In recent years, close-range photogrammetric scanning systems have become increasingly popular due to their low-cost hardware, components, and user-friendly software. These systems utilize high-resolution cameras and advanced algorithms to produce accurate and precise 3D models, which are essential for analyzing, documenting, and preserving cultural heritage. While there are various methods for creating (…)
The article shows how the drive modelling depending on the required output information, focusing on the machine tool area. In this way, the simulation process can be optimally set up and the output information from the model environment can be used efficiently. From the selection of input parameters to the detail and accuracy of the output values of the model itself. Many authors are dealing with digita (…)
Global Navigation Satellite System (GNSS) positioning is nowadays used for many applications, including navigation of various man-drived or autonomous vehicles and pedestrians. As a significant part of these activities take place in cities or other environments which are not favourable for GNSS signal transmission, there is an option to improve the quality of positioning in them by combining the GNSS wi (…)
Digital transformation, modern technologies to enable autonomous production capabilities, and smart logistical systems are prerequisite strategies to gain competitive advantages in developing countries. Additive manufacturing (AM) or three-dimensional printing offering more significant advantages, can manufacture complex geometries of products with various materials. AM plays a main role in reducing the (…)
The paper focuses on describing and applying a refined method of investment payback calculation related to industrial robot applications. Industrial robots play an important role in modern manufacturing companies, therefore it is important to precisely determine the investment payback of robot applications. In the first part of the paper, we introduce payback calculation theory in general and the curren (…)
The aim of the work is to calibrate the liquid pressure sensor, for which the manufacturer provides only basic data. However, there is a lack of data on other properties of the sensor needed before its use. The properties of the sensor must therefore be verified and identified. The article presents a methodology for quick identification of basic sensor parameters. These activities are also necessary dur (…)
The article deals with the methodology of verification of non-contact thermometers. A black body calibrator intended for infrared non-contact thermometers, which is considered an etalon gauge, is used to assess selected metrological properties. Also contact thermometer was used to check black body temperature. Industrial infrared thermometers, hand infrared thermometers and infrared thermal cameras were (…)
Nowadays, the research and development activities performed in the area of internal combustion engines are focused on the LTC technologies, especially on the HCCI technology. It is so because these innovative technologies are characterized by high operational efficiency as well as by low emissions of nitrogen oxides (NOX) and particulate matter (PM). The combustion process LTC is able to utilize variou (…)
Noise and lighting are significant factors that have an impact on our health, environment, production quality, etc. The purpose of this paper is to investigate sound and light absorption properties of 3D-printed polyethylene terephthalate glycol (PETG) material specimens that were manufactured with two types of holes, namely with circular and square-shaped holes. In addition, the holes were printed with (…)
Atomization using centrifugation and high-pressure gas is considered to be a relatively new method of producing metal 3D printing powders. The metal powder made by this method is expected to obtain an adequate small-scaled size with the limitation of satellites stuck to the surface due to the reduction of the gas flow in the dispersion chamber. This work conducted experimental studies with aluminum allo (…)
This article introduces a warehouse management model of raw materials in the factory thanks to MS Access that allows updating information about raw materials in stock, searching for materials, reporting - statistics, calculating inventory, locate storage and assign smart identifiers to materials. This solution completely transforms the content of the "job ticket system" in the warehouse management proce (…)
In this study, the authors developed a smart, high power of disinfection machine using IoT technology. This disinfection machine generates super fine fog from H2O2 solution by utilizing pressure-swirl airblast atomizer. This machine sprays the H2O2 fog into the air inside the operating room in hospitals to disinfect and make the environment clean. The operation of the disinfection machine is totally rem (…)
Increasing productivity is all factories want to do. The purchase of new and modern machines requires a huge amount of cost and trained human resources. Meanwhile, traditional machines have the advantages of low investment costs, efficiency in roughing machining, and low labor costs. However, one of the disadvantages of traditional machines is that the machining surface is poor, and tool wear occurs mor (…)
The article presents preliminary research on the application of additive manufacturing in the production of monolithic cutting tools for various machining operations as a new way of producing cutting tools with innovative potential. The necessary steps to produce functional cutting tools via Selective Laser Melting have been investigated. Two sets if samples were printed via SLM machine ReniShaw AM 400 (…)
