Manufacturing Technology Journal, 2021 (vol. 21), issue 4
Ant Colony Algorithms For The Vehicle Routing Problem With Time Window, Period And Multiple Depots
Anita Agárdi, László Kovács, Tamás Bányai
Manufacturing Technology 2021, 21(4):422-433 | DOI: 10.21062/mft.2021.054 
Vehicle Routing Problem is a common problem in logistics, which can simulate in-plant and out-plant material handling. In the article, we demonstrate a Vehicle Routing Problem, which contains period, time window and multiple depots. In this case, customers must be served from several depots. The position of the nodes (depots and customers), the demand and time window of the customers are known in advance. The number and capacity constraint of vehicles are predefined. The vehicles leave from one depot, visit some customers and then return to the depot. The above-described vehicle routing is solved with construction algorithms and Ant Colony algorithms....
Exploring and Developing an Industrial Automation Acceptance Model in the Manufacturing Sector Towards Adoption of Industry 4.0
Muhammad Ramzul Abu Bakar, Noor Afiza Mat Razali, Muslihah Wook, Mohd Nazri Ismail, Tengku Mohd Tengku Sem-bok
Manufacturing Technology 2021, 21(4):434-446 | DOI: 10.21062/mft.2021.055
Technological progress in the 21st century has catalysed the industrial revolution (Industry 4.0) following the development of multiple new industrial automation technologies in the manufacturing sector. Regardless, past research indicated the unsuccessful attempts in adopting Industry 4.0 technologies among manufacturing organisations. Undoubtedly, the operationalisation of Industry 4.0 in manufacturing proved challenging as organisations were required to evaluate various aspects for effective implementation. Thus, a sound understanding of constructs concerning employees’ acceptance and readiness levels towards novel automation technologies...
The design of a device for testing the tribological properties of knee endoprostheses
Lucie Dobrovolna, Matus Varhanik, Josef Sedlak, Ales Polzer, Zbynek Studeny
Manufacturing Technology 2021, 21(4):447-455 | DOI: 10.21062/mft.2021.064
The presented paper deals with the design of a knee simulator that uses pin-on-ball configuration, ie cartilage and CoCrMo head. The translational motion consists of the cartilage and the rotating head when the load of the articulating pair is derived. The simulator meets the predetermined kinematic conditions according to the ISO 14243-3 standard, including dynamic loading. The simulator is able to record the coefficient of friction during the test, which helps to understand the biotribological processes in the knee. The structural part of the simulator is preceded by a research part, in which the existing simulators and tribometers, which helped...
Comparison on Milling Force Model Prediction of New Cold Saw Blade Milling Cutter Based on Deep Neural Network and Regression Analysis
Shuailiang Guo, Han Zheng, Xiangzeng Liu, Lizhi Gu
Manufacturing Technology 2021, 21(4):456-463 | DOI: 10.21062/mft.2021.053
A four factors and three levels orthogonal milling force (MF) test is designed, which qualitatively obtains the influence of four factors, namely workpiece material, workpiece diameter, milling speed and feed per tooth, on MF of the new cold saw blade milling cutter (NCSBMC), then further verifies the reliability of test data with simulation analysis of MF. The multiple linear regression analysis and deep neural network (DNN) are used to accurately fit and predict the magnitude of MF in three directions of NCSBMC, taking into account the influence of workpiece material factors on MF. Compared with the results of empirical formula, DNN has higher prediction...
Comprehensive analysis of the coated component from a FORD engine
Iryna Hren, Štefan Michna, Jan Novotný, Lenka Michnová
Manufacturing Technology 2021, 21(4):464-470 | DOI: 10.21062/mft.2021.058
The article is devoted to a comprehensive analysis of the coating of a component from the Ford Fo-cus 1.0 l EcoBoost engine. It is one of a pair of materially identical aluminum gears connected by a drive pulley and a drive. Aluminum gear components are surface treated with a mixture of metal powders using PVD technology, where the goal of the coating is to increase the hardness, abrasion resistance and heat of the base material. The chemical composition of the basic material of the gea-red aluminum drive wheel of the FORD engine proves that it is a component made by thermofor-ming and corresponds to the alloy EN AW 6061 (AlMg1SiCu) according to the...
