THE POSITION OF THE JOINTS WITH ANGLE OF 900 AT FRICTION STIR WELDING (FSW)

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201717
WIDIA SETIAWAN1,2, DJAROT  B. DARMADI2,  WAHYONO SUPRAPTO2, RUDY SOENOKO2
1Sekolah Vokasi of Gadjah Mada University, Yogyakarta, Indonesia
2University Brawijaya Malang, Indonesia

e-mail: widia_s@.ugm.ac.id, widia_setiawan64@yahoo.co.id
Abstract
This research was use aluminum 6061 with 150 mm length, 50 mm wide, and 10 mm thick. The probe was made from EMS 45 simple design. Three variations used of feedrate speed  is 10 mm/min, 15 mm/min, and 30 mm/min. Spindle rotation constantly set 2000 rpm, the heat generated was recorded. Corner-Butt (C-B)joint determined, the lowest heat generated from 2200C-3200C and the tensile test was60 MPa. The highest tensile testwas 163 MPa, achieved by Corner-butt 45 (C-B 45) joint on 10 mm/min feedrate speed. It was verified by the heat temperature from 3000C-4200C and clarified by its micro and macrostructure.
Keywords: Friction Stir Welding, Corner-Butt Joint 450, Corner –Butt,Feedrate, Aluminum 6061
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AUXILIARY DEVICE FOR ACCURATE MEASUREMENT BY THE SMARTVISION SYSTEM

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201722
KAMIL ZIDEK1, VLADIMIR VASEK2, JAN PITEL1, ALEXANDER HOSOVSKY1
1Technical University of Kosice, Faculty of Manufacturing Technologies with a seat in Presov, Slovak Republic
2Tomas Bata University in Zlin, Faculty of Applied Informatics Zlin, Czech Republic

e-mail:kamil.zidek@tuke.sk
Abstract
The article deals with the design of equipment for accurate measurement or checking linear dimensions using a smart vision system. Commercial smart vision systems can not accurately measure large linear dimensions because the precision of the camera sensor decreases with distance from measured object. The main benefit of the proposed solution is the possibility of continuous measuring in production lines with high precision even for very long dimensions.
Keywords: automation, vision systems, measuring
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DIAGNOSTICS OF SELECTED SURFACE CHARACTERISTICS WITH LASER PROFILOMETRY

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201728
JURAJ RUZBARSKY, GERHARD MITAL
Institute of manufacturing technology, Department of operation of manufacturing processes, Presov, Slovak Republic

e-mail: juraj.ruzbarsky@tuke.sk, gerhard.mital@tuke.sk
Abstract
The paper is focused on the quality evaluation of the surface using the LPM laser profilometer. The measured sample was manufactured by Mitutoyo, Japan with surface roughness 2.94µm. The main goal was proper adujstment of the internal gain of the camera video signal (Gain mode) which affects the quality of the measured data. Measurement and evaluation show that the laser profile mode selection has a significant impact on the obtained data and depends on the type and character of the measured surface.
Keywords: profilometry, roughness, laser, non-contact, surface, measurement, technology, parameters
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EFFECT OF LOW BETA IRRADIATION DOSE ON MECHANICAL PROPERTIES OF SURFACE LAYER OF INJECTION MOULDED POLYAMIDE 11 (PA 11)

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201729
DAVID MANAS, MIROSLAV MANAS, LENKA GAJZLEROVA, MARTIN MIZERA
Tomas Bata University in Zlin, Zlin, Czech Republic

e-mail:dmanas@ft.utb.cz
Abstract
The influence of high doses of beta radiation on the changes in the structure and selected properties (mechanical and thermal) polymers were proved.  Using high doses of beta radiation for polyamide 11 (PA 11) and its influence on the changes of mechanical properties of surface layer has not been studied in detail so far. The specimens of polyamide 11 (PA 11) were made by injection moulding technology and irradiated by low doses of beta radiation (0, 33, 66 and 99 kGy). The changes in the microstructure and micromechanical properties of surface layer were evaluated using FTIR, WAXS and instrumented microhardness test. The results of the measurements showed considerable increase in mechanical properties (indentation hardness, indentation elastic modulus) when the high doses of beta radiation are used.
Keywords: Polyamide 11 (PA 11), cross-linking, micro-hardness, micro-mechanical properties, surface layer
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ELECTRON BEAM IRRADIATED POLYAMIDE MEASURED BY INDENTATION HARDNESS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201730
MARTIN OVSIK, MICHAL STANEK, VACLAV JANOSTIK, MARTIN REZNICEK
Tomas Bata University in Zlin, Zlin, Czech Republic

e-mail:ovsik@ft.utb.cz
Abstract
Cross-linking is a process in which polymer chains are associated through chemical bonds. Radiation, which penetrated through specimens and reacted with the cross-linking agent, gradually formed cross-linking (3D net), first in the surface layer and then in the total volume, which resulted in considerable changes in specimen behaviour. This research paper deals with the utilization of electron beam irradiated Polyamide 11 on the nano-indentation test. Radiation doses of 66, 132 and 198 kGy were used for unfilled PA with the 5% crosslinking agent (triallyl isocyanurate). The measurement results indicated that ionizing beta radiation was a very effective tool for improvement of indentation hardness, indentation modulus, indentation creep and deformation works of studied polymers. The best results were achieved by irradiation at doses of 132 kGy (increase about 31%) by which the highest nano-mechanical properties of PA11 were achieved.
Keywords: polyamide, electron beam, cross-linking, nano-hardness, indentation
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IMPROVING MANAGEMENT OF THE COMPANY THROUGH CRANFIELD PROCESS MODEL

