Maintenance optimisation for multi-component system with structural dependence: Application to machine tool sub-system

Duc-Hanh Dinh (1) , Phuc Do Van (1) , Benoît Iung (1)

1 CRAN - Centre de Recherche en Automatique de Nancy

Maintenance plays a key role in controlling manufacturing systems within normal operations. Consistent control within production requirements is difficult due to the complexity of manufacturing systems; that is, many components that are economically and structurally interdependent. Structural dependence between components implies that maintenance requires the disassembly of other, obstructing components. The disassembly may affect the failure rate of components and modify the maintenance plan. We proposed a maintenance optimisation model considering both economic and structural dependencies between components. The impact of structural dependence on the reliability of components was reviewed using a Proportional Hazard Model. The model implemented influencing factors such as component features, the system structure, and the production context. It supported a more accurate reliability assessment. We derived an adaptive maintenance strategy that integrated these dependencies and developed a cost-based optimisation model to determine a prudent maintenance plan. We conducted a case study on a spindle of a milling machine to prove feasibility and the model's ability to reliably assess and optimally maintain operations.

Mots clés: Disassembly; Maintenance; Optimization

Domaines: Automatique / Robotique

Duc-Hanh Dinh, Phuc Do Van, Benoît Iung. Maintenance optimisation for multi-component system with structural dependence: Application to machine tool sub-system. CIRP Annals - Manufacturing Technology, 2020, 69 (1), pp.417-420. ⟨10.1016/j.cirp.2020.04.004⟩. ⟨hal-02863707⟩