Model solving of aluminium alloy solidification
Tereza Jarosova, Blanka Skocilasova, Frantisek Klimenda, Jan Sterba, Vit Cernohlavek
Manufacturing Technology 2021, 21(4):471-478 | DOI: 10.21062/mft.2021.052
The paper deals with the process of solidification of a cast aluminium piston into a metal mould (mould). The introductory part presents the methodology of solution where the physical properties of both the aluminium alloy and the steel mould are presented. Furthermore, the solution itself is described, which is performed on one quarter the size of a piston model by using FEM in the ANSYS FLUENT program. Piston solidification temperatures were recorded every five minutes due to the solution complexity. Next part of the paper pre-sents the evaluation where temperature sections in two mutually perpendicular planes and a quarter a size 3D model of piston...
Determination of Carbon Steel Dynamic Properties
Miroslav Jopek
Manufacturing Technology 2021, 21(4):479-482 | DOI: 10.21062/mft.2021.061
Taylor anvil test is one of the dynamic test method in which we can determine the dependences of strain, strain rate, temperature on flow stress. With this method, we can determine in each cross sec-tion or along axial section of the test specimen conditions under different states of stress, strain, strain rates and subsequent changes in the microstructure of the material. This paper describes the experimental results of the Taylor anvil test (TAT) for TRISTAL carbon steel. The experiment was performed on a TAT test facility in the Laboratory of High Strain Rates at the Faculty of Mechanical Engineering in Brno. For simulation of the mechanical behavior...
Design, Simulation and Control of a Marine Ship Model's Diesel Engine using Python and Matlab/Simulink
Fouad Kharroubi, Mohammed Fertat, Sanae El Hassani, Hassan Ouahmane
Manufacturing Technology 2021, 21(4):483-491 | DOI: 10.21062/mft.2021.059
Marine ships engines are kind of huge diesel engines. In fact, the manner of controlling the speed of a ship can impact badly on the financial matters of the machinery operation. Thus, controlling the speed of the marine engines can avoid ships to face dangerous accidents. In purpose to prevent such kind of damages, marine systems simulator have been widely used as numerical tools. In fact, the simulation of speed control systems makes it possible to render the process of controlling the speed of an engine economical and eliminates many risks. In this article, we first present a mathematical formulation to illustrate the rotational velocity process...
Managing and Improving the Drilling Process of Woodwork Furniture with the Use of SPC Tools
Krzsyztof Knop
Manufacturing Technology 2021, 21(4):492-501 | DOI: 10.21062/mft.2021.056
The article deals with the use of SPC tools to manage and improve the machining process - drilling furniture elements. The content of the article is to use such SPC tools as basic statistical parameters, box plot, histogram, classic and special control charts, and process capability indicators to assess the drill-ing process and to indicate areas to improve. The article indicates the power of SPC tools in woodwork furniture process control and power of using the Statistica program from TIBCO Software Inc. in this area. SPC tools bring a lot of important and useful information about the analyzed drilling process, its weaknesses, which contributes to...
Use of Thermomechanical Analysis in the Design of a Composite System with a Low Coefficient of Longitudinal Thermal Expansion for End Gauges
Dora Kroisová, Štěpánka Dvořáčková, Petr Kůsa
Manufacturing Technology 2021, 21(4):502-511 | DOI: 10.21062/mft.2021.063
The work presents the possibilities of using the thermomechanical analysis to design composite systems with carbon fibers, which should have a low coefficient of longitudinal thermal expansion will be potentially valuable in the form of calibrated length gauges. ChS Epoxy 520 epoxy resin (hardener T0492) was used as a matrix for composite production. Carbon fibers were tested in the form of short recycled fibers and continuous fibers in roving and fabric. The values of the coefficient of longitudinal thermal expansion of all prepared systems were determined below the glass transition temperature of the polymer matrix in the temperature range of 5º...