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201733
ELENA DRABIKOVA1, JOZEF SVETLIK2
1Technical University of Kosice, Faculty of Mining, Ecology, Process Control and Geotechnology, Institute of Control and Informatization of Production Processes, Kosice, Slovak Republic
2Technical University of Kosice, Faculty of Mechanical Engineering, Department of Manufacturing Machinery, Kosice, Slovak Republic

e-mail: elena.drabikova@tuke.sk
Abstract
Performance of the company, regardless of the market sector where carries out its business, is closely linked to company's management processes at every level. The present paper is dedicated to the improvement concerning company management field. Significant and increasingly important part of the management process is project management. There may be considered two fundamental approaches - output oriented and benefit oriented. The paper examines the second one. In this context, progress can be achieved by using some of the multiple managerial tools or by their combination. The Cranfield process model was picked for reviewing as a method that is frequently and successfully applied in project benefits management. The emphasis was specifically given to a benefits realization plan and the fundamental tool for its creation - the benefits dependency network. On this basis, the proposal of the simplified model representing benefits dependency network for manufacturing company was offered.
Keywords: Cranfield process model, project management, benefits, benefits dependency network, benefits realization process
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MATHEMATICAL FORMULATION OF THE KINEMATIC EQUATIONS FOR THE CONTROL OF THE ROBOT SYSTEM WITH APPLICATION FOR THE MACHINING CONICAL SURFACES

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201736
STEFAN GASPAR, JAN PASKO
Technical University of Kosice, Faculty of Manufacturing Technologies, Department of Design Technical Systems, Presov, Slovak Republic
e-mail:stefan.gaspar@tuke.sk
Abstract
With the performance of various technological operations (welding, machining, etc.) it is necessary that the end member of a robot moves along the defined path and, at the same time, the tool fulfils certain criteria in relation to the machined surface. The aim of the article is to apply theoretical knowledge to derivation of kinematic equations of a robotic mechanism control, i.e. to the solution of an inverse problem. The substance of the problem consists it the fact that based on the required  position and orientation of the tool, it is necessary to determine the values of the generalized  coordinates in individual joints of a robot. The solving method of the presented problem is illustrated by the specific example, i.e. the movement of the end member of a robot with conical surfaces machining
Keywords: robotic mechanism, conical surface, orientation of a robot end element, transform matrix, inverse problem
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MECHANICAL PROPERTIES OF LOW DENSITY POLYETHYLENE (LDPE) IRRADIATED BY LOW DOSES BETA IRRADIATION MEASUREMENT BY ULTRA NANOINDENATION TEST

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201738
TOMAS FIALA, DAVID MANAS, MIROSLAV MANAS, LENKA GAJZLEROVA
Tomas Bata University in Zlin, Zlin, Czech Republic
e-mail: dmanas@ft.utb.cz
Abstract
The influence of low doses of beta radiation on the changes in the structure and selected properties (mechanical and thermal) polymers were proved.  Using low doses of beta radiation for low density polyethylene (LDPE) and its influence on the changes of mechanical properties of ultra nanohardness has not been studied in detail so far. The specimens of low density polyethylene (LDPE) were made by injection moulding technology and irradiated by low doses of beta radiation (0, 33, 66 and 99 kGy). The changes in the microstructure and micromechanical properties of surface layer were evaluated using FTIR, WAXS and instrumented ultra nanohardness test. The results of the measurements showed considerable increase in mechanical properties (indentation hardness, indentation elastic modulus) when the low doses of beta radiation are used.     
Keywords: low density polyethylene (LDPE), cross-linking, ultranano-hardness, surface layer
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OPTIMIZATION OF PARAMETERS OF THE PLASTIC-COATED SHEETS AT THE CORROSION TEST IN SALT SPRAY

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201744
JOZEF KMEC1, ERIKA FECHOVA2, STELLA HREHOVA2
1University of Presov, Faculty of Humanities and Natural Sciences, Presov, Slovak Republic
2Technical University of Kosice, Faculty of Manufacturing Technologies with a seat in Presov, Presov, Slovak Republic

e-mail: erika.fechova@tuke.sk
Abstract
The paper deals with optimization of parameters obtained by corrosion test in a salt spray chamber at plastic-coated sheets, which are used in various areas of economy, e.g. automotive industry. The goal of the experiment was to find out the relation between input parameters (Zn layer, Top+primer, Backout) and output parameter – corroding time by means of Response Surface Methodology (RSM). The experiment was planned with the use of full factorial design. Evaluation of experimental results was processed by means of Minitab 16 statistical software.
Keywords: plastic-coated sheets, test in salt spray chamber, corroding time, optimization of parameters, RSM - Response Surface Methodology
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PRELIMINARY INVESTIGATION OF STATIC AND DYNAMIC HYSTERESISOF DMSP-5 FLUIDIC MUSCLE

