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The article presents a concept of using a controlled vibration eliminator to reduce vibrations generated during the turning process. The eliminator is embedded into the active holder supporting workpiece. A model of mechatronic system consists of a hydraulic actuator, a workpiece, and the machining process. A model of the system is used in the simulation of turning long, slender object. In the paper,...
We present the results of the stabilization of the γ-U phase with a cubic structure in U-T alloys by means of combined ultrafast cooling (with a cooling rate 106 K/s) and doping with alloying elements in the VI and VIII group (T = Mo, Pt, Nb, Ru, Ti). The X-ray diffraction data have confirmed the cubic structure presented in all U-T alloys with the alloying element content T≥15 at.% (atomic percentage...
The quality of the surface of wooden elements that have been turned and burnished has got a crucial meaning in the whole production process flow, since the obtained effects affect the quality of the wooden surface after finishing (coating, painting). In the paper, selected results of the investigation of the effect of the burnishing process on the surface quality of the elements after turning are...
The work presents the construction and the description of the operation of a test rig for the preliminary treatment of water and wastewater and testing the filtration and separation properties of non-woven depth filters. The stand was equipped with a control system for the initial filtration of water and wastewater as well as to investigate the filtration and separation properties of non-woven depth...
The paper presents an analysis of the impact of the volumetric energy density delivered during the Selective Laser Melting (SLM) of a mixture of H13 tool steel powder and microcrystalline TiB2 , on the properties of the obtained metallic matrix composite. The results of measurements of density and hardness as well as microscopic analysis of six variants of the obtained composite, differing in the...
The article presents the structure of a system designed to test heat pumps with heating power of up to 12 kW and recuperators with air streams of up to 700 m3 /h. The system’s design is based on appropriate thermal calculations and provides for testing a variety of heating equipment including heat pumps and recuperators in line with applicable standards, mainly for single-family dwellings. Parameters...
Understanding and controlling the capture and conversion of energy and the flow of electrical charges within the bulk and/or across surfaces of materials and interfaces is a focus of significant scientific and technological pursuit. Our paper focuses on nanomaterials and hybrid systems targeting the management of IR, UV, and RF radiation by absorption or reflection mechanisms. It is assisted by engineering...
The article presents the results of grease analyses regarding the assessment of rheological and greasing properties obtained in model tests. The measurement conditions were similar to those in exploitation and related to thermal and mechanical demands. The obtained results confirmed favourable greasing properties and resistance to deformation in the range of temperatures occurring during operation...
The novel technique that will be introduced for modifying surfaces is plasma treatment, which creates a great potential in the development of a variety of functional properties of polymeric membranes. Application of this technique in the processes of membrane modification allows functionalization by the manufacturing metal oxides such as copper oxide, silver oxide, or titanium dioxide on the surface...
Experimental studies of pool boiling heat transfer on open microchannels of variable and constant depth were conducted. Microchannels of variable depth from 0.05 to 2.8 mm and a width from 0.2 and 0.5 mm were uniformly spaced on base surfaces with a pitch of 0.4 and 1.0 mm. Reference surfaces with microchannels with a constant depth were 0.2 or 0.4 mm wide and 0.2 or 0.5 mm deep. The experiment was...
X-Ray imaging is a tool used for non-destructive inspection of the internal structure of products and measurements of geometric dimensions of products of any shape. The non-destructive nature of measurement techniques using X-Rays has enormous potential for wide application in many industries. At the Institute for Sustainable Technologies - National Research Institute in Radom, a universal research...
Biofouling is a phenomenon that adversely affects the efficiency of filtration hindering wide the application of filtration materials. One of the methods for biofouling prevention is coating of antibacterial nanoparticles on a surface of filters and membranes using ultrasound. In the paper, the possibility of using an ultrasonic method was evaluated to implement nanoparticles of titanium dioxide (TiO2...
Air pollution in cities is an increasing problem. The increased concentration of toxic harmful substances, including PM10 and PM2.5, is noticeable in the autumn and spring period. This is when the heating period begins. However, the industrial sector is not always responsible for air pollution. Transport also has its share. The share of transport depends on the terrain and buildings. The lack of proper...
Producers of hydraulic elements introduce new structural solutions and new materials. The aim of these activities is to increase the quality, reduce the costs, and shorten the assembly time of hydraulic elements. Consistently, with the requirements provided by the standards and technical specifications, the manufactured elements need to undergo tests of the resistance to variable temperatures and...
The paper presents an analysis of the capability of developing a system for on-line inspection of tableware glass products at the hot end of a production line. In the first part of the article, based on literature review and experimental studies, monitoring and inspection techniques used in the glass industry are presented. On the basis of conducted research, the author proposes an inspection method...
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