The properties of plastic filaments have an essential role in the printability and properties of printed products made by 3D printing FDM. Therefore, graphite oxides reinforced ABS plastic filament were fabricated to investigate the properties change for the purpose of improving the properties of products printed from ABS plastic. Graphite oxides reinforced ABS plastic filament with 1 %, 3 % and 5 % con (…)
The paper presents the optimization of process parameters for wood laser engraving based on Taguchi method and analysis of variance (ANOVA). Laser diot mini machines using power source 10W is used for the experimental investigation process. The main parameters in the experimental wood surface laser engraving include such as: laser power (P), engraving speed (S), number of engraving lines per 1mm (L) and (…)
Path planning is the core technology to realize mobile robot navigation. The enhanced A* algorithm with a time elastic band method (TEB) is utilized to aim at the collision problem in a complex environment. A grid-based method transfers the complex environment to a simple grid-based map. The mobile robot's position is determined based on information from the given maps. Optimizing the search point strat (…)
Path planning is innately viewed as a multi-objective optimization problem (MOOP) of the shortest path and the smallest distance to collision-free obstacles. The position of the mobile robot is definitively identified based on data derived from constructing maps with SLAM or extracting data from camera frames. Due to the complexity of the surroundings, obstacle avoidance still requires a complex sensor (…)
The use of knowledge management tools is growing. With each implementation, the effectiveness of the implementation also needs to be evaluated. This article presents a method for evaluating this efficiency, an outline of its creation and an example of its use in an industrial enterprise.
One of the basic tasks of a business strategy is to ensure, among other things, the maximum use of all of an enterprise's resources. In the 21st century, one of the most important resources with a continuously increasing influence on an enterprise's results is the enterprise's knowledge. In order to make its acquisition and use as cost-effective as possible, the knowledge strategy of an enterprise must (…)
Fatigue of cold formed parts is an important consideration especially in the automotive industry. Methods exist for predicting the fatigue of parts where the plastic deformation during forming is less than the uniform elongation. Nevertheless, many stamped parts include areas where forming strain exceeds uniform elongation. These areas are also very important in terms of high cyclic fatigue. Fatigue tes (…)
It has been experimentally confirmed that polyethylene terephthalate during its processing into products destruct without carrying out the process of solid-phase polycondensation. The conditions for both primary and secondary polyethylene terephthalate have been determined for carrying out the process of solid-phase polycondensation for its effective reaction extrusion with chain extenders. To confirm t (…)
The range of applications for drives and gears stretches over numerous technological fields. The gearbox is found in every mechanical machine and represents only one small but important sub-application. Industry as a whole has a constant demand for new individual solutions tailored to solve particular problems. But again and again, it is called upon to find new ways of transmitting movements that a part (…)
Assessment of occupational safety risks at work is a requirement of the Occupational Health and Safety Management System, which is regulated by international standards. For quantitative risk assessment, it is proposed to use qualimetric methods. It is proposed to obtain estimates of hazardous factors on a dimensionless scale using the error function (erf). Knowing the density function of the law of dist (…)
The article discusses a new effective methodology for forecasting natural disasters. The technique is a combination of two methods of observing natural phenomena. The first method involves continuous monitoring of the electromagnetic signal observed at the epicenter of a future natural disaster. The second method, based on the signal trend analysis, predicts the moment of the expected natural event. The (…)
This article comprises several sections that analyze the NC program designed for machine tools. The first section focuses on characterizing the program and highlights the differences between external and internal programming. In the subsequent section, the program's structure specifically tailored for the Fanuc control system is described. It delineates the distribution of words within individual comman (…)
The two constructions for measurement of cavitations threshold in fluid are presented. The elastic underwater jet's membranes as the model of uniflow and counter flow sensor are considered. The basic frequency of membrane’s auto vibration depending on characteristics of fluid and geo¬metric parameters of construction is calculated. The nu¬merical calculations and experimental re¬sults are compared.
The article deals with the creation of an IoT system based on the Hardwario platform. In the first part, the options for signal transmission were analyzed. The selected and tested system utilizes radio frequency signal propagation at 868 MHz. Signal quality was tested in indoor and outdoor conditions, where the reliability of the proposed solution was verified. Systems built on the proposed solution can (…)
In this article, the attention was focused on the possibilities of determining material properties (at the reference strain rate), which are obtained from the experiment using a suitable material model, Curve fitting toolbox, custom-made software (Matlab computing core), which are necessary for the results prediction of the tensile test with plasticity depending on the rate of deformation or for the (…)
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