Presenting an optimal lean maintenance strategy using fuzzy MADM

Maintenance has a key role in cost reduction, reducing the idle time and increasing production cost, quality, efficiency and reliability of industrial equipment and therefore fulfillment of the organizational objectives. In this paper, development of a practical model to define an optimized effective maintenance strategy using lean approach based on the views of maintenance experts at nine production plants is investigated. In the developed model, based on the uncertainty observed in the maintenance field, fuzzy logic combining DEMATEL, entropy and TOPSIS methods is utilized. In this method, a model is presented based on relationships among Lean-Enablers of the maintenance process using fuzzy DEMATEL, weighting maintenance indicators using entropy, and criteria ranking using fuzzy TOPSIS.