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Overall Equipment Effectiveness Measurement: Weighted Approach Method and Fuzzy Expert System

Chapter
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 186)

Abstract

This chapter is intended to enhance the original Overall Equipment Effectiveness (OEE). Calculating plant/equipment OEE can be very helpful for monitoring trends (such as whether a given plant is improving OEE over time) or as a rough measure of where a manufacturng plant lies in the OEE benchmarking spectrum. OEE concept in Total Productive Maintenance (TPM) implementation truly reduces manufacturing complexity into simple, intuitive presentation of information. The proposed approaches establish the functional technique for improvement of the effectiveness of production lines operating and dealing with uncertainty of the six major losses to OEE. The losses associated with production and limits for that losses are the major indexes of the production line performance, because it enables direct evaluation of production line output. The OEE is the process, which is acquired to specify an equivalent weight setting of every single element, even if, each concerning losses are totally different. Hence, the study proposes a weighted approach, to identify dissimilarity in weighting of each OEE element. Theoretical values for the losses improve the measurement of the OEE and Fuzzy analysis can help the decision makers to assess OEE for plant performances. Further, proposed fuzzy methodology can be used to reduce the indecisiveness. Therefore this technique introduces fuzzy theory for OEE computation and will also assist decision makers to evaluate uncertainty and imprecision. The proposed concepts are used to find the OEE for the manufacturing plant, as well as to set the target for the plant and the area to focus for their improvement.

Keywords

Availability Decision making Fuzzy analysis OEE Performance rate Production losses Quality rate Signed rating TPM effectiveness Weighted rating 

List of Acronyms

A

Availability

BD

Break-Down

JIPM

Japan Institute of Plant Maintenance

MI

Minor/Idling stoppages

OEE

Overall Equipment Effectiveness

P

Performance rate

PE

Plant Effectiveness

Q

Quality rate

RL

Reject/rework Losses

RS

Reduced Speed

SA

Setup Adjustment

SL

Start-up Losses

TPM

Total Productive Maintenance

Notes

Acknowledgments

The authors would like to thank Dr. Ponnammal Natarajan, Former Director of Research, Anna University, Chennai, India. Currently Advisor (Research and Development), Rajalakshmi Engineering College, for her intuitive ideas and fruitful discussions with respect to the paper’s contribution and the Management of Velammal College of Engineering and Technology, Madurai and Dr. R. Vivekaanandhan, Assistant Professor, Department of English, Velammal College of Engineering and Technology, Madurai, for his constant encourage and support to complete the task.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, Velammal College of Engineering and TechnologyAnna UniversityMaduraiIndia
  2. 2.Department of Mathematics, Velammal College of Engineering and TechnologyAnna UniversityMaduraiIndia

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