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201746
ALEXANDER HOSOVSKY,  SERGEJ HLOCH, JOZEF JURKO,  ANTON PANDA, MONIKA TROJANOVA
Technical University in Kosice, Faculty of Manufacturing Technologies with seat in Presov Presov, Slovak Republic
e-mail : alexander.hosovsky@tuke.sk
Abstract
Pneumatic artificial muscles are pneumatic actuators with elastic structure distinctive for their nonlinear characteristics and hysteresis. In the paper we concentrate on the investigation of hysteresis in one of the recent types of fluidic muscles (DMSP-5). The main objective is to examine the hysteresis with respect to its rate-independence as well as its nonlocality. We used two types of excitation signal (triangular with linearly decreasing amplitude and triangular with randomly chosen amplitude) and two types of tests (quasi-static and dynamic with two different frequencies) to observe the overall quality of hysteresis. It was found out that the hysteresis show intricate behavior in response to the random excitation and well-defined formation of major and minor loops in response to linearly decreasing signal. It can also be described as rate-independent, with the width of hysteresis major loop being maximal for quasi-static measurement (5.26 mm) but with small differences between static and dynamic tests.
Keywords: non-local hysteresis, muscle pressure, muscle displacement, pneumatic artificial muscle, loop formation
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PRODUCTION BY FDM METHOD RP TECHNOLOGY FROM PLA ECO-MATERIALS EXTRUDED HORIZONTALLY IN LENGTH

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201747
ANTON PANDA1, EMA NOVAKOVA-MARCINCINOVA1, LUDMILA NOVAKOVA-MARCINCINOVA1, TADEUSZ ZABOROWSKI2, IVAN MRKVICA3
1Technical University of Kosice,
Faculty of Manufacturing Technologies with a seat in Presov, Department of Manufacturing Technologies, Slovak Republic
2IBEN Gorzow Wlkp., Poznan, Poland
3Technical University of  Ostrava, Czech Republic

e-mail: anton.panda@tuke.sk
Abstract
The authors in their article are devoted to describe the samples production of sophisticated eco-material PLA -PolyLacticAcid extruded horizontally in length, produced by FDM method, Rapid Prototyping. Carried out experimental tests of mechanical properties are presented by the authors in this article. Also in this article eco-materials outputs tested are presented in patterns, measurement protocols recorded in software, the measured values in a static tensile test, recorded in tables and shown in work graphs. Based on obtained results the authors compared produced samples from two PLA eco-materials and determined which PLA – ecoplastic is stronger.
Keywords: rapid prototyping, PLA eco-materials, fused deposition modelling,PLA –PolyLacticAcid,3D model
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STRUCTURAL MODIFICATION IMPACT ANALYSIS OF SELECTED COMPONENTS OF SHIELDING EQUIPMENT USING RAPID PROTOTYPING TECHNOLOGY

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201751
TOMAS CORANIC, STEFAN GASPAR, JAN PASKO
Technical University of Kosice, Faculty of Manufacturing Technologies, Department of Design Technical Systems, Presov, Slovak Republic
e-mail: stefan.gaspar@tuke.sk
Abstract
The aim of the paper is to analyze the impact of selected components of shielding equipment using Rapid Prototyping technology. Mechanical properties of selected components of shielding equipment will be analyzed using computer simulation in Autodesk Inventor. Based on carried out analysis of the individual alternative will be produced prototypes of shielding components by FDM technology (Fused Deposition Modeling).
Keywords: rapid prototyping, FDM, 3D print, shielding equipment component, mechanical properties
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STUDY OF GASEOUS FLOWS IN CLOSED AREA WITH FORCED VENTILATION

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201752
MIROSLAV RIMAR, MARCEL FEDAK, ANDRII KULIKOV, PETER SMERINGAI
Technical University of Kosice, Faculty of Manufacturing Technologies with a seat in Presov, Department of Process Technique, Presov, Slovak Republic
e-mail: miroslav.rimar@tuke.sk
Abstract
According to the latest researches there are no doubts about the influence of indoor air temperature on the human body. In the current work was made simulations of heating the laboratory in the winter period by heat recovery ventilator (HRV) and combined system of HRV and floor radiators. According to our research it is better to use multi heating systems in terms of comfort people being. It is possible to heat the rooms only by HRV but it may result temperature differences on the high which may be uncomfortable for people. Simulation of the ventilation in the laboratory was made in ANSYS Fluent 14.0.
Keywords: heat recovery ventilator, ventilation, heating, recuperation, ANSYS
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END MILLS WITH PCD INSERTS SHARPENED BY DIFFERENT ELECTRICAL TECHNOLOGIES

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201759
TOMAS TRCKA, ALES POLZER, JOSEF SEDLAK
Brno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic
e-mail: 153306@vutbr.cz
Abstract
Initially a natural diamond was used for cutting, but it was successively replaced by an man-made - synthetic diamond. Its application is limited only on non-ferrous materials, but also considering this limitation it is a very important cutting material. The most suited material based on diamond for milling operations is PCD - a synthetic polycrystalline diamond produced by HPHT (high-pressure high-temperature) process, because the high fracture toughness of the tool is required [DAVIS 1995] [Tso 2002]. Four end mills with PCD inserts sharpened by different electrical technologies were produced for the experiment as stated in this article. Two milling tools were sharpened by WEDM and the remaining two by Electrical Discharge Machining – Grinding. The aim of the experiment was to compare these technologies of sharpening. This was based on the surface roughness and topography analysis of sharpened surfaces of inserts, and in particular, on the force loading of the tools measured by the piezoelectric dynamometer 9257B over selected milling time slots.
Keywords: PCD, force loading, analysis of sharpened inserts, WEDM, EDM-G
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ANALYSIS OF TURNING MOTION FOR DEVELOPING A BUTTERFLY-STYLE FLAPPING ROBOT