Accuracy and topography analysis of hard machined surfaces
János Kundrák, István Sztankovics, Viktor Molnár
Manufacturing Technology 2021, 21(4):512-519 | DOI: 10.21062/mft.2021.057
Research on efficient machining of hardened surfaces is invariably of interest because the number of wear resistant surfaces on the machined parts is increasing. These surfaces can be machined by both single-point (cutting) and abrasive (grinding) tools. However, in designating the finishing of the parts, the working characteristics of the products that the parts are intended for limit the finishing options. In this paper the results of a comparative experiment are introduced. In the experiments the allowances were removed from the hardened surfaces of the parts by turning, grinding or a combina-tion of them. The comparative analyses were carried out...
Influence of Production Technology on Selected Polymer Properties
Josef Ponikelsky, Igor Zuravsky, Vit Cernohlavek, Jaromir Cais, Jan Sterba
Manufacturing Technology 2021, 21(4):520-530 | DOI: 10.21062/mft.2021.051
In the article, the study of polymer properties is dealt with as a result of production technology on pat-terns, which were made by injecting, machining of the extruded profile and 3D printing. All samples were made from iglidur® J260 material, and they were subsequently tested in order to find out properties of roughness, breaking strength, hardness according to Shore, friction coefficient and swelling. Further-more, the samples were exposed to light microscopy, where material structure was studied, especially from the view of structure defects, distribution and shape of solid lubricants. Based on the performed experiment, it can be stated that...
Analysis of the Wear on Machined Groove Profiles Using Reverse Engineering Technology
Josef Sedlak, Denisa Hrusecka, Felicita Chromjakova, Jozef Majerik, Igor Barenyi
Manufacturing Technology 2021, 21(4):529-538 | DOI: 10.21062/mft.2021.062
One of the key components in making Industry 4.0 a reality includes machines that are able to produce required products and components faster, more precisely and more flexibly than ever before based on so-called reverse engineering technology. Reverse engineering is a technology that enables rapid acquisition of data for CAD, CAM, CAE, thereby greatly shortening the development, design and fabrication of parts. In general, analogue data is converted to digital data, which is further processed. The paper deals with the analysis of prototype models of disc milling cutters with different blade profiles. The inspection of the shape of the disc-type prototypes...
Possibilities of Porosity Repairs after Aluminium Alloys Welding
Marian Sigmund
Manufacturing Technology 2021, 21(4):539-543 | DOI: 10.21062/mft.2021.060
This article describes problems of porosity which are caused after welding of aluminium alloys. The main part of this article is dedicated of methods of correction of porosities. The best correction is by welding or by cementation. Described parts are used for welded aluminous vehicle parts in a cooperative company. Thanks to porosity are effected not only ductility and strength of welded structures but also weld quality thereby fall also resulting in surface treatment. Cooperative company is ranked among the world's leaders in development and production automatic, electro-pneumatic and electrically operated door systems for rail vehicles and traffic...
Power Injection Method-based evaluation of the effect of binding technique on the Coupling Loss Factors and Damping Loss Factors in Statistical Energy Anal-ysis simulations
Marcell Ferenc Treszkai, Alexander Peiffer, Daniel Feszty
Manufacturing Technology 2021, 21(4):544-558 | DOI: 10.21062/mft.2021.065
Measurement results on the Damping Loss Factor (DLF) and Coupling Loss Factor (CLF) between two steel plates is presented for 19 different junction types. The junctions involve joining technologies as line welding, point welding, bolting, riveting, gluing or their combinations, with parameters, such as spac-ing between the junction points or the angle between the plates varying. From the measurement results the DLF and CLF values were calculated by the Power Injection Method for the purposes of being ap-plied in Statistical Energy Analysis simulations. Four excitations were applied at each subsystem by impact hammer, while the response was recorded...