Ústav výrobních strojů, systémů a robotiky
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- ItemAgeing Management in the Prevention of Major Accidents in the Czech Republic(The Italian Association of Chemical Engineering, 2024-11-01) Kotek, Luboš; Křivánek, David; Mukhametzianova, Leisan; Trávníček, PetrThis study examines the phenomenon of ageing in the context of major accident prevention, with a particular focus on the growing recognition of ageing as a significant contributor to industrial accidents. The concept of ageing has evolved from its initial association with material degradation to encompass a broader range of factors, including equipment obsolescence, spare parts availability and staff expertise. Legislation such as the European SEVESO III Directive has incorporated the issue of aging into safety management systems, reflecting its critical importance. A mixed-methods approach was employed, combining a literature review with a questionnaire survey, for the purpose of assessing ageing management practices in industrial facilities. The survey was completed by 103 respondents from the Czech Environmental Inspectorate. The results demonstrated that while 67% of respondents considered aging to be significant, gaps in documentation and planning still posed safety risks. A chi-square test revealed a statistically significant correlation between facility age and major accidents (p < 0.05). These findings highlight the necessity for enhanced awareness and training in aging management, advocating for structured information dissemination and methodological improvements in future studies.
- ItemTextura povrchu Profilové a plošné parametry(Vysoké učení technické v Brně; Fakulta strojního inženýrství; Ústav výrobních strojů, systémů a robotiky, 2024-09-09) Jankových, Róbert; Polzer, AlešTextura povrchu - popis profilových a plošných parametrů dle norem řady: ČSN EN ISO 4287, 4288; 13565 a 21920.
- ItemThe Process Simulation Using by Virtual Reality(Elsevier, 2014-03-25) Tůma, Zdeněk; Tůma, Jiří; Knoflíček, Radek; Blecha, Petr; Bradáč, FrantišekNowadays companies can solve production systems problems by variety of software solutions, but in practice it is known that it is often difficult to interpret these outputs, illustrate and to further integrate. One possibility is the use of augmented virtual reality for the planning of these systems. This article deals with the construction of the experimental sorting workplace as a model case of the production system. Weak points of solution are solved using augmented virtual reality, which helps to simulate the process in real time, in this case the virtual displayed product moving on belt conveyor before testing the real piece.
- ItemCNC Machine Tool Safety From The Aspect Of Hazard Perception By Operating Personnel(MM publishing, 2022-10-01) Blecha, Petr; Marek, Jiří; Blecha, Radim; Rozehnalová, Jana; Heinrich, Petr; Pacher, PetrSafety of machinery, including CNC machine tools, must be ensured in all phases of their life cycle. The operation and maintenance phase is the most important as it represents the longest period in the machine ' s technical life linked to occurrence of work injuries. Every designer of a safe machine must consider also any reasonably foreseeable incorrect behaviour of the machine operator. The latest revision proposal of the Machinery Directive 2006/42/ES sets new requirements on solution of CNC machine tools safety. Aside from assessing the impact of cybersecurity on the machinery safety, the manufacturers will now have to take into account also the psychological stress arising from human-machine interaction. From the psychological point of view, the operating personnel of multifunctional CNC machine tools experience high level of stress when machining complicated and complex-shaped workpieces as the material often costs as much as 30% of the price of the machine; therefore, any mistake of the operator resulting in a nonconforming product causes high financial loss. Influence of various stressors on the operating personnel leads to their impaired concentration on the performed tasks, which may be accompanied by insufficient perception of the hazards associated with the machine operation and thus may lead to occurrence of work injuries. The presented paper discusses the factors that may put the operators of multifunctional CNC machine tools under psychological stress and analyses possible application of the virtual reality technology to assess the ability to perceive the hazards linked to such a complex machine on a group of university students representing both operators (beginners) and designers of a multifunctional CNC machine tool.
- ItemIssues of Cybersecurity of The Production System(MM Publishing, 2022-12-01) Maradová, Karla; Blecha, Petr; Blecha, Radim; Rozehnalová, Jana; Frkal, VojtěchCybersecurity of production systems is a very topical issue in response to the dangers associated with the very high number of cyber-attacks in Europe. The current digital transformation of the industry associated with the digitalisation of manufacturing brings both the positives associated with increased flexibility and productivity of production, and the negatives associated with the risk of data loss, data alteration or blocking of control systems. Cybersecurity issues are also reflected in the revision of EU harmonisation legislation governing the requirements for placing products on the market or in service. It appears that the issue of cyber security needs to be addressed comprehensively across the entire infrastructure of a manufacturing plant. The present paper focuses on the relationship between machinery security and OT/IT security and presents the results of a study aimed at identifying potential sources of threats in an integrated manufacturing system.