An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive Manufacturing
Process integrity, insufficient data, and system complexity in the automotive manufacturing sector are the major uncertainty factors used to predict failure probability (FP), and which are very influential in achieving a reliable maintenance program. To deal with such uncertainties, this study propo...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-11-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/22/7758 |
| _version_ | 1797510453531770880 |
|---|---|
| author | Hamzeh Soltanali Mehdi Khojastehpour José Torres Farinha José Edmundo de Almeida e Pais |
| author_facet | Hamzeh Soltanali Mehdi Khojastehpour José Torres Farinha José Edmundo de Almeida e Pais |
| author_sort | Hamzeh Soltanali |
| collection | DOAJ |
| description | Process integrity, insufficient data, and system complexity in the automotive manufacturing sector are the major uncertainty factors used to predict failure probability (FP), and which are very influential in achieving a reliable maintenance program. To deal with such uncertainties, this study proposes a fuzzy fault tree analysis (FFTA) approach as a proactive knowledge-based technique to estimate the FP towards a convenient maintenance plan in the automotive manufacturing industry. Furthermore, in order to enhance the accuracy of the FFTA model in predicting FP, the effective decision attributes, such as the experts’ trait impacts; scales variation; and assorted membership, and the defuzzification functions were investigated. Moreover, due to the undynamic relationship between the failures of complex systems in the current FFTA model, a Bayesian network (BN) theory was employed. The results of the FFTA model revealed that the changes in various decision attributes were not statistically significant for FP variation, while the BN model, that considered conditional rules to reflect the dynamic relationship between the failures, had a greater impact on predicting the FP. Additionally, the integrated FFTA–BN model was used in the optimization model to find the optimal maintenance intervals according to the estimated FP and total expected cost. As a case study, the proposed model was implemented in a fluid filling system in an automotive assembly line. The FPs of the entire system and its three critical subsystems, such as the filling headset, hydraulic–pneumatic circuit, and the electronic circuit, were estimated as 0.206, 0.057, 0.065, and 0.129, respectively. Moreover, the optimal maintenance interval for the whole filling system considering the total expected costs was determined as 7th with USD 3286 during 5000 h of the operation time. |
| first_indexed | 2024-03-10T05:31:42Z |
| format | Article |
| id | doaj.art-a166a252837a4dd69c73afc1de631605 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T05:31:42Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a166a252837a4dd69c73afc1de6316052023-11-22T23:12:59ZengMDPI AGEnergies1996-10732021-11-011422775810.3390/en14227758An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive ManufacturingHamzeh Soltanali0Mehdi Khojastehpour1José Torres Farinha2José Edmundo de Almeida e Pais3Department of Biosystems Engineering, Ferdowsi University of Mashhad, Mashhad 9177948974, IranDepartment of Biosystems Engineering, Ferdowsi University of Mashhad, Mashhad 9177948974, IranCentre for Mechanical Engineering, Materials and Processes (CEMMPRE), 3030-199 Coimbra, PortugalEIGeS—Research Centre in Industrial Engineering, Management and Sustainability, Lusófona University, Campo Grande 376, 1749-024 Lisboa, PortugalProcess integrity, insufficient data, and system complexity in the automotive manufacturing sector are the major uncertainty factors used to predict failure probability (FP), and which are very influential in achieving a reliable maintenance program. To deal with such uncertainties, this study proposes a fuzzy fault tree analysis (FFTA) approach as a proactive knowledge-based technique to estimate the FP towards a convenient maintenance plan in the automotive manufacturing industry. Furthermore, in order to enhance the accuracy of the FFTA model in predicting FP, the effective decision attributes, such as the experts’ trait impacts; scales variation; and assorted membership, and the defuzzification functions were investigated. Moreover, due to the undynamic relationship between the failures of complex systems in the current FFTA model, a Bayesian network (BN) theory was employed. The results of the FFTA model revealed that the changes in various decision attributes were not statistically significant for FP variation, while the BN model, that considered conditional rules to reflect the dynamic relationship between the failures, had a greater impact on predicting the FP. Additionally, the integrated FFTA–BN model was used in the optimization model to find the optimal maintenance intervals according to the estimated FP and total expected cost. As a case study, the proposed model was implemented in a fluid filling system in an automotive assembly line. The FPs of the entire system and its three critical subsystems, such as the filling headset, hydraulic–pneumatic circuit, and the electronic circuit, were estimated as 0.206, 0.057, 0.065, and 0.129, respectively. Moreover, the optimal maintenance interval for the whole filling system considering the total expected costs was determined as 7th with USD 3286 during 5000 h of the operation time.https://www.mdpi.com/1996-1073/14/22/7758automotive industryBayesian networkfault tree analysisfuzzy set theorymaintenance optimizationuncertainty |
| spellingShingle | Hamzeh Soltanali Mehdi Khojastehpour José Torres Farinha José Edmundo de Almeida e Pais An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive Manufacturing Energies automotive industry Bayesian network fault tree analysis fuzzy set theory maintenance optimization uncertainty |
| title | An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive Manufacturing |
| title_full | An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive Manufacturing |
| title_fullStr | An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive Manufacturing |
| title_full_unstemmed | An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive Manufacturing |
| title_short | An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive Manufacturing |
| title_sort | integrated fuzzy fault tree model with bayesian network based maintenance optimization of complex equipment in automotive manufacturing |
| topic | automotive industry Bayesian network fault tree analysis fuzzy set theory maintenance optimization uncertainty |
| url | https://www.mdpi.com/1996-1073/14/22/7758 |
| work_keys_str_mv | AT hamzehsoltanali anintegratedfuzzyfaulttreemodelwithbayesiannetworkbasedmaintenanceoptimizationofcomplexequipmentinautomotivemanufacturing AT mehdikhojastehpour anintegratedfuzzyfaulttreemodelwithbayesiannetworkbasedmaintenanceoptimizationofcomplexequipmentinautomotivemanufacturing AT josetorresfarinha anintegratedfuzzyfaulttreemodelwithbayesiannetworkbasedmaintenanceoptimizationofcomplexequipmentinautomotivemanufacturing AT joseedmundodealmeidaepais anintegratedfuzzyfaulttreemodelwithbayesiannetworkbasedmaintenanceoptimizationofcomplexequipmentinautomotivemanufacturing AT hamzehsoltanali integratedfuzzyfaulttreemodelwithbayesiannetworkbasedmaintenanceoptimizationofcomplexequipmentinautomotivemanufacturing AT mehdikhojastehpour integratedfuzzyfaulttreemodelwithbayesiannetworkbasedmaintenanceoptimizationofcomplexequipmentinautomotivemanufacturing AT josetorresfarinha integratedfuzzyfaulttreemodelwithbayesiannetworkbasedmaintenanceoptimizationofcomplexequipmentinautomotivemanufacturing AT joseedmundodealmeidaepais integratedfuzzyfaulttreemodelwithbayesiannetworkbasedmaintenanceoptimizationofcomplexequipmentinautomotivemanufacturing |