Institute for Sustainable Technologies

Radom, Poland

Institute for Sustainable Technologies

Radom, Poland

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Zbrowski A.,Institute for Sustainable Technologies
Solid State Phenomena | Year: 2015

The article presents the application of computed tomography (CT) for the detection of internal material defects in roller bearing rings made of steel. The tests were conducted using a set of four rings with different defects created artificially by means of electric discharge machining. In each test ring, several defects of the same type could be observed; however, they differed in terms of their size and geometry. The defects analysed had the form of internal blind holes with axes transverse or parallel to the surface of the track of the bearing - internal blind rectangular holes, and through slits in the inner cylindrical surface. The tests were conducted using a "V|tome|x s" X-ray CT scanner (tomograph) by GE. The roentgenograms of test objects were taken and then reconstructed in 3D. Each defect was visualised in different section planes of a reconstructed ring. Selected defects were represented in a solid form, and the measurements were taken in order to determine their geometry and volume. The tests confirmed that CT can be used in studies on such internal material defects in roller bearing rings as subsurface voids. All artificially made model defects were detected. © (2015) Trans Tech Publications, Switzerland.


Wojcicki T.,Institute for Sustainable Technologies
Diagnostyka | Year: 2014

The article presents the method for the support of diagnostic processes with the use of an original computer system in which augmented reality is applied. The proposed solution constitutes a significant step towards improving actions directed at the assessment of the technical condition of complex technical devices. The research problem presented in the article was defined through the determination of the scope of diagnostic tasks which the personnel may find difficult in certain technical conditions. The research method consisted in the selection of a technology facilitating effective execution of diagnostics of complex technical devices. In the developed solution diagnostic processes are executed via the visual presentation of the following: the location of the components of the device, the diagnostic tasks, the descriptive hints, the measurement values, the location of the measurement points, and the 3D models of the components.


Wojcicki T.,Institute For Sustainable Technologies
Solid State Phenomena | Year: 2015

The article presents a developed original model designed to increase the efficiency of the processes of the design of adaptive image analysis methods used for detection of surface defects in materials. The model was created as part of activities related to the Strategic Program – Specialized knowledge bases and expert systems for the simulation of complex processes. The methods presented in this paper make it possible to accelerate design process, including testing of algorithms developed for a wide range of surface defects, such as: cracks, discoloration, loss of materials, geometric distortion, or even the presence of defect agglomerations caused by corrosion, without the need for the acquisition of the physical image of the actual objects. This in many cases can be a significant problem for engineers who design automatic optical inspection systems, because the acquisition of test objects with specified defects which are characterized by a fixed range of values of selected parameters is not always possible. This paper presents a formal model designed to generate material defects on the surface of three-dimensional virtual objects, which is equivalent to the acquisition of actual data from vision systems. The model takes into account various surface characteristics such as their texture or roughness by using mapping by the Blinn method. The results of the use of the system developed for the classification of products represented in digital images for which image analysis algorithms have been based on so-called artificial intelligence in the form of dedicated neural networks are presented. As described in this paper, artificial neural networks are an example of adaptive models, and provide the ability to solve problems for which there are no deterministic models. The models, however, require the use of learning processes (training) with the use of extensive data sets, which in this case were generated with the use of the developed solution model. © (2015) Trans Tech Publications, Switzerland.


Mizak W.,Institute for Sustainable Technologies
Solid State Phenomena | Year: 2015

The Institute for Sustainable Technologies – National Research Institute developed a device for erosive wear tests that enables the experimental reconstruction of the erosion process and the empirical modelling with the use of which the assumed operational life of a given material can be determined with reference to the influence of the erosion processes. The author presents the architecture and the functionality of a pneumatic system employed in the device simulating the erosive wear processes. He discusses the functions of individual actuators and the hardware solutions used in this system. Additionally, the research problems encountered during the design and the verification of the prototype of the device are analysed. The instrumentation enables the reconstruction of real operation conditions of structural elements and the simulation of different experimental reactions with the possibility to model their intensity. The developed pneumatic system is an integral part of the device that can be useful for both researchers and designers, because it helps to explain physical aspects of the erosion of materials. © (2015) Trans Tech Publications, Switzerland.


Mrozek M.,Institute for Sustainable Technologies
Solid State Phenomena | Year: 2015

Multi-agent systems are used mainly in IT solutions and control groups of robots. From the point of view of classical control architectures, they are a kind of distributed systems in which nodes perform advanced algorithms, usually associated with the technology of artificial intelligence, and they can be considered as agents. The article describes the multi-agents control system of objects of uniaxial movements. An example of such a system to control a repository with movable racks with electric motors is presented. Each rack acts as an agent through the implemented control of the resources of embedded microcontrollers. Such a system provides high quality control, guaranteeing long-lasting, trouble-free operation while maintaining the safety of both service and stored items. © (2015) Trans Tech Publications, Switzerland.


