Mining of raw materials and their modification has a negative impact on the environment. During the mining and processing of mineral raw materials (coal, oil, ore), solid, liquid and gaseous wastes are created. The production of waste is linked to the mining site, respectively production. Many of the negative phenomena can be minimized or even eliminated by using appropriate technologies and work proced (…)
These prostheses are generally produced using two materials, glass or acrylic, and the manufacturing process is currently based only on manual procedures. However, these materials have many disadvantages, such as high hardness and fragility of glass or gradual loss of glossing. All the main disadvantages have been eliminated in the newly developed ocular prosthesis made from silicone. The publication co (…)
The ecological and economical treatment of derivatives from non-renewable sources is a current trend in the development of polymer systems, which supports global activities leading towards a sustainable environment. This article, therefore, deals with the effective management of powdered waste material (PA 12), which is no longer usable for additive technologies. Throughout recycling process, the materi (…)
The environmental impacts of products are evaluated based on an assessment of the influence of material and energy flows that the evaluated product system exchanges with the environment. The University of Southern Denmark is also dealing with this, and from the point of view of sustainable development, drinking watercoolers are being investigated using the Life Cycle Assessment method. This research con (…)
Thermo-elastic deformation of the machine tool due to thermal expansion of machine components presents one of the biggest challenges in maintaining accuracy and product quality. The operation of the machine inevitably leads to waste heat due to friction losses of bearings and guides and electrical losses of motors and control cabinets. These internal heat sources lead to inhomogeneous and changing tempe (…)
Knowledge management arose as a result of the need to incorporate the dynamics of an enterprise environment into an enterprise model. It requires a holistic approach integrating technological and human aspects by building and developing key competencies. Knowledge management makes possible correct strategic decisions, correct investments into product, minimizing risks, process innovations and effective (…)
This research article presents a comprehensive study on ceramic materials using Fused filament fabrication of ceramic (FFFC) for the production of test samples. The study investigates the effects of different production strategies on three types of ceramic materials: experimental ceramic composite fiber (e.c.c.f.)(composite material produced by STU FCHPT), Zirconium Silicate, and White Zirconia. The pri (…)
The objective of this study is to explore the relationship between technology changes in global value chains (GVCs) and economic growth of emerging market economies (EMEs). The key findings are that EMEs have a higher economic growth rate than all countries analyzed, with the manufacturing sector being the major contributor to economic growth. Simple GVCs make a larger positive contribution than complex (…)
The article deals with the validation of the pedestrian simulation model as the initial study for future virtual testing of the tram front-end. The vision of virtual modeling approval is the main motivation of the study. The biofidelity of existing models was the subject of volunteer tests. The data are utilized for assessment of both adapted real anthropomorphic test device and presented simulation mod (…)
This study was conducted to support the process of Vietnamese garment companies in building smart factories with production activities that can be controlled automatically. It is a model for managing the system of machines in the factory using MS Access, which allows for updating machines information, searching for machines, reporting, and statistics. It allows for managing the information changes in th (…)
A new ultra-high strength steel with a fully austenitic microstructure and twinning-induced plasticity (TWIP) effect has been developed. TWIP effect gives this steel a good combination of high strength of over 1000 MPa and ductility of over 35%. This new steel has a high chromium content, which increases its corrosion resistance. By combining cold rolling and annealing, the steel has achieved a very fin (…)
The main goal of this paper is to present the results of experimental verification of process parameters affecting mechanical properties of M300 material in the Selective Laser Melting (SLM) process. To obtain the values of mechanical properties, the samples were subjected to tensile testing, where the force, and elongation values were obtained. Therefore, from these values, the values of yield strength (…)
The geometry of the cutting tool is a crucial factor in its life and performance during the cutting process. In particular, the micro-geometry of the tool, which defines the shape of the cutting edge, has a significant effect on plastic deformation, heat generation, and cutting tool life. This article compares three technologies for removing material from cutting tools: wet blasting, dry blasting, and b (…)
The focus of this paper is to compare the results of topological optimization (TO) of the rocker arm for following 3D printing out of AISI 316L stainless steel by the Selective Laser Melting (SLM) method. We used the Altair Inspire software to optimize the shape of the rocker arm. Two variants of optimization were created, first, a variant of optimization without the Shape Control function was carried o (…)
Although energy consumption is highly related to economic growth and development finance, a consensus on the direction of causality among them has not been reached. To this end, this study aims to investigate the causal effect of economic growth and development finance on energy consumption with a focus on middle-income countries over the period of 1994-2014. Our empirical highlights unidirectional caus (…)
