Research Papers Faculty of Materials Science and Technology Slovak University of Technology最新文献_第2页

Applications of Computational Thermodynamics in Materials Science Courses 计算热力学在材料科学课程中的应用

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-11-01 DOI: 10.2478/rput-2022-0010

R. Čička

引用次数: 0

Comparison of Two Laboratory-Oriented Subjects in Terms of Face-to-Face and on-Line Form of Education 两种面向实验室的学科在面对面和在线教学形式下的比较

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-11-01 DOI: 10.2478/rput-2022-0011

J. Moravčíková

引用次数: 0

Online Seminars on Thermal Analysis at the Institute of Materials 材料研究所热分析在线研讨会

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-11-01 DOI: 10.2478/rput-2022-0012

M. Drienovský

引用次数: 0

Sustainability Aspects of Parts Additive Manufacturing from Metal Powder 金属粉末零件增材制造的可持续性

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-06-01 DOI: 10.2478/rput-2022-0005

R. Šuba

引用次数: 0

Analysis of form Error and Roughness of Hardened Steel Workpieces Internally Turned with Different Tools in Long Overhangs 不同刀具内车削淬硬钢长悬挑工件的形状误差和粗糙度分析

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-06-01 DOI: 10.2478/rput-2022-0003

J. Peterka, Wallyson Thomas De Silva, R. Straka, T. Vopát, Jakub Hrbál, M. Kritikos

{"title":"Analysis of form Error and Roughness of Hardened Steel Workpieces Internally Turned with Different Tools in Long Overhangs","authors":"J. Peterka, Wallyson Thomas De Silva, R. Straka, T. Vopát, Jakub Hrbál, M. Kritikos","doi":"10.2478/rput-2022-0003","DOIUrl":"https://doi.org/10.2478/rput-2022-0003","url":null,"abstract":"Abstract Internal turning process is a very important and widely used process for enlarging and finishing holes. Especially for the components that work with external members, this operation needs to assure surface and geometric quality. In that case, the correct definition of working parameters will directly contribute to the quality of component. Aim of the current research was to analyse the form error and the roughness of workpieces submitted to internal turning process using boring bars in long overhangs with three different internal tools (steel, carbide and antivibrating tool). For the experiments, heat-treated DIN EN 1.2842 (ISO 90MnCrV8) steel with 58 HRC of hardness was submitted to boring process using CBN (cubic boron nitride) inserts, and a boring bar with the most possible rigid clamping system (Easy Fix). The workpiece roughness and circularity were measured using a profilometer and a form error measuring machine. The measurements provided the data to identify the boring bar levels of stability, and the workpiece micro and macro geometric errors. The experiments allowed to conclude that, for all toolbars, the evaluated errors kept constant with increasing L/D ratio during stable clamping conditions, without any vibration. On the other hand, higher values of overhangs, limited to L/D>4.25 for steel tool, can cause serious damages in the cutting system if the antivibration tools or the carbide will be not used.","PeriodicalId":21013,"journal":{"name":"Research Papers Faculty of Materials Science and Technology Slovak University of Technology","volume":"43 1","pages":"21 - 29"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85139093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Influential Aspects to Robotic Cell Energetic Efficiency: Overview 影响机器人电池能量效率的因素:综述

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-06-01 DOI: 10.2478/rput-2022-0007

R. Bočák, R. Holubek

引用次数: 0

The 19552 Steel Forging Die Surface Layers Strenghtening 19552型钢锻模表面层强化

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-06-01 DOI: 10.2478/rput-2022-0001

J. Bílik, R. Šuba

引用次数: 0

Impact of the Internal Structure Density in the Process of Fabrication of Orthodontic Master Models by Fused Deposition Modeling 熔融沉积法制备正畸母模过程中内部结构密度的影响

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-06-01 DOI: 10.2478/rput-2022-0002

