Evaluation of Overall Equipment Effectiveness (OEE), its Optimization and analysis through Design of Experiment (DOE)

Abstract

For any industry, continuous availability of the equipment is needed, to stay in the competitive market. Overall
Equipment Effectiveness (OEE) is an important performance measure which indicates the current status of production
with least calculation to measure the losses and corrective actions to be taken to reduce it. An attempt has been done to
evaluate and analyse the existing overall equipment effectiveness of the critical machinesof company producingginning
machine parts. Grading system is of scale of five points which is used to identify the critical machine. Overall Equipment
Effectiveness of the identified critical machines is evaluated to get the reference value for design of experiment. By using
MiniTab16 software experimentationis performed on three factors and two levels of OEE. Main effect plots provide the
information regarding the most influencing factor for OEE and regression analysis gives the classic relationship among
availability, performance rate, quality rate and overall equipment effectiveness (OEE). Significance of each factor is
indicated by P-value in the given analysis. Finally contour plot and surface plot results into optimized values of the three
factors of OEE. This simulated value of OEE would be the useful information to the industry.