A5044560055- Additive Manufacturing and 3D Printing Technologies
- Additive Manufacturing Materials and Processes
- Manufacturing Process and Optimization
- Welding Techniques and Residual Stresses
- High Entropy Alloys Studies
- Innovations in Concrete and Construction Materials
- Topology Optimization in Engineering
- Mechanical and Thermal Properties Analysis
- Optical Imaging and Spectroscopy Techniques
- Mechanical Engineering and Vibrations Research
- Advanced machining processes and optimization
- Advanced Machining and Optimization Techniques
- Laser and Thermal Forming Techniques
- Metal and Thin Film Mechanics
- Advanced Fiber Laser Technologies
- Cellular and Composite Structures
- Solid State Laser Technologies
- Technical Engine Diagnostics and Monitoring
- Material Selection and Properties
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Photoacoustic and Ultrasonic Imaging
- Engineering Technology and Methodologies
- Advanced Surface Polishing Techniques
- Mechanical Engineering Research and Applications
- Material Properties and Applications
VSB - Technical University of Ostrava
2018-2024
University of Hradec Králové
2016-2018
University Hospital Hradec Králové
2016
Czech Technical University in Prague
2013-2015
Czech Academy of Sciences, Institute of Physics
2015
An overview of the latest developments kilowatt-level diode pumped solid state lasers for advanced applications at HiLASE Centre is presented. subcontracted and in-house-developed laser beamlines The aim development to build kW-class delivering picosecond pulses between 1- 100-kHz repetition rates high-energy nanosecond 10 Hz. are based on Yb:YAG thin-disk amplifiers chirped pulse amplification. current status beamlines’ performance reported. advantages zero-phonon line pulsed pumping...
The present paper deals with the investigation and comparison of influence scanning strategy on residual stress in selective laser melting (SLM) process. For purpose experiment, bridge geometry samples were printed by a 3D metal printer, which exhibited tension after cutting from substrate, slightly bending toward direction. Samples produced variation process parameters change plays major role generation. It was evaluated using Bridge Curvature Method (BCM) optical microscopy. At end,...
Abstract Over the last few decades, Instrumented Indentation Test (IIT) has evolved into a versatile and convenient method for assessing mechanical properties of metals. Unlike conventional hardness tests, IIT allows incremental control indenter based on depth or force, enabling measurement not only but also tensile properties, fracture toughness, welding residual stress. Two crucial measures in are reaction force ( F ) exerted by tested material D ). Evaluation mentioned from – curves...
This paper deals with an experimental analysis of stress prediction and simulation prior to 3D printing via the selective laser melting (SLM) method subsequent separation a printed sample from base plate in two software programs, ANSYS Addictive Suite MSC Simufact Additive. Practical verification was performed on 3Dprinted topologically optimized part made AISI 316L stainless steel. presents typical workflow for working metallic technology state-of-the-art knowledge field components. The...
Components prepared by additive technologies are increasingly utilized because of shape freedom and new possibilities fibre reinforcing. Therefore, it is important to investigate the mechanical properties numerical simulations theirs. This study focused on experimental examination flexural FDM long carbon reinforced composites with polymeric matrix Onyx 3-point bending test. Two volumetric contents two layer distributions were investigated. The experiments served also as case studies for...
This paper presents the results of a study on dimensional accuracy analysis models produced by 3D printing technology—Fused Filament Fabrication (FFF). Geometric measurements were conducted using dial caliper, scanner and coordinate measuring machine. In addition, statistical test was carried out, considering division into different numbers samples (3, 5, 10, 20, 30). The made it possible to assess influence tools used number tested final measurement result, as well determine consequences...
Improving the surface roughness quality of 3D printed components, especially metallic ones, which are fabricated from selective laser melting (SLM) method, has drawn enormous attention research community. It should be noted that various studies on this topic have reported precise results can obtained with techniques indeed not cost-effective. Differing itself these studies, manuscript investigates an economical solution for fabricating and treating SLM components. Specifically, inspected...
The integration of the Internet Things (IoT) in healthcare has been a popular topic recent years. This article provides comprehensive review medical IoT for healthcare, emphasizing state art, enabling technologies to adopt virtuality and reality interaction, human-centered communication (the Metaverse, Extended Reality (XR), blockchain, Artificial Intelligence (AI), robotics). In particular, we assess number scientific articles patents within period 2015–2022. We then use two-stage process...
The scientific community has been intensively studying how to improve the level of surface roughness on 3D-printed parts, particularly metallic parts made using selective laser melting (SLM) technique. Various research papers this subject have revealed that accurate data can be generated several methods are, in fact, not cost-effective. For reason, finishing processes are an integral part overall production, especially for those components where primary concern is only appearance but also...
