Document Type : Research Paper

Authors

• mohammad hasan sadeghpour ¹
• Ali Mohtashami ²
• Seyed Habibolah Rahmati ³
• Mostafa Zandieh ⁴

¹ Doctoral student, Department of Industrial Management, Faculty of Management and Accounting, Qazvin Branch, Islamic Azad University, Qazvin, Iran.

² Associate Professor of Industrial Management, Faculty of Management and Accounting, Qazvin Branch, Islamic Azad University, Qazvin, Iran

³ Assistant Professor of Industrial Engineering, Faculty of Industrial and Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran.

⁴ Professor of Industrial Management and Information Technology, Faculty of Management and Accounting, Shahid Beheshti University, Tehran, Iran.

Abstract

Maintenance is a significant cost factor in supply chains and production systems. Intelligent maintenance systems are gaining global interest with the rise of IT-based technologies. This study focuses on a new reliability-centered maintenance (RCM) method, where an intelligent system decides on repair or replacement based on system reliability in the practical flexible job shop scheduling problem (FJSP). The research introduces a balance by integrating industrial units' green production and energy consumption with traditional objectives like production costs and system reliability in a multi-objective framework. Another key aspect is the consideration of less developed regions as a social factor in the energy calculation model, resembling the Ministry of Energy's computational models. The reliability model is tailored for a complex system with multiple machines having time-dependent lifespans and repair probabilities, where operation times, maintenance times, and post-repair reliability levels are all stochastic. Metaheuristic algorithms combined with simulation-based optimization are used to solve the model. Statistical and non-statistical methods are used to depict the performance of the algorithms. The study shows that these algorithms effectively solve complex multi-objective stochastic problems and can be considered as a decision support system (DSS) for software developers for real world developers.

Keywords

• Maintenance system prediction
• reliability-based maintenance
• simulation-based optimization
• flexible job shop

Main Subjects

• production and operations management