A5065857613- Erosion and Abrasive Machining
- Advanced machining processes and optimization
- Advanced Surface Polishing Techniques
- Metal Alloys Wear and Properties
- Engineering Technology and Methodologies
- Coal Combustion and Slurry Processing
- Metal and Thin Film Mechanics
- High-Temperature Coating Behaviors
- Laser Material Processing Techniques
- Polymer Nanocomposites and Properties
- Mechanical and Thermal Properties Analysis
- Advanced Measurement and Metrology Techniques
- Advanced Machining and Optimization Techniques
- Metallurgy and Material Forming
- Manufacturing Process and Optimization
- Surface Treatment and Coatings
- Surface Treatment and Residual Stress
- Concrete and Cement Materials Research
- Tunneling and Rock Mechanics
- Innovations in Concrete and Construction Materials
- Surface Roughness and Optical Measurements
- Diamond and Carbon-based Materials Research
- Thermography and Photoacoustic Techniques
- Tribology and Wear Analysis
- Material Properties and Applications
Slovak University of Agriculture in Nitra
2017-2025
Institute of Technology and Business
2018-2025
Institute of Electrical Engineering of the Slovak Academy of Sciences
2022-2025
University of Žilina
2019-2023
University of West Bohemia
2008-2023
Vuje (Czechia)
2022
Institute of Technology and Business
2022
VSB - Technical University of Ostrava
2010-2019
Technical University of Cluj-Napoca
2019
Technology Centre Prague
2016-2018
The aim of the work is find out influence feed rate on quality for machined surface, especially surface roughness. experiment was carried by cutting tool HURCO VMXt30 with respect to following parameter: speed 250; 350; 450; 550 and 850 m . min -1 , 0,1; 0,5 1,0 mm/tooth. For testing used two most common materials in steel grade 1.1191 (12 050) 1.2343 (19 552), we chose ordinary parameters roughness; Ra - arithmetical mean roughness deviation Rz largest inequalities height profile transverse...
In the paper, Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS) and Photoelectron (XPS) results of surface layer formed on pure titanium after plasma electrolytic oxidation (micro arc oxidation) at voltage 450 V are shown. As an electrolyte, mixture copper nitrate Cu(NO₃)₂ (10-600 g/L) in concentrated phosphoric acid H₃PO₄ (98 g/mol) was used. The thickness obtained porous equals about 10 μm, it consists mainly phosphates oxygen embedded ions as a...
The effectiveness of a machining process can be determined by analysing the quality generated surface and rate tool wear. Stellite is highly challenging to machine, which why it primarily processed through grinding methods. This study concentrates on impact cutting parameters wear (VBb, KBb) created roughness (Rt, Ra, Rz) during orthogonal 6, overlaid steel surface, C45, prepared means HP/HVOF (JP-5000). results indicate that dominant influence change in total profile height value (Rt)...
The results of the investigations into technological formation new wear-resistant polymer composites based on polytetrafluoroethylene (PTFE) filled with disperse synthetic and natural compounds are presented. efficiency using PTFE reinforced carbon fibers depends many factors, which influence significant improvement physicomechanical characteristics. this research allow stating that interfacial surface phenomena polymer–solid interface composition play a decisive role in properties. Fillers...
This paper from the field of environmental chemistry offers an innovative use sorbents in treatment waste industrial water. Various activities, especially technological fluids machining, surface materials, ore extraction, pesticide agriculture, etc., create wastewater containing dangerous metals that cause serious health problems. presents results studies natural zeolite clinoptilolite as a sorbent copper cations. These provide measurement sorption kinetics well observed parameters cations...
The presented work deals with the creation of a new radial basis function artificial neural network-based model dynamic thermo-mechanical response and damping behavior thermoplastic elastomers in whole temperature interval their entire lifetime wide frequency range mechanical loading. created is based on experimental results analysis widely used polyurethane, which one typical representatives elastomers. Verification testing well-trained network for dependence storage modulus, loss as well...
In this study, a new generalized regression neural network model for predicting the curing characteristics of rubber blends with different contents carbon black filler cured at various temperatures is proposed first time The in blend and cure temperature were used as input parameters, while minimum maximum elastic torque, scorch time, optimal obtained from analysis 11 rheological curves registered 10 temperatures, considered output parameters model. A special pre-processing procedure...
The paper deals with the innovative ways of nonstandard, simplifying applications valid method for evaluating uncertainties in measurement results and definition conditions their usability. evaluation a substitute criterion accuracy by means relative difference between measurand its reference value is proposed. This nonstandard uncertainty comparable overall standard result, thus it enables other simplifications calculations result uncertainties. use simplified illustrated two experiments...
The paper deals with the measurement and identification of surfaces after machining in a non-contact manner. It presents new modified method its implementation, results intensity distribution defocusing plane, their analysis interpretation. scanned at plane gives information necessary to assess second derivatives, thus, surface functions which can be used determine groove curvatures real morphology. proposed has proved very sensitive evaluating differences between finishing methods by...
A method for the design of a technology abrasive waterjet cutting materials is based on determination constant cuttability using an K awj according to four different versions. Version A, where three deformation parameters are measured test cut/sample, namely selected depth h x [mm], local roughness Ra [μm] at and deviation cut trace from normal plane Y retx . B, merely two measured, reference et [mm] or, version C, one parameter mearured, either ultrasonic wave speed v LUZ [m · s –1 ] or...
This work evaluates the possibility of identifying mechanical parameters, especially upper and lower yield points, by analytical processing specific elements topography surfaces generated with abrasive waterjet technology. We developed a new system equations, which are connected each other in such way that result calculation is comprehensive mathematical–physical model, describes numerically as well graphically deformation process material cutting using an waterjet. The results our model...
This paper presents one of the soft computing methods, specifically artificial neural network technique, that has been used to model temperature dependence dynamic mechanical properties and visco-elastic behavior widely exploited thermoplastic polyurethane over wide range temperatures. It is very complex commonly a highly non-linear problem with no easy analytical methods predict them directly accurately in practice. Variations storage modulus, loss damping factor were obtained from analysis...
Current demands on quality are the engine of searching for new progressive materials which should ensure enough durability in real conditions. Due to their mechanical properties, however, they cannot be applied conventional machining methods. In respect productivity, one methods is finding such technologies allow achieving an acceptable lifetime cutting tools with a machined surface. One mentioned trochoidal milling. Based our previous research, where effect changing conditions (cutting...