Additive manufacturing creates parts in layers without using formative tools. Compared to established manufacturing processes, additive manufacturing offers many advantages. However, only a few ...research institutions and technology-leading companies use additive manufacturing for end-use part production because relevant challenges have not been sufficiently researched yet. Missing restrictions become apparent in the available geometrical accuracy. The objective of this investigation was the experimental determination of dimensional tolerances using standard parameters. To this end, a methodical procedure was set up. Based on experimentally determined deviations, dimensional tolerances were derived.
This article introduces process mining as an innovative approach to enterprise data analysis, offering a systematic method for extracting, analyzing, and visualizing digital traces within information ...systems. The technique establishes connections within data, forming intricate process maps that serve as a foundation for the comprehensive analysis, interpretation, and enhancement of internal business processes. The article presents a methodical procedure designed to analyze processes using process mining. This methodology was validated through a case study conducted in the Fluxicon Disco software (version 3.6.7) application environment. The primary objective of this study was to propose and practically validate a methodical procedure applied to industrial practice data. Focusing on the evaluation and optimization of manufacturing processes, the study explored the integration of a software tool to enhance efficiency. The article highlights key trends in the field, providing valuable insights into process flows and identifying areas for improvement. The results contribute to the growing body of knowledge in process mining, emphasizing its applicability in fostering a more efficient and competitive manufacturing environment. In the model example, we successfully achieved a reduction in the time required for production cycles by 15% and improved resource utilization by 20%. This resulted in an increased process efficiency and a potential reduction in the required number of workers by up to 10%. These outcomes offer promising evidence of the advantages of our method and its application in an industrial setting.
It is currently necessary to solve several bottlenecks in railway infrastructure. This is important because it is needed to improve railway infrastructure to be faster, safer and of high quality. ...Rail crossings on railway lines are also a significant bottleneck. There are still many rail crossings and a high number of accidents in many countries of the European Union. The issue of rail crossings must be addressed because many rail crossings reduce the flow of road and railway traffic. However, it is about the safety of transportation, as several serious and fatal traffic accidents have happened at rail crossings. Many times, the perspective ratios of the rail crossings are a significant problem and the main cause of traffic accidents. Therefore, it is important to propose a certain methodological procedure for the assessment of the perspective ratios in rail crossings. The main contribution goal is to briefly describe the development of the rail crossings number according to security devices and analyze the factors influencing the rail crossing potential and restrictive elements factors of the rail crossings as a matter of priority. Great emphasis is placed on the perspective ratios as a key safety factor. The heuristic procedure of the perspective ratios determination is presented within the proposals. Subsequently, there are analyzed the perspective ratios at the selected rail crossing with the light protection device and to assess whether these ratios are safe for the given crossing in the event of the light protection device failure. The rail crossing in the Czech Republic has been selected as a representative on railway line no. 196 from České Budějovice to Horní Dvořiště in the empirical part of the research. The rail crossing has been analyzed in terms of its characteristics and parameters and has been assessed as complying with legal regulations.
The paper deals with the clamping fixture jaws procedure design. The clamping jaw design methodology developed summarizes complex factors. These factors affect the clamping jaws design for the ...workpiece. Methodical design procedure consists of three stages. Namely, there are input date summary, clamping fixture design and the last design verification. The ANSYS simulation was used for the verification developing methodology. The components model simulation aim has been studied impact of clamping force position change to the cutting force reactions change. Research was conducted with different positions of jaws.
Cilj ovoga rada jest prikazati jedan od načina dijagnosticiranja
i znanstvenog verifi ciranja metodičkog procesa učenja određenoga
gimnastičkog elementa putem biomehaničke analize. Kao primjer modela ...na kojemu je pokus izveden, odabran je osnovni akrobatski element – premet naprijed. Na temelju nastavne metode utvrđene tijekom niza godina praktičnog nastavnog iskustva (trenera i gimnastičara) prikazan je postupak znanstvenog verifi ciranja i određivanja iskoristivosti određene metodičke vježbe kroz proces
proveden u osam faza, s time što je svaka faza precizno defi nirana i planirana. Ovim radom nastojimo doprinijeti širem razumijevanju procesa učenja te njegovoj modernizaciji, kao i ukazati na točniji i učinkovitiji pristup tom pitanju.
The use of 12 variants of medium extensive circuits in the physical education lesson, for 8 months, 2 times a week, for 16 minutes each (total volume 512 minutes), at the age of 14-15 years, will ...influence the modification of the main morphological parameters of the subjects included in the experiment.
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