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201765
YUTA OZAWA1, TARO FUJIKAWA2, KOKI KIKUCHI1
1Chiba Institute of Technology, The department of Advanced Robotics, Chiba, Japan                                                               
2Tokyo Denki University, The department of Robotics and Mechatronics, Tokyo, Japan

e-mail: kikut@ieee.org
Abstract
In this study, to achieve turning flight of a butterfly-style flapping robot, we first analyzed the flight of a butterfly and then performed flight experiments using flapping robots. Flight analysis of a butterfly revealed difference between the left and right lead-lag angles during yaw turning flight. Based on analysis result, the two cases of flight experiment were performed in terms of the rotational direction of an actuator and the symmetry of swept-forward angle. The rotational direction of the actuator affected the posture for even the flapping robot with the symmetric wings. On the other hand, the flapping robot with the asymmetric swept-forward angles of 10° changed the roll and yaw angles by 18.8° and 28.8°. These results revealed that the asymmetric swept-forward angles generated roll and yaw moments compensating the effect by the rotational direction of the actuator and turned the robot.
Keywords: small flapping robot, butterfly, turning flight, asymmetric wings, swept-forward angle, rotational direction of an actuator
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DESIGN OF THE TOOL FOR PRESSING OF TARPAULIN GROMMETS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201766
JAN RIHACEK, KAMIL PODANY, MAREK HUDECEK
Brno Univesity of Technology,  Faculty of Mechanical Engineering, Institute of Manufacturing Technology, Brno, Czech Republic 
e-mail : rihacek.j@fme.vutbr.cz
Abstract
This paper deals with a design and a shape optimization of a tool that combines punching of a tarpaulin with the tarpaulin grommet pressing in one operation. The tarpaulin grommet 0.5 mm thick with a diameter of 10 mm is made of DX51D+Z275MAC steel. The designed tool and its main shape dimensions are verified by using a numerical simulation in an ANSYS Workbench software and subsequently also by a practical experiment, i.e. verification and debugging functionality in cooperation with H + D kovo company.
Keywords: tarpaulin grommet, expanding, punching, ANSYS Workbench, numeric simulation, DX51D+Z275MAC steel
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CHARACTERISATION OF ALOE VERA AS CUTTING FLUIDS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201768
PRIYAGUNG HARTONO1, 2, PRATIKTO2, AGUS SUPRAPTO3, YUDY SURYA IRAWAN2
1University of Islam Malang,Mechanical Engineering Department, Malang, Indonesia
2Brawijaya University Malang, Mechanical Engineering Department, Malang, Indonesia
3University of Merdeka Malang, Mechanical Engineering Department,  Malang, Indonesia

e-mail: priyagung@unisma.ac.id
Abstract
Cutting fluids provide a challenge to reduce environmental effects. This study discusses aloe vera cutting fluid (AVCF) as an environmentally friendly alternative to oil-based cutting fluids mixed with water 1:5 (OBCFM). A turning process with low cutting speed (20.232 m/min) requires high cooling power. The turning process was conducted(cutting speed:20.232 m/minute, feed rate: 0.24 mm/rev, and cut depth: 1 mm)on a cast-iron workpiece with 44 HRC or Rockwell Hardness ?(diameter:28 mm and length;300 mm). The high-speed steel cutting tool with average hardness 67.25 HRC was tested via machining with a cutting time of 56.550 seconds, and the flank wear was measured(AVCF: 0.311 mm; OBCFM:0.284 mm; dry machining:0.576 mm). Flank wear of the cutting tool using AVCF is almost equivalent to that of cutting tools using OBCFM; thus, AVCF is an environmentally friendly cutting fluid compared to OBCFM.
Keywords: cutting fluids, aloe vera, turning process, flankwear
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AIR COATED ABRASIVE SUSPENSION JETS UNDER SUBMERGED CONDITION

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201770
SEIJI SHIMIZU, GUOYI PENG, YASUYUKI OGUMA
Nihon University, College of Engineering, Department of Mechanical Engineering, Koriyama, Fukushima, Japan
e-mail : sshimizu@mech.ce.nihon-u.ac.jp
Abstract
In order to improve cutting capability of a submerged abrasive suspension jet (ASJ), a ventilated sheathed nozzle for producing an air coated ASJ has been developed. Cutting characteristics of air coated ASJs under submerged condition are provided by cutting tests with specimens of aluminium alloy. Unsteady behaviour of the air coated layer around the jet is also investigated by high speed observations of air coated water jets. The cutting capability of air coated ASJs and the unsteady behaviour of the air coated layer of the submerged jets are arranged properly by the cavitation number based on the pressure in the ventilated cavity and Strouhal Number.
Keywords: abrasive suspension jet, submerged cutting, air coated jet, high-speed observation, pulsation
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ABRASIVE WATER JET DRILLING OF COOLING HOLES IN AEROENGINES: PRELIMINARY EXPERIMENTAL STUDY

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201771
PETR HLAVACEK1, TOMAS ZLAMAL2, LIBOR SITEK1
1The Czech Academy of Sciences, Institute of Geonics, Ostrava, Czech Republic
2VSB - Technical University of Ostrava, Faculty of Mechanical Engineering, Ostrava, Czech Republic

e-mail : petr.hlavacek@ugn.cas.cz
Abstract
This paper addresses an experimental investigation on the feasibility of using abrasive water jet (AWJ) for the drilling of small-diameter holes in aeroengines components. These components are sprayed with ceramic thermal barrier coating (TBC). The required holes are typically 0.5 to 1 mm in diameter with a drilling angle of 30 to 90 deg. The parameters of the AWJ were varied to study their effects on both quantitative and qualitative hole drilling parameters.
Keywords: abrasive water jet, drilling, thermal barrier coating
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ABRASIVE WATERJET AS A PART OF INDIRECT PROCESS CHAIN FOR MICROMIXER MANUFACTURING

