Table of Contents



    • Increasing the resilience of critical entities in response to the dynamic spectrum of threats

      pg(s) 79-82

      Achieving a comprehensive approach to the issue of resilience of entities that are critical to the proper functioning of the national economy requires the creation of a comprehensive framework addressing the resilience of critical entities to all hazards, whether natural or anthropogenic, accidental or intentional. For this purpose, good practice implies the use of European and international standards and technical specifications that are relevant for both security measures and resilience measures applicable to critical infrastructure.
      Precisely, the presentation of updated information on a possible approach that requires innovation in the field of security and protection of critical infrastructure is the content of this publication.


    • Intelligent Energy Guardian for Polygeneration Devices: Design, Implementation, and Experimental Evaluation

      pg(s) 83-85

      The article presents an intelligent energy guardian for a polygeneration device. The proposed solution aims to optimize energy usage and minimize wastage by incorporating smart control algorithms that continuously monitor and adjust the energy flow between different subsystems of the device. The energy guardian utilizes machine learning techniques to learn the device’s energy usage patterns and adapt to changing conditions, such as varying energy demands and supply constraints. The article outlines the design and implementation of the energy guardian, and presents experimental results that demonstrate its effectiveness in improving energy efficiency and reducing operational costs. Overall, the intelligent energy guardian offers a promising solution for enhancing the performance of polygeneration devices and promoting sustainable energy use.

    • Major operational characteristics of an innovative ceramic beehive

      pg(s) 86-89

      Prototypes of an innovative collapsible beehive, built of long-lasting, structural elements of quartz ceramics with high atmospheric resistance and the presence of air cavities with thermal insulation properties, were prepared. Prescription compositions, an original set of molds, and an adequate heat treatment regime applicable to obtain the structural details were developed. The role of the various technological factors in the formation of the performance indicators of the end products was analyzed. The main characteristics of the prepared experimental prototypes and their major functional advantages in comparison with the existing standard and traditional hives were observed. The presented innovative beehive provides a favorable natural habitat for the normal and safe development of bee families and allows the full application of modern approaches for the efficient and ecological production of high-quality natural apian products.

    • Determining the quality of renovation layers using laser technology

      pg(s) 90-92

      The paper presents the results of research aimed at determining the quality of renovation layers using laser technology. In order to repair and renovate shaped parts of molds for casting aluminum alloys under high pressure, samples of experimental welds were prepared on the base material quality 1.2343 (Dievar). The renovation layers were created using additional materials Dievar, UTP A 7002 and NIFIL NiCu7 res. NiCu7 with Dievar combination. The microstructures on the cross-sections of the deposits were checked using the light microscopy technique. The technique of scanning electron microscopy and semi-quantitative EDX microanalyses were analyzed distribution of alloys in deposits. The microhardness of the deposits was determined.

    • Processing and properties of polymer – mineral compositions

      pg(s) 93-96

      Recycled plastics find more and more applications. In addition to recycled bulky products, the number and type of products also being used in polymer -mineral composites based on recycled PE and PP. One of the paving products sought by investors are traditional concrete blocks. However, they have their drawbacks, they are heavy, so their transport, logistics must meet stricter requirements, are products that are not very resistant to cracking as a result of impact, are fragile. Mineral-polymer products are the solution to such problems. Innovative compositions for their processing are a polymer – mineral mixture, containing mainly recycled material and mineral fillers (sand, ceramic waste dust). They are therefore products made of waste materials from recycling, recyclates and flakes of polymer materials.
      The technology for producing the polymer – mineral composition is based on the extrusion and compression molding technology of the compositions obtained. Polymer compositions are secondary materials, after recycling in the form of recyclates, flakes, and waste plastics, mineral fillers, that is waste ceramic dust, sand as well as activating substances (dyes, plasticizers, adhesion compatibilizers, polymermineral wetting agents). As a result, plastic waste and ceramic waste that cannot be recycled will be effectively processed.
      The sprinklers were made of various polymer materials (PP, HDPE) as well as characterized by different shape of working elements and a variable degree of contamination with mineral sludge. The research on the structure of manufactured materials and melt flow rate are presented. The influence of the type of material and mineral deposits on the process ability of the tested polymer-mineral compositions was determined.

    • Statistical Analysis of the Mechanical Properties of Aluminum Alloys EN AW-6060 (AlMgSi0,5)

      pg(s) 97-100

      Aluminum belongs to the group of light metals, which as pure aluminum does not have good enough mechanical properties for most engineering requirements. Therefore, in order to improve the exploitation properties of aluminum, it undergoes an alloying process, where different chemical elements are added to it, each of which has its own different role. Alloying is carried out mostly to increase hardness and tensile strength, then to increase machinability and stiffness, and sometimes toughness and castability. The most important chemical elements used for alloying aluminum are magnesium, copper, silicon, zinc and manganese, while chromium, titanium and iron are used as impurities. This paper presents the parameters of descriptive statistic mechanical properties of aluminum alloys EN AW-6060 (AlMgSi0,5).