ppt

1. Selecting a suitable maintenance strategy under uncertain conditions using
DEMATEL-ANP, IT2F and TOSIS (Case- Amhara Metal Industry and Machine
Technology Development Enterprise)
Adviser:- Betseha T ( Phd)

2. Introduction
 Maintenance means restoring the equipment to perform its function
 Corrective and preventive maintenance are two broad categories
 It consumes around 75% of the production cost
 MCDM techniques have the ability to handle maintenance decision
issue
 Single technique of MCDM has its drawback

3. Cont.…
 MCDM technique needs input data
 Its main purpose is to propose an integrated fuzzy MCDM technique
 It integrates DEMATEL-ANP, IT2F and TOPSIS

4. Problem statement
 unavailability of maintenance strategy for a new factory
 Availability of research gaps

5. General objective
 Determining optimal maintenance strategy
Specific objective
 Identify Criteria, sub-criteria and alternative maintenance strategy
 Developing ANP model
 Determining weights of criteria
 Prioritizing the alternative maintenance strategy

6. Significance of the study
 Solve maintenance strategy problems
 Contributes a great domain of knowledge

7. Scope of the study
 Determining maintenance strategy for the case company
 uses criteria approved by management
 The result is implemented only for case company

8. Literature review
Multi-criteria decision-making technique
AHP has its limitation on
uncertainty in decision-making
 unable to change qualitative terms into quantitative
Modified AHP(ANP) has its limitation on
Uncertainty in decision making
 Unable to convert the qualitative expression into quantitative

9. Cont.….
Fuzzy-AHP has its limitation on
 uncertainty in decision making
Don’t allow to filter the decision criteria
Fuzzy-AHP and TOPSIS have its limitation on
 Doesn’t allow to eliminate less important decision criteria
 Uncertainty in decision making

10. Cont.…
hybrid goal programming, the BWM-TOPSIS have a limitation on
 uncertainty in decision making
 the objective function is not achieved simultaneously
IT2F, AHP and TOPSIS have limitations on
 the author doesn’t allow to consider sub-criteria
 Limited number of criteria
 doesn’t allow to eliminate less important criteria

11. Methodology( method and material)
Literature review
 Reviewing papers published on MCDM techniques
 Examining individual and integrated MCDM algorithms
 Identifying criteria, sub-criteria and alternative maintenance strategy

12. Cont.…
Questioner
Decision makers or experts fill pairwise comparison of
Criteria
 sub-criteria
 alternative maintenance strategies

13. Cont.…
Data analysis
Three major activities are performed here
 Determining influential criteria and eliminating less important criteria
 Determining the weight of criteria and sub-criteria
 Prioritizing the alternative maintenance strategy

14. Flow chart for the methodology of the proposed model