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201773
JOSKO VALENTINCIC1, ANDREJ LEBAR1,2, MARTIN VADNU1, MARKO JERMAN1, PAVEL DRESAR1 AND IZIDOR SABOTIN1
1University of Ljubljana, Faculty of Mechanical Engineering, Ljubljana, Slovenia
2University of Ljubljana, Faculty of Health Sciences, Ljubljana, Slovenia

e-mail : izidor.sabotin@fs.uni-lj.si
Abstract
Microproduction-based lab-on-a-chip technologies have recently been substantially advanced and have become widely used in various multidisciplinary research fields, including biological, (bio-) chemical, and biomedical fields. A key factor in microproduction is micro tooling. For mass production it is of paramount importance to produce tools from materials with excellent mechanical properties, thus the machining processes need to be able to produce geometrical features smaller than 1 mm in such materials. In this paper, an indirect process chain for production of micromixer and comprising of waterjet (WJ) and abrasive waterjet (AWJ) machining, die-sinking electrical discharge machining (EDM) and casting of polydimethylsiloxane (PDMS) is presented. The main source of dimension deviations is WJ machining. AWJ machining performs much better – for the given application the precision is satisfactory, but the kerf width is too large.   
Keywords: AWJ, EDM, casting PDMS, micromixer, lab on a chip
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EFFECTS OF WATER JETS ON CNTS/CONCRETE COMPOSITE

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201775
VLADIMIR FOLDYNA1, 2, JOSEF FOLDYNA1, DAGMAR KLICHOVA1
1The Czech Academy of Sciences, Institute of Geonics, Ostrava, Czech Republic
2VSB-Technical University of Ostrava, Nanotechnology Centre, Ostrava, Czech Republic

e-mail : vladimir.foldyna@ugn.cas.cz
Abstract
Results of the resistance of carbon nanotubes concrete composite (CNTs/concrete composite) to the action of pulsating and continuous water jets are presented in this paper. This work brings advanced results of fully hydrated CNTs/concrete composite (after 28 days) and it follows up the research of this composite hydrated 7 days. The experiments were focused on the determination of erosion effects of both types of water jets impinging the surface of reference (concrete) and CNTs/concrete composite samples. Erosion effects of water jets were evaluated in terms of material removal rate. Tests were performed at various operating parameters of continuous and pulsating water jets.
Keywords: CNTs/concrete composite, continuous and pulsating water jet, material removal
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POSSIBILITIES OF PERFORMANCE MEASUREMENT OF COMBUSTION ENGINES

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201778
DANIEL MADER1, MARTIN PEXA1, BOHUSLAV PETERKA1, MAREK DVORAK1, MARTIN KOTEK2
1Czech University of Life Sciences Prague, Faculty of Engineering, Department for Quality and Dependability of Machines, Prague, Czech Republic
2Czech University of Life Sciences Prague, Faculty of Engineering, Department of Vehicles and Ground Transport, Prague, Czech Republic

e-mail: maderd@tf.czu.cz
Abstract
The paper deals with performance measurement of combustion engines. Currently, in combustion engines is not used only fuel from fossil fuel (diesel, gasoline), but also the fuel of biological origin. Due to most engines are designed for fossil fuels, it is possible to expect a reduction of power parameters (lower calorific value of fuel) of biofuels. Whether the vehicle (tractor) fulfill the operational requirements of the user in that conditions, it is often necessary to control by measurement. The measurement can performed by using static (dynamometer) or dynamic methods. It is usually necessary to expect, that performance parameters of the engine with a turbocharger can be distorted by using dynamic methods. In the article is stated a comparison both of methods on road vehicle Skoda Octavia 1.8 turbo and tractor ZetorForterra 8641.
Keywords: biofuels, combustion engine, performance parameters, engines speed, torque, power, dynamometer
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DETERMINATION OF MEASUREMENT UNCERTAINTY ON CMM SIOS NNM-1

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201796
JAN SRAMEK, ROBERT JANKOVYCH
Brno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic
e-mail: jsramek@cmi.cz
Abstract
This paper focuses on determination of uncertainty and individual contributions to the measurement uncertainty on the nano-CCM NNM-1 instrument fitted with the touch-probe scanning system Gannen XP. Ruby ball diameters with various nominal diameters are used as the measured objects. Two main methods to determine the measurement uncertainty, the substitution and multi-position methods are addressed in detail. The paper also summarizes and specifies calculation methods to determine the measurement uncertainty, and provides results of representative sets of measurements, including determination of the expanded measurement uncertainty, in a new, unpublished way.
Keywords: ruby ball, measurement uncertainty, length measurement, multi-position method, substitution method, nanometrology, coordinate measuring machine
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IMPROVING BUSINESS PROCESSES USING SIMULATION TOOLS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017103
RICHARD WOROBEL, JURAJ CAPEK, LUCIA KOVACOVA, PETER BUBENIK, MARTIN KRAJCOVIC,
University of Zilina, Faculty of Mechanical Engineering, Department of Industrial Engineering, Zilina, Slovak Republic
e-mail: richard.worobel@fstroj.uniza.sk
Abstract
The article describes how to improve business processes by using modeling and simulation tools. A dynamic business environment requires continuous improvement of business processes. By using process improvement tools, the enterprise gains insight into ongoing processes, which is the basic requirement for a planned change. The simulation tools provide professionals with the opportunity to build variants of the future organization of processes that are expected to deliver higher business performance. Using modeling tools, it is possible to describe and create the current map of the monitored processes. By introducing a change in processes, the simulation tool enables the future development of the key performance indicators monitored. In the present paper, the authors present the use of a tool for modeling and simulation of processes, where they address the role of improving the business processes of the company dealing with the production of books, magazines, paper packaging and promotional materials.
Keywords: modeling, business processes, business processes, simulation, performance improvement
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BASICS OF DESIGNING MAINTENANCE PROCESSES IN INDUSTRY 4.0

