the robot's workspace. The angular quantities computed are the rotation angle, angular velocity and angular acceleration in each kinematic pair. Furthermore, an inverse dynamics pr (…)

MODEL-BASED METHODOLOGY FOR DESIGNING AUTOMATED WORKPLACES

ERIK PRADA, MARTIN VARGA, IVAN VIRGALA, ĽUBICA MIKOVA, MICHAL KELEMEN
Keywords: pressure sensor | gauges | uncertainty | calibrator

The article deals with model-based methodology for designing automated workplaces with control systems using programmable logic controllers. A categorization of some development methodologies and simulations of automated system control is presented. In the case study, a model of the controlled system is created, which is used for control simulations of the designed control system. The developed control (…)

DECISION-MAKING SUPPORT TECHNOLOGIES USING THE CAD/CAM/CAE SYSTEM DESIGN AND MANUFACTURE OF BONE SUBSTITUTES WITH FUNCTIONAL PROPERTIES

ANTON PANDA, KOSTIANTYN DYADYURA, IGOR PROKOPOVICH
Keywords: Tissue engineering | three-dimensional (3D) | bone scaffold | computer-aided design (CAD) | topology optimization (TO) additive manufacturing

Currently, the use of additive technologies for the production of bone substitutes determines the effectiveness of the latest methods of treatment and prosthetics in traumatic surgery, oncology, crania-maxillofacial surgery, dentistry, etc. The introduction of additive technologies is the result of the integration of medical visualization, in particular, based on the technologies of computer imaging, an (…)

VIBRATION PREDICTION BASED ON PRESENTING IT PREPARATION PERIOD AS A BLUE-UP PROCESS

ANTON PANDA, VOLODYMYR NAHORNYI, PETR PIGULEVSKIY
Keywords: Trend of the amplitude | blue-up process | forecast model | shocks environment criticality

The method of forecasting vibrations is considered. The technique is based on the assumption that the vibration preparation process can be attributed to the processes developing in the blowup mode. The properties of the technique are demonstrated on the example of a retro forecast of vibrations that took place in Turkey on February 6 and 20, 2023. The results of testing the methodology confirmed the ass (…)

FRICTION STIR WELDING (FSW) APPLICATION TO JOINTS ALUMINUM FOR SEVERAL RADIUS

Widia Setiawan, Nugroho Santoso, Dr. Wiyadi, Irfan Bahiudin, Dr. Harjono, Felixianus Eko Wismo Winarto, Achsan Tarmudi
Keywords: Friction Stir Welding | pin | probe | Butt | Radius

The FSW solid weld joint method can be used to joint several radius joints, which will be investigated for the strength of welded joints with 6061 aluminum material. with a size of 100 mm x 250 mm and a thickness of 5 mm, cut into a radius of 700mm, 900mm, 1000 mm, 1100mm, 1200 mm, and 1500 mm. The butt joint is joined by the friction stir welding (FSW) method using a milling machine. This experiment wa (…)