Sep 2026· Eksploatacja I Niezawodnosc-maintenance and Reliability· 0 citations· 33 references
Abstract
Aiming at the problems of failure correlation, few fault data samples, and too simple evaluation indicators in the existing Failure Mode, Effects and Criticality Analysis (FMECA) of CNC machine tools, a comprehensive risk dynamic assessment method for CNC machine tools is proposed that integrates the degree of fault impact,failure frequency and consequence evolution characteristics. DEMATEL/ISM/ANP, Bayes, Copula, statistical analysis, cloud model and other methods are used to evaluate the failure impact degree, failure frequency,failure rate, failure maintenance time,failure maintenance difficulty,maintenance ergonomics requirements and maintenance cost. Accordingly, the data envelopment analysis method is introduced to form an index evaluation matrix and evaluate the failure risk. Finally, an example of a series of domestic machining centers is used to verify the effectiveness of the method.
This study proposes an SRGM considering change point, fault removal efficiency, and fault detection rate, unlike traditional models, considers that the fault detection rate depends not only on the number of faults detected but also on the remaining number of faults that have not been detected.
High-voltage disconnect switches (HVDSs) are crucial for ensuring visible electrical isolation but often operate under challenging environmental conditions. While current monitoring methods can detect faults, simply identifying them is not enough for effective maintenance planning or efficient resource management. Elec...
Arafat Fousseni, A. Awada, Mounia Achouch et al.· Energies· 0 citations
The failure mode and effect analysis (FMEA), as an effective proactive reliability analysis technique, plays an important role in system fault detection and reliability maintenance due to its pre-analysis capability. Although traditional FMEA is widely used in practice, it has some limitations in the expression of fuzz...
General Background: Equipment reliability and preventive maintenance are essential for maintaining production continuity and minimizing unplanned downtime in manufacturing systems. Specific Background: Circular Loom machines are central to woven bag production, recording 262 failures and 87,230 minutes of downtime betw...
Maulida Durrotun Nafis, J. A. S. Z.S.· Indonesian Journal of Innova...· 0 citations
The research aims to reduce the risks of the Al-Mahmoudiyah residential complex project in Baghdad Governorate, using the Failure Mode and Effects Analysis (FMEA) methodology. It seeks to develop appropriate treatments and procedures to reduce these risks. FMEA is considered an effective tool for evaluating and reducin...
Kabas Zuhir Alhasani, Salam Abdul Sattar Abdul Jabbar, Alla Hussein Ansaf· مجلة الإدارة والاقتصاد· 0 citations
Failure mode and effect analysis (FMEA) is a systematic and proactive risk prevention and management tool used to identify and assess risks of potential or known failure modes within a system, product or service. However, the traditional FMEA has been criticized for a variety of drawbacks, which limit its efficiency an...
Ran Liu, Tian-Yu Liu, Qiang Li et al.· Science in progress· 0 citations
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