A production planning optimization for multi parallel machine under withdrawal right

An optimal integrated maintenance for multi parallel workstations under returned products

“…This work is the continuation of [1] and [9] works. [1] dealt with a production scheme contains numerous similar workstations which has to meet a random demand respecting a certain service level.…”

“…The objective is to determine the optimal production plan characterized by the optimal number of machine, facility time and inventory levels. [9] deals the same problem of [1] considering the influence of the returned product by the market on the optimization problem. In our work, we propose a production and maintenance strategies where the production rate depend to the returned products and the maintenance strategy be determined according to the economical production plan where the degradation of equipment is influenced by the variation of production rates.…”

Imperfect Preventive Maintenance Planning Optimization for Leased Machines

“…In our work, based on the works of Medhioub et al (2014) and Zied et al (2015) we propose maintenance strategy integrated to production policy by considering the impact the variation of the production rates and imperfect preventive maintenance on the degradation degree of each machine and consequently the influence on the average number of failure and the optimal maintenance strategy. The contribution of this paper is that the decision about performing a PM activity is related to the average number of failures of the machine contrarily to previous works which considered in most cases the reliability level as a threshold.…”