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017104
MIROSLAV FUSKO, MIROSLAV RAKYTA, MARTIN KRAJCOVIC, LUBOSLAV DULINA, MARTIN GASO, PATRIK GRZNAR
University of ZIlina, Faculty of Mechanical Engineering, Department of Industrial Engineering, Zilina, Slovak Republic
e-mail: miroslav.fusko@fstroj.uniza.sk
Abstract
This paper deals with a new research of designing proactive maintenance processes for the Fourth Industrial Revolution, the so-called Industry 4.0. The mission and position of maintenance in a modern managed factory is highlighted by the fact that maintenance is one of the major processes that affect production productivity. In the near future, whatever is possible to digitize will be digitized, and anything that can be networked will be networked. Digitization is the key element for the future success of factories. Software is increasingly becoming a decisive production factor, because all of these networked machines must be controlled and all the digital data must be stored, processed, and meaningfully analyzed. Therefore, the successful companies of today (manufacturing and non-manufacturing) will need to be or become software companies, too.
Keywords: maintenance, digitization, steps for designing, smart maintenance, technical service, systems designing
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DIGITIZATION IN THE TECHNICAL SERVICE MANAGEMENT SYSTEM

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017105
MIROSLAV FUSKO1, MIROSLAV RAKYTA1, LUBOSLAV DULINA1, IVANA SULIROVA1, MILAN EDL2
1University of ZIlina, Faculty of Mechanical Engineering, Department of Industrial Engineering, Zilina, Slovak Republic
2University of West Bohemia, Faculty of Mechanical Engineering, Deparment of Industrial Engineering and Management, Pilsen, Czech Republic

e-mail: miroslav.fusko@fstroj.uniza.sk
Abstract
The aim of this paper is to focus on digitization and its disrupting effects on production, using innovative approaches. The article shows how and where to start with digitization in plants. Nowadays, the term technical service management system digitization is gaining in prominence. New concepts, information and communication technologies (ICT) change the overall view of and the approach to production and its auxiliary and service processes. In today’s plants, this area is closely monitored and optimized. Long-term trends in technical service are efficient machinery and equipment management with minimal cost (resources) and use of troubleshooting devices, sensors, ICT. Nowadays, plants can collect and analyze greater amount of relevant information than in the past. In turn, these data help them optimize their processes and ensure their sustainability.
Keywords: digitization, maintenance, technical service, management system, sustainability, new trends, information
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ASPECTS AFFECTING ACCURACY OF OPTICAL 3D DIGITIZATION

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017106
RADOMIR MENDRICKY
Technical University of Liberec, Department of Manufacturing Systems and Automation, Liberec, Czech Republic
e-mail: radomir.mendricky@tul.cz
Abstract
Use of optical 3D digitization for dimensional and shape inspection of work-pieces has increased during the last few years. However, the quality of data obtained by scanning may be affected by many factors. Digitization accuracy of optical 3D scanners is generally determined by Acceptance Tests compliant with the VDI / VDE 2634 standard. When performing the validation test, all variables and measurement conditions must basically be ideal. Unfortunately, such conditions are usually unavailable in common practice. For that reason, we conducted research finding how may the surrounding conditions and parameters of digitization process affect the dimensional and shape accuracy of optical 3D measurement. The aspects we assessed were for example calibration, exposure, number of images, scanning angle, or quality of used reference points.  The measurement was carried out on ATOS optical 3D scanner by GOM and spherical and cylindrical elements were used for the analysis. As found out, used reference points with low quality have a major impact on quality and accuracy of the result. Operators should also pay increased attention to calibration and heat-up the scanner to operating temperature before commencing the measurement.
Keywords: 3D optical digitizing, 3D scanner, Calibration, Measurement accuracy, Inspection, Acceptance test, Atos
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THE MODERN STORAGE EQUIPMENT WITH EMPHASIS ON INNOVATIONS AND RISKS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017108
VERA PELANTOVA1, EVA SIROVA2
1Technical University of Liberec, Faculty of Mechatronics, Informatics and Interdisciplinary Studies, MTI
2Technical university of Liberec, Faculty of Economics, KPE, Czech Republic