J. Milde, Dimitri Papagiannopoulos, Andrej Thurzo

{"title":"Impact of the Internal Structure Density in the Process of Fabrication of Orthodontic Master Models by Fused Deposition Modeling","authors":"J. Milde, Dimitri Papagiannopoulos, Andrej Thurzo","doi":"10.2478/rput-2022-0002","DOIUrl":"https://doi.org/10.2478/rput-2022-0002","url":null,"abstract":"Abstract The article focuses on the influence of infill (internal structure of components) in the dimensional accuracy of dental master models during the processes of their fabrication by Fused Deposition Modeling (FDM) technology, and their vacuuming process for production of clear orthodontic aligners. The components, in this case, were the upper jaws (maxillary teeth) of two individual patients (Tzina, Dimitris), which were obtained by intraoral 3D scanning. Patient Tzina at the time of intra-oral scanning was 27 years old and Dimitris was 23 years old. The method of 3D printing was the FDM, and the material used in this research was thermoplastic high impact polystyrene (HIPS). Three different percentages of infill density were set, 60%, 80%, and 100%. For each setting, there were five specimens (thirty 3D printed dental models in total, 15 for Tzina and 15 for Dimitris). After the 3D printing, the models were digitized and measured by GOM ATOS II Triple Scan MV 170 optical 3D scanner and compared with the values of the initial digital models. Then the dental master models underwent the process of Essix-aligners formation (single press) and were rescanned and measured again. The outcome of this research was to examine if the dental master models remain dimensionally accurate after these processes, and which infill provides the optimal and medically approved accuracy.","PeriodicalId":21013,"journal":{"name":"Research Papers Faculty of Materials Science and Technology Slovak University of Technology","volume":"15 1","pages":"10 - 20"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82428236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Role of a Behavioural Model for the Virtual Commissioning of Robotic Manufacturing Systems 行为模型在机器人制造系统虚拟调试中的作用

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-06-01 DOI: 10.2478/rput-2022-0006

R. Skýpala, R. Ružarovský

{"title":"The Role of a Behavioural Model for the Virtual Commissioning of Robotic Manufacturing Systems","authors":"R. Skýpala, R. Ružarovský","doi":"10.2478/rput-2022-0006","DOIUrl":"https://doi.org/10.2478/rput-2022-0006","url":null,"abstract":"Abstract This paper focuses on virtual commissioning of a robotic manufacturing system, its theoretical background, and an analysis of its importance in the design of automated and robotic systems. Virtual commissioning allows the PLC control program to be tested and debugged on a created digital model of the machine, called a digital twin of the machine. Just this solution can simulate and optimize the automated system design itself without the need to have real hardware (PLC, automation elements, or the whole machine/equipment). Virtual commissioning offers an effective alternative to reduce the risks and effort of real commissioning of the machine. This makes it possible to reduce the time to market and increase flexibility, efficiency, and quality. Virtual commissioning in a single-control system is a simple solution; we can either use the Software-in-the-Loop method with emulated PLC control, simulated behavioural model, and co-simulation model or Hardware-in-the-Loop method with real controller. The problem appears when we have various types of controller, including an industrial robot controller. The paper deals with the theoretical background and partial outlines of solutions in the use of different types of the control system, if interconnections or emulators for different control systems are available. The recommended solution is to use a separate solution for the 3D simulation of the robotic system and an independent solution for the behavioural model, which will be tested in the future.","PeriodicalId":21013,"journal":{"name":"Research Papers Faculty of Materials Science and Technology Slovak University of Technology","volume":"12 3","pages":"45 - 52"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72614764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of Iron-Based Powder Additive on a Shape Accuracy of Injection Moulded Parts 铁基粉末添加剂对注塑件形状精度的影响

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2022-06-01 DOI: 10.2478/rput-2022-0004

Patrik Dobrovszký, J. Bílik, J. Milde, M. Kritikos, L. Ďuriška

引用次数: 0