Multi-objective optimization of stochastic flexible job shop undergoing reliability-based preventive maintenance and random machine failure for sustainable manufacturing system using RSM-TOPSIS-DESIRABILITY
摘要
Unexpected and Scheduled maintenance activities in production scheduling are prominent issues in environmentally responsible production systems that led to real-time scheduling and effective sustainable manufacturing systems. This study considers multi-objective optimization for stochastic flexible job shop scheduling problem undergoing reliability-based preventive maintenance, random machine breakdown and sequence-dependent setup time. Due date tightness factor (Ɗ), and routing flexibility (Ʀ), percentage of machine failure (ƥ), reliability-centered preventive maintenance (ℜ), and mean time to repair for random machine breakdown (Ƶ), are five input factors taken into consideration. Four performance measurements (Pms), i.e., total energy consumption cost, maximum flow time, total setup time and maximum tardiness, are used to assess system performance. A simulation-optimization is carried out utilizing TOPSIS and desirability approach. ANOVA indicates that model is significant with reasonable accuracy. The results show that input parameters, i.e., ℜ, ƥ, Ƶ, Ɗ, and Ʀ, significantly impact multi-response performance coefficient (MRPC). Further, Ɗ and Ʀ have emerged as major factors affecting MRPC. The combined TOPSIS-DESIRABILITY technique estimates the best system conditions for a considered sustainable manufacturing system. Validation results illustrate that the model can be used for future prediction as error is less than 1%. Considering energy aspect in stochastic flexible job shop undergoing simultaneously preventive maintenance and machine failure in dynamic job environment shows the novelty of the work.
Graphical abstract