e-mail: eva.sirova@tul.cz, vera.pelantova@tul.cz
Abstract
A lot of the research space is devoted to the design and the use of major production equipment in publications. Minor equipmentis neglected. Large stocks are in decline from a managerial position. However, their new role is shown due to changes in the substantial neighbourhood.
The article deals with the important issue of the storage equipment in connection with the automation. The case study shows the composition and the status quo of the storage equipment in organisations, including elements of the automation and of the diagnostics. It deals with the questions of innovations and also with the identification of potential risks in the area. There are included fundamental analyses. In conclusion, the article presents a set of recommendations for ensuring of the quality of operation of the storage equipment.
Keywords: storage equipment, store, automation, innovation, risk, Industry 4.0, organisation
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NEW ASPECTS OF MAINTENANCE MANAGEMENT AND THE MATERIAL OF SPARE PARTS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017109
VERA PELANTOVA1, PETR CECAK2
1Technical university of Liberec, Faculty of Mechanical Engineering, KSA, Liberec, Czech Republic
2Technical university of Liberec, Faculty of Mechanical Engineering, KSA, Liberec, Czech Republic

e-mail: petr.cecak@tul.cz, vera.pelantova@tul.cz
Abstract
The ensuring of a continuity and a quality of the production leads a part of organisations to think about the status quo of maintenance of their equipment. The maintenance also depends on types of spare parts. The management often perceives only production characters. However, current knowledge points to a deeper interdependence. This article describes practical experience with maintenance issues. The relationship of materials of spare parts and the origin of nonconformities of a production is seen as a significant one and it puts these facts into context. The reducing of costs plays a role mainly in many organisations. This factor leads to the increase of nonconformities in spare parts themselves and elsewhere in organisations. This topic of the article is embedded in the context of knowledge from steps of example of implementationof the Industry 4.0 in the organisation. The result is several recommendations for organisations in the maintenance of the equipment.
Keywords: maintenance, spare parts, material,; Industry 4.0, innovation, production, organisation
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TESTING DIFFERENT EVOLUTION STRATEGY SELECTION STRATEGIES

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017110
PAVEL RASKA, ZDENEK ULRYCH
University of West Bohemia, Faculty of Mechanical Engineering Department of Industrial Engineering, Pilsen, Czech Republic
e-mal: praska@kpv.zcu.cz
Abstract
The paper deals with testing different selection strategies of Evolution Strategy on different discrete event simulation models. The models reflect real production systems in industrial companies. We specified different objective functions of models considering the simulated system. All possible solutions and their objective function values were mapped to find the global optimum in the search space. We tested different settings of selection strategies and other Evolution Strategy parameters using a simulation optimizer we developed for simulation optimization. We evaluated these settings by the success of finding the optimum by the optimization algorithms. We also used another evaluation criterion - the difference between the objective function value of the best solution found in the series (replication of optimization experiments with a concrete optimization method setting) and the optimum objective function value.
Keywords: evolution strategy, selection strategies, discrete event simulation models, simulation optimization, objective function
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OPTIMIZATION OF SELECTED PROCESSES IN A COMPANY WITH THE SUPPORT OF THE LEAN CONCEPT

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017111
KATERINA MARSIKOVA AND EVA SIROVA
Technical university of Liberec, Faculty of Economics, KPE, Liberec, Czech Republic
e-mail: eva.sirova@tul.cz
Abstract
The aim of the paper is to present the importance of management and optimization of administrative processes in
a company with the support of the Lean concept. The research part deals with the most popular approaches in business process management using lean manufacturing and the methods and tools used to improve production processes within this trend. The case study focuses on the issue of administrative activities and processes in the organization, and on improving these processes by applying the lean concept using project management. It includes an analysis of the selected administrative process, the identification of the various forms of waste in it and a description of achieved results of the improvement in the particular project. This paper presents a new methodology for the application of lean administration tools in the company conditions.
Keywords: lean, lean administration, process management, organization, optimization
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EVALUATING THE EFFICIENCY OF LEAN MANAGEMENT PROJECTS USING DATA ENVELOPMENT ANALYSIS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017112
EVA STICHHAUEROVA, NATALIE PELLONEOVA
Technical University of Liberec, Faculty of Economics, Department of Business Administration and Management, Liberec, Czech Republic
e-mail: eva.stichhauerova@tul.cz
Abstract
This paper describes approach to evaluate and compare efficiency of lean management projects, using a set of techniques known as Data Envelopment Analysis. DEA is a non-parametric linear programming method used to the efficiency evaluation of decision making units. Lean methods have been widely used as a tool for improving operational performance and also have been successfully implemented in many manufacturing and non-manufacturing organizations. This paper aims to develop a mathematical model to evaluate the efficiency of lean management projects. Paper provides the identi?cation of important inputs and outputs for projects that are then analysed using DEA. Working with planned indicators values, this model helps to identify one or more projects that result in the maximum bene?t to the organization. Using the real indicators values after implementation of a project, it can help to determine how the project was successful as compared with similar implemented projects.
Keywords: data envelopment analysis, lean management project, project efficiency, project success, technical efficiency
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DEVELOPMENT OF PRODUCT WHILE CONSIDERING MATERIAL FLOW IN A PRODUCT’S LIFE