The combination of topology optimization (TO) and 3D printing has revolutionized the way components are designed fabricated. In view this, this manuscript presents a TO workflow considering frame scooter. particular, is employed to redesign scooter based on commercial one. topologically optimized then fabricated with stainless steel 316L utilizing selective laser melting (SLM) method. technical obstacles encountered during process according solutions recorded. Given herein notes, readers who...
In metal 3D printing with Selective Laser Melting (SLM) technology, due to large thermal gradients, the residual stress (RS) distribution is complicated predict and control. RS can distort shape of components, causing severe failures in fabrication or functionality. Thus, several research papers have attempted quantify by designing geometries that a predictable manner, including Bridge Curvature Method (BCM). Being different from existing literature, this paper provides new perspective...
Abstract 3D metal printing is an increasingly popular production of steel parts. The most widespread and accurate method SLM (Selective Laser Melting), which uses metallic powder as the input material. article dedicated to researching supplied from Renishaw. made by gas atomization 3 phases (virgin, sift waste) that are present in process examined. Powder morphology SEM electron microscopy investigated porosity measured optical method. Next, grain size fraction In conclusion, there...
This article describes the design procedure of a topologically optimized scooter frame part. It is rear heel frame, one four main parts made with stainless steel 3D printing. The first part deals area definition and determination load cases for topology calculation. second process optimization itself creation volume body based on calculation results. Finally, final control using an FEM (Finite Element Method) analysis created Computer-Aided Design (CAD) data shown. Part also review partial...
The aim of the paper is to design, manufacture, and test an off-axis composite profile circular cross-section. Composite based on continuous carbon fibers reinforcing onyx matrix, i.e., a matrix that consists nylon micro fibers, was produced by fused deposition modeling (FDM) method. A buckling six printed specimens performed tensile machine. values experiment were compared with computational simulation using Finite Element Method (FEM) analysis. mean value experimentally determined critical...
This paper presents an analysis of the torsional stiffness frame Formula TU Ostrava team vehicle Vector 04. The first part introduces SAE project and importance in structures. continues with a description testing method used to determine explanation experimental procedure. consists attaching suspension two beams. A force is applied one beams, causing load on frame. From displacements certain nodes frame, overall sectional torsion then determined. Based experiment, FEM simulation model was...
This paper focuses on the topological optimization of Formula Student bell crank.Modern trends in designing are weight reduction, and due to this, also reduction fuel consumption.Topological allows modification shape component respect strength demand boundary conditions loading.The software with computational methods is used.This accomplishes several interactions evaluates optimal one.Topologically optimized manufacturing usually done by 3D printing.In this article, authors follow...
3T3 Swiss albino mouse cells are often used in biotechnological applications. These can grow adherently on suitable surfaces. In our study, they were grown different titanium substrates, comparing commercially available sheets of grade 1 and 2, respectively, with Ti64 which was 3D printed porosity order to identify potential substitutes for common well-plates, could – case substrates be produced various shapes dimensions thus broaden the range cell growth biotechnology tissue engineering....
This paper examines various surface pretreatments and their impact on the quality of vitreous enamel coating. In this case, 316L stainless steel was chosen as base material a premix coating specially prepared for enamelling. Samples by Selective Laser Melting (SLM) were used. Both mechanical (blasting, tumbling) chemical (pickling) pre-treatments applied. The variation differently samples together with interface between examined SEM. results show that different affect final its quality.
Increasingly, the fabrication of steel components is being done via 3D metal printing. One most commonly utilized reliable and precise methods called selective laser melting (SLM), it involves use metallic powder as material that fed into laser. famous problems SLM technicians face roughness printed parts. The goal this paper to study effect tumbling on M300 maraging steel, which was produced by using a Renishaw AM500 printer. An examination procedure both cost-effective efficient for...
The present work investigates the variation of surface roughness due to build position specimens with respect inert gas flow direction and re-coater movement direction. Selective laser melting (SLM) method was used study this effect using Inconel 718 as workpiece material. A total 21 samples were placed equidistant from each other on built plate observe movement. these parameters printed analyzed in terms profile parameter such Ra Rz result showed that near inlet starting had larger compared...
This study delves into selective laser melting (SLM). By using M300 steel in virgin and recycled powder form (after 20 cycles), with the aim of reducing cost printing for practical application maraging steel, a comprehensive comparison between two types was evaluated. The powder’s morphology analyzed scanning electron microscopy (SEM) backscattered electrons (BSE). particles were seen to have spherical shape, notable number satellites attached their surfaces. particle size distribution (PSD)...
This article aims to review a redesign approach of student racing car's clutch lever component, which was topologically optimized and manufactured by Additive Manufacturing (AM). Finite Element Method (FEM) analysis conducted before after Topology Optimization (TO) process in order achieve equivalent stiffness the desired safety factor for part. The redesigned using AM-Selective Laser Melting (SLM) printed from powdered aluminum alloy AlSi10Mg. final evaluation study deals with experimental...