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This issue of the RECENT journal was edited with the support of: ContentsA Success Story about Clustering in Technical Textile and Composite Material Sectors: Bursa Model
RECENT J. (2025), 76:124-133 https://doi.org/10.31926/RECENT.2025.76.124 Abstract This study summarizes the cluster activities carried out in Bursa province in the field of technical textiles and composite materials. The article actually summarizes the steps of a success story in clustering and shows how to carry out such activities in the most efficient way for similar structures. This article is inspired and compiled from previous studies [17-26]. Within the scope of cluster development roadmap studies, a Cluster Coordination Unit (CCU) was established by the BCCI. Cluster expert support to Cluster Coordination Unit started after completion of the Cluster Strategy and Roadmap. Support to CCU has started with two full day “Cluster Development and Management” training specially designed for cluster management team. Training provided by CCU team, ensuring the team to understand key concepts of cluster phenomenon, cluster development stages and role of cluster coordination in the success of the clusters. Overall, the study provided a detailed view of past business practices and export initiatives, along with an assessment of the institutional support offered to the industry. The findings offered valuable insights into the evolving landscape of the textile industry, highlighting trends in material utilization, export techniques, and the effects of technological advancements on competitiveness and sustainability. Keywords technical textiles, composite materials, clustering, Bursa The 20Cr130 Alloy - Heat Treatments. Factors Influencing the Properties of Materials
RECENT J. (2025), 76:134-137 https://doi.org/10.31926/RECENT.2025.76.134 Abstract This paper analyses the influence of heat treatments on the mechanical and structural properties of the 20Cr130 stainless alloy. There have been applied various heat treatment processes, varying austenitisation temperature, the holding time and the cooling methods, in order to determine the changes induced in the microstructure and resulting mechanical behaviour. The results showed that the treatment temperature and cooling rate have a major impact on the size of the grains, the secondary phase formation and hardness. The study provides practical insight into the optimisation of heat treatments for industrial applications requiring specific performance from the 20Cr130 alloy. Keywords stainless steels, properties, heat treatments A Case Study: Evaluation of an Augmented Reality Application Developed for Biology Education
RECENT J. (2025), 76:138-143 https://doi.org/10.31926/RECENT.2025.76.138 Abstract Virtual Reality (VR) and Augmented Reality (AR) technologies, which have rapidly developed in fields such as industry, social life, entertainment, and education, have emerged as powerful tools due to their ability to enable users to visually interact with objects. This study presents an original mobile AR application designed for biology topics including anatomy, physiology, and experimental animals, and investigates its effects on student attitudes. A mixed-methods approach was employed to assess the impact of AR technology on students' attitudes toward the course. Quantitatively, a quasi-experimental design utilizing the "AR Application Attitude Scale" and qualitatively, structured open-ended interview questions were used. The results revealed that student attitudes improved by an average of 8.35% following the implementation of the AR tools. Content analysis of student responses to open-ended questions indicated that students believed AR applications increased course interest and significantly contributed to laboratory courses. Keywords Augmented Reality, Virtual Reality, biology education, animal anatomy Artificial Intelligence for Industrial Process Control versus Intelligent Process Control
RECENT J. (2025), 76:144-149 https://doi.org/10.31926/RECENT.2025.76.144 Abstract In the current industrial context, marked by technological innovations, where adaptability and efficiency requirements become determining factors of the extended automation process, the improvement of production systems relies on selecting an optimal control method. This article provides a comparative analysis of two complex conceptual frameworks implemented in industrial process control: artificial intelligence (AI) and intelligent control. By presenting the functional foundations of each approach, the study highlights characteristics such as performance in environments with variable or uncertain behaviour, implementation complexity, operational flexibility, reliability, and the volume of data required. The paper highlights the constraints and benefits of each method, through a comparative report based on specific performance parameters. The results indicate that intelligent control stands out in terms of efficiency and robustness in standardized applications with precise requirements, whereas AI, due to machine learning algorithms, delivers superior performance in dynamic and complex environments. In line with the analysis of the specific characteristics of the industrial process, the article provides a technical argument for determining the optimized control method. Keywords artificial intelligence, intelligent automation, control systems, real-time control, programmable controllers Microstructural and Functional Changes Induced by Cryogenic Treatment in 40Cr130, 20Cr130 and X5CrNi18-10 Stainless Steels
RECENT J. (2025), 76:149-153 https://doi.org/10.31926/RECENT.2025.76.149 Abstract Cryogenic treatment is an advanced thermal processing technology used to optimise the properties of stainless steels by exposing them to extremely low temperatures. This paper investigates the influence of cryogenic treatment on the microstructure and mechanical behaviour of martensitic 40Cr130 and 20Cr130 stainless steels, as well as on austenitic X5CrNi18-10 steel. The results revealed a strong transformation of the martensitic phases and a significant reduction of residual austenite in the case of martensitic steels, leading to an increase in hardness and, implicitly, wear resistance. In the case of X5CrNi18-10 austenitic steel, cryogenic treatment caused subtle microstructural changes that positively influenced dimensional stability. The study highlights the potential of cryogenic treatment as an effective method for improving the durability and performance of stainless steels, opening new perspectives for its application in industries requiring high reliability and strength. Keywords steels, heat treatment, cryogenic treatment AlMg5 Alloy Behaviour under Different Solidification Conditions
RECENT J. (2025), 76:154-158 https://doi.org/10.31926/RECENT.2025.76.154 Abstract This paper analyses the influence of heat treatments on the mechanical and structural properties of the 20Cr130 stainless alloy. There have been applied various heat treatment processes, varying austenitisation temperature, the holding time and the cooling methods, in order to determine the changes induced in the microstructure and resulting mechanical behaviour. The results showed that the treatment temperature and cooling rate have a major impact on the size of the grains, the secondary phase formation and hardness. The study provides practical insight into the optimisation of heat treatments for industrial applications requiring specific performance from the 20Cr130 alloy. Keywords stainless steels, properties, heat treatments
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