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017114
MARIA URBAN1,2, FRANTISEK MANLIG2
1University of Applied Science Zittau/Goerlitz, Faculty of Mechanical Engineering, Zittau, Germany
2Technical University of Liberec, Faculty of Mechanical Engineering, Liberec, Czech Republic  

e-mail: m.urban@hszg.de
Abstract
The goal of this article is to demonstrate the dependencies between product development and material flow. The first part provides a compressed introduction to the topic. From the perspective of development, so called DfX (Design for X) approaches and methods are discussed as well as their possible influence on the business process, especially on the material flow. The purpose of this part is to provide a comprehensive overview of research notes in the given technical fields. The next part contains main steps of individual life cycle phases of a specific product – thee various methods of construction. It is figuratively explained how the selected type of final construction affects individual elements of material flow from the perspective of manufacturing, assembly, logistics, and sustainability. In the conclusion part, the research and the developed implementation is evaluated. The conclusion also contains an outline of possible future development.
Keywords: Design for Manufacturing (DfM), Design for Assembly (DfA), Design for Logistic (DfL), Desing for Sustainability (DfS), Design for Ecology (DfE), Design for Supply Chain (DfSC), product development
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AN ORTHOPAEDIC MATTRESS WITH STIFFNESS CONTROL OF PNEUMATIC ELEMENTS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017115
RADEK VOTRUBEC
Technical University of Liberec, Department of Manufacturing Systems and Automation, Liberec, Czech Republic
e-mail: radek.votrubec@tul.cz
Abstract
This paper deals with stiffness control of orthopaedic mattresses. There are several pneumatic elements inserted into the body of the mattress. Pressure transducers measure pressure in the elements. Pneumatic valves control input and output air flow. All components including a compressor are inserted in the bed. The initial control algorithm was designed in LabVIEW. The final solution is realized through a microprocessor. It is possible to set the desired stiffness in two zones of the mattress - in the shoulder area and in the hip area. The system has two modes. The desired values can be adjusted manually in order to achieve level position of the spine. In the second case, the stiffness can be changed dynamically and may act against bedsore.
Keywords: vibroisolation, pneumatic systems, pur foam, microprocessor, orthopaedics, sleep quality
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DISCRETE EVENT SIMULATION USAGE TO MODEL AND OPTIMIZE THE PRODUCTION LINE

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017117
MARTINA KUNCOVA, MICHAELA ZAJONCOVA
Univeristy of Economics, Prague, Faculty of Informatics and Statisics, Dept. Of Econometrics, Prague, Czech Republic
e-mail : martina.kuncova@vse.cz
Abstract
Simulation models are usually used in situations where complex or complicated systems and processes need to be analyzed. The main advantage of the simulation modelling is the fact that it is realized in virtual reality (in simulation software) without the necessity to change the real processes. In this article the process of the model creation, verification and validation is described on the example of the Cisco routers production line in company Foxconn CZ. One part of the production line is modelled in SIMUL8 software. The main aim is to verify options for the line balancing improvement. For the activities’ duration times the estimation of the probability distribution was made in R software on the basis of real data or via the experts’ estimate. After the process bottleneck findings according to the simulation models’ results the changes in the production process were suggested.  
Keywords: simulation model, production process, production line, routers, SIMUL8
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SAFETY METRICS OF PERFORMANCE FOR SMALL AND MEDIUM-SIZED ENTERPRISES – CASE STUDY

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_2017118
LUBOS KOTEK1, ALES NOSEK2, VOJTECH BARTOS3
1Brno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic
2Brno University of Technology, Quality Management Department, Brno, Czech Republic
3Brno University of Technology, Faculty of Business and Management, Brno, Czech Republic

e-mail: kotek.l@fme.vutbr.cz
Abstract
To systematically reduce workplace safety risks and improve business performance, the principle of continuous improvement is usually used. It is based on the selection of objectives and subsequent monitoring of their fulfilment using key performance indicators in the given area, in the field of safety this means safety metrics. These, therefore, serve to constantly monitor the state of the organisation’s safety management system, i.e. to obtain information about the level of strategies, processes and activities used by the organisation to manage health and safety risks. Although the safety metrics applicable in a large organisation are already well described in the literature, thereis a problem with the use of these metrics in small or medium-sized enterprises. Here, the suggested metrics often appear to be ineffective, they cannot properly monitor the state of safety.
This article aims to introduce a procedure for defining key performance indicators in the field of safety applicable in a small or medium-sized enterprise and to present this procedure in a case study.
Keywords: safety metrics, performance of processes, risk management, process safety management, safety indicator
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LOGISTICAL MEASUREMENT STRATEGY ON COORDINATE MEASURING MACHINES AS A TOOL FOR THE REPRODUCIBILITY OF RESULTS

MM (Modern Machinery) Science Journal, March_2018
DOI:10.17973/MMSJ.2018_03_201801
NAQIB DANESHJO1, MARIAN KRALIK2, ENAYAT DANISHJOO3
1University of Economics in Bratislava , Faculty of Business Economics with seat in Kosice, Kosice, Slovak Republic
2Slovak Technical University in Bratislava, Faculty of mechanical engineering, Bratislava, Slovak Republic
3Thk rhythm automotive GMBH, Duesseldorf, Germany

e-mail : daneshjo47@gmail.com
Abstract
This paper examines the impact of a selected logistical measurement strategy on coordinate measuring machines for the reproducibility of measurement results. Optimising the reproducibility of measurement results is one of the basic requirements in the process of verifying the quality of components between organisations, workplaces and processes. Selected measurement strategy and logistics selected by the operator of a coordinate measuring machine may be transposed as variability of measurement results because of these parameters. This variability, expressed as the uncertainty of measurement, is a potential source of disparity between the results of individual measurements of the same parameters on machine components. This paper examines the process and the influence of selected aspects of the chosen measurement strategy on resulting uncertainty of measurement and its behaviour in terms of the conditions of reproducibility. Experimental research is based on the use of Taguchi methods of experiment design and more precise MSA (measurement system analysis) tools.
Keywords: measuring machines (CMM), CAD design models, logistical measurement strategy, measurement system analysis (MSA), Taguchi methods of experiment design
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