Rogos E.,Institute for Sustainable Technologies
Solid State Phenomena | Year: 2015

The continuous degradation and pollution of the environment and the requirements for the environmental protection are generating endeavours aimed at limiting the amount of produced waste. It applies to hazardous waste in particular, and spent industrial oils and cutting fluids are included in this category. This article presents a functional life system that provides the means to extend the functional life of industrial oils and cutting fluids and that includes a monitoring process of key functional properties and systematic recycling. Moreover, it proposes a practical application of the system in respect to hydraulic oils and emulsion cutting fluids used in the industry. The results of the study on the changes in the fluids and oils are presented in terms of functional properties of oils and fluids during operation and the effectiveness of the treatment methods carried out using mobile devices: separation in centrifugal force field, filtration, and dehydration, and disinfection. It was found that monitoring and systematic treatment, using this system provides the possibility to maintain a high level of operational properties of oils and fluids. It allows the efficient use of their functional potential and extends their functional life. © (2015) Trans Tech Publications, Switzerland.


Przybylski J.,Institute for Sustainable Technologies
Solid State Phenomena | Year: 2015

Functionality, the quality of work and safety are crucial aspects of the design and implementation process for every new mechanical device, including PVD devices. In the case of the latter, these aspects are closely related to the issue of the batch load. The article presents the analysis and implementation of a machine safety system designed for a modular PVD test stand conducted in accordance with the 2006/42/WE Directive on Machinery. The author presents methods for assessing safety levels of implemented functions and indicates the safety level for which the goals set are met. The analysis the authors conducted can be used for any mechanical device that presents safety concerns due to the presence of moving parts. © (2015) Trans Tech Publications, Switzerland.


Molenda J.,Institute for Sustainable Technologies
Solid State Phenomena | Year: 2015

The dynamic development of pro-ecological sources of energy, including solar energy systems and heat pumps, generates a need for the development of specialised antifreeze fluids with relevant utility properties, high ecological potential, and an affordable price. The article presents a method for obtaining high quality glycol recyclates in the course of the physicochemical treatment of antifreeze fluids removed from use. The study investigated samples of fluids that underwent a series of treatments applied in an experimental system carrying out filtration, sorption, and radiation disinfection. The glycol recyclates were subjected to spectral analysis, and their physicochemical properties were measured, which are decisive in determining the fluid’s practical usefulness. The study established that the physicochemical treatment results in high quality products that can be used as substitutes for new antifreeze hydro-glycol components in green energy systems. © (2015) Trans Tech Publications, Switzerland.


Molenda J.,Institute for Sustainable Technologies
Solid State Phenomena | Year: 2015

The aim of this study was to evaluate the usefulness of the developed industrial rapid non-destructive methods of quality inspection of fly ash that is produced by the combustion of coal in power plants. The work was carried out to implement the method of the measurement of the reflectance of visible light into an industrial device equipped with an Ulbricht sphere. Verification tests performed using real samples confirmed the usefulness of this method to identify the content of unburned carbon in the ash, which determines the economic use of this waste/by-product generated in power plants. The article also presents a detailed analysis of the areas of the use of fly ash in various sectors of the economy, particularly in the cement industry, construction, mining, and road construction sectors. © (2015) Trans Tech Publications, Switzerland.


Koziol S.,Institute for Sustainable Technologies
Solid State Phenomena | Year: 2015

Rescue and fire-fighting vehicles and other vehicles used by the fire department, such as tankers and aerial ladder trucks have typically a high centre of gravity. Driving such vehicles involves the danger of transverse stability loss and rolling over. This problem is augmented by inadequate driver experience due to the low mileage of emergency vehicles. The safety of a moving vehicle largely depends on its driving characteristics, which can be studied and compared, and these in turn can be the basis for the evaluation of the vehicle safety with a specific body design. The aim of the study was to develop a set of measuring devices for identifying driving properties for trucks. A dynamics study was conducted using constructed prototype solutions for selected trucks with a high centre of gravity, including emergency vehicles for fire departments. The study was performed during selected standard road tests for determining driveability properties. Three road tests were used to assess the road stability and manoeuvrability of the vehicles: driving in a circle in predetermined conditions, steering wheel jump while driving straight ahead, and braking while driving in a circle. The results of this study allow determining the characteristic values of parameters describing vehicle behaviour in each test and a comparative assessment of their safety in traffic. Moreover, the study constituted a verification of the developed system that can be used for dynamics tests and the evaluation of vehicle safety. © (2015) Trans Tech Publications, Switzerland.

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