RESEARCH PAPER
Fault Risk Assessment of CNC Machine tools Based on DEA Considering Fault Correlation
1
Shandong Normal University, China
2
Shanghai University, China
A – Conceptualization; B – Methodology; C – Software; D – Validation; E – Formal analysis; F – Investigation; G – Resources; H – Data curation; I – Writing – original draft; J – Writing – review & editing; K – Visualization; L – Supervision; M – Project administration; N – Funding acquisition
Submission date: 2026-05-16
Final revision date: 2026-06-25
Acceptance date: 2026-08-07
Online publication date: 2026-09-04
KEYWORDS
TOPICS
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.
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| eISSN: | 2956-3860 |
| ISSN: | 1507-2711 |
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