This paper reviews the current trend in the field of additive manufacturing based on the bibliometrics study. In particular, we assessed the interest of the research community revolving the hybrid material. Scopus database was referred to for the English literature on the hybrid materials in additive manufacturing, published in the time period from 2012 to 2022. As a result, 973 relevant articles were f (…)
Improving Machine-to-Machine (M2M) communication is essential for the development of Smart Factory as data can be exchanged and processed more efficiently. Herein this study, we employ the Deep Learning (DL) concepts aimed at improving end-to-end performance (E2E) M2M communication systems. Training the physical layers requires the explicit channel information to be fully known, which can be solved with (…)
Additive Manufacturing (AM) has been proven to be a significant development for production as well as become an attractive alternative manufacturing process compared with Subtractive Manufacturing (SM). This can be explained by the massive advantages of AM including mass customisation, less material wastage and ability to create prototypes. However, in order to make use of the AM process, firms, develop (…)
An integration between latent heat storage unit (LHSU) and an air cooler was studied to reduce the space cooling energy consumption in telecommunications base stations (TBSS). A mathematical model was developed to address the heat transfer processes within energy storage modules and air cooler. Furthermore, a solid works simulation was used to simulate the real system virtually. A simulated annealing al (…)
Advanced drilling technology makes it possible to penetrate oil and gas sites with deep bedding of oil reservoir, a complex multi-layer structure and a high reservoir temperature at the well bottom, reaching 150°C. The difficult geology of oil strata leads to the fact that the productive layers of a well are flooded unevenly. In this work the causes for water cut in reservoirs are given, repair and insu (…)
The article considers а method for real-time forecasting the cutting tool life, considering as a blow-up mode its operation. The method based on the selection of a log-periodic component in the audio signal accompanying the cutting process. The model of this component contains as the main parameter the time taken as the tool life. To ensure the process control efficiency, when making a decision to stop (…)
Biomaterials are artificial or natural materials that replace diseased or damaged bone tissue, recently with increasing interest in interdisciplinary approaches, including e.g. bioengineers. Such materials must be mechanically strong and not cause undesirable reactions. Due to the many factors that need to be considered, choosing the right material becomes a challenge. The relevance of the study lies in (…)
The paper deals with the development of a transport robot control system with voice commands and simulation of their movement in Microsoft Robotics Developer Studio (MRDS) software product. The advantages of MRDS over other programmes are discussed. The programming language used was VPL, a visual programming environment for creating and debugging applications. It was designed multi-level control of the (…)
This article shows an example of designing an induction motor model. Calculation of electrical parameters of induction motor in Ansys Electronic Suite - Maxwell RMxprt. The finite-element analysis of the CAD model was performed both in two-dimensional space using Ansys Electronic Suite software of Maxwell RMxprt subprogram and in three-dimensional space using Ansys Mechanical software. The natural frequ (…)
Design solutions for the shape of the gear bodies depend on several factors such as the size of the wheel, material, production method or use. Cast forged or welded gears are used for larger gear wheels. One of the requirements for gear shape solutions is weight reduction. Such an effort can be achieved by changing the dimensions of the given wheel, while maintaining the required stiffness of the gearin (…)
The multi-motor drives, the typical examples of which are continuous lines (CL) for tension processing of various materials are complex and coupled MIMO higher-order nonlinear systems, which parameters are difficult to identify. The article focuses on a method for the design of a non-parametric black-box fuzzy model of a continuous production line with emphasis on minimal knowledge on the modelled syste (…)
The paper deals with issues and shows the relevance related to the use of composite milling heads for machining wide flat surfaces. A 3D model of a composite milling head is presented. Shown, the design of the composite milling head with four face mills allows the milling of planes in mutually perpendicular directions. The surface machined with a single pass milling is continuous in width. It allows to (…)
Today, greenhouse gas emissions and climate change stemming from the usage of fossil fuels are significant worldwide issues. Renewable energy, such as solar energy, is an environmentally friendly and non-polluting option. However, there are numerous worries regarding the possible influence of renewable energy integration on power system stability. Therefore, research is required to investigate and asses (…)
MoS2 thin films were grown by the pulsed laser deposition technique using a picosecond laser at a wavelength of 1030 nm. The plasma ion mean kinetic energy and density were estimated from the time-of-flight distributions measured using a Langmuir planar probe. It has been found that the mean kinetic energy decreases with increasing the laser pulse energy. This unusual effect is explained by the differen (…)
Aluminum alloy 6061-T6 is a commonly used material in various industries, including automotive parts manufacturing. However, its machining process can be challenging due to the occurrence of build-up edge (BUE) at the cutting edges. To address this issue, this research employed trochoidal milling to machine aluminum alloy 6061-T6 specimens, utilizing a small step over and a suitable depth of cut. The en (…)
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