TABLE OF CONTENTS CHAPTER NO. TITLE PAGE NO. LIST OF TABLES LIST OF FIGURES LIST OF SYMBOLS AND ABBREVIATIONS

Transcription

1 vii TABLE OF CONTENTS CHAPTER NO. TITLE PAGE NO. ABSTRACT LIST OF TABLES LIST OF FIGURES LIST OF SYMBOLS AND ABBREVIATIONS iii xi xv xviii 1 INTRODUCTION BACKGROUND OF RESEARCH MOTIVATION FOR THIS RESEARCH SCOPE OF THE RESEARCH ORGANIZATION OF THESIS 4 2 LITERATURE REVIEW INTRODUCTION MAINTENANCE MANAGEMENT MAINTENANCE STRATEGIES SELECTION OF MAINTENANCE STRATEGY MCDM TECHNIQUES MCDM Approach AHP Approach TOPSIS Approach VIKOR Approach FUZZY SET THEORY SUMMARY 30

2 viii CHAPTER NO. TITLE PAGE NO. 3 MSS USING AHP AND FAHP INTRODUCTION PROBLEM DESCRIPTION SOLUTION METHODOLOGY THROUGH AHP Textile Industry Application FUZZY AHP METHODOLOGY Fuzzy Logic in AHP Case Study of Textile Industry SENSITIVITY ANALYSIS SUMMARY 58 4 MSS USING TOPSIS AND FUZZY TOPSIS INTRODUCTION PROBLEM DESCRIPTION SOLUTION METHODOLOGY THROUGH FAHP-TOPSIS Paper Industry Application SOLUTION METHODOLOGY THROUGH FUZZY TOPSIS Case Study of a Paper Industry SENSITIVITY ANALYSIS SUMMARY 90 5 MSS USING VIKOR AND FUZZY VIKOR INTRODUCTION SOLUTION METHODOLOGY THROUGH FAHP-VIKOR 91

3 ix CHAPTER NO. TITLE PAGE NO Paper Industry Application THE PROPOSED FUZZY VIKOR MODEL Case Study - Paper Industry SENSITIVITY ANALYSIS SUMMARY MSS USING AHP-TOPSIS-LP MODEL INTRODUCTION PROBLEM DESCRIPTION AHP-TOPSIS AND LP SOFTWARE DEVELOPMENT TEA INDUSTRY APPLICATION SUMMARY CONCLUSION CONTRIBUTIONS OF THIS RESEARCH WORK SCOPE FOR FUTURE WORK 133 APPENDIX 1: APPENDIX 2: APPENDIX 3: QUESTIONNAIRE DESIGN FOR DEVELOPMENT OF AHP AND FAHP MODEL FOR MSSP 134 CONSTRUCTION OF PAIR-WISE COMPARISON MATRIX FOR AHP MODEL 146 FUZZY PAIR-WISE COMPARISON MATRIX FOR FAHP MODEL IN MSSP 149

4 x CHAPTER NO. TITLE PAGE NO. APPENDIX 4: APPENDIX 5: QUESTIONNAIRE DESIGN FOR FUZZY TOPSIS AND FUZZY VIKOR MODEL FOR MSSP 152 PAIR-WISE COMPARISON MATRIX AND RELATIVE WEIGHTS OF ALTERNATIVES FOR AHP-TOPSIS-LP MODEL FOR MSSP 155 REFERENCES 156 LIST OF PUBLICATIONS 173 VITAE 175

5 xi LIST OF TABLES TABLE NO. TITLE PAGE NO. 2.1 Scale of preference between two elements Average Random Consistency Index (RCI) based on matrix size Review on applications of AHP procedure ( ) Review on applications of AHP procedure ( ) Application of AHP procedure in MSS Identified criteria for MSS Pair-wise comparison matrix for main criteria of AHP Consistency ratio for the pair-wise comparison matrix of AHP Relative Weight and Global Weight of evaluation criteria of AHP Weights of criteria, subcriteria and four maintenance alternatives using AHP Membership function of fuzzy number for FAHP Fuzzy evaluation matrix with respect to goal of FAHP Weights of criteria, sub criteria and four maintenance alternatives using FEAHP approach 53

6 xii TABLE NO. TITLE PAGE NO. 3.9 Pair-wise comparison matrix of Training Required criterion for FAHP Consistency ratio for the pair-wise comparison matrix of FAHP Weights of criteria, subcriteria and four maintenance alternatives using FAHP (Eigen vector) approach Ranking of maintenance strategies using AHP and FAHP model Sensitivity analysis results on FAHP model Identified evaluation criteria and maintenance alternatives for TOPSIS models Decision matrix of maintenance alternatives for TOPSIS Normalized decision matrix using TOPSIS Weighted normalized decision matrix using TOPSIS Separation of ideal and negative ideal solution of alternatives using TOPSIS Relative Closeness to the ideal solution using TOPSIS Linguistic variables and corresponding fuzzy number for fuzzy TOPSIS Linguistic variables for ratings of fuzzy TOPSIS Qualitative assessment of criteria weight from decision-makers for fuzzy TOPSIS Ratings of the alternatives by decision-makers under various criteria for TOPSIS Fuzzy decision matrix and fuzzy weights of four alternatives using fuzzy TOPSIS 83

7 xiii TABLE NO. TITLE PAGE NO Normalized fuzzy decision matrix using fuzzy TOPSIS Weighted normalized fuzzy decision matrix using fuzzy TOPSIS Distance between A i (i = 1,2,...) and A + with respect to each criterion Distance between A i (i = 1,2,...) and A with respect to each criterion Computation of d + i, d i and CC i Sensitivity analysis results of fuzzy TOPSIS model Results obtained with FAHP Decision matrix of maintenance alternatives for VIKOR Normalized decision matrix using VIKOR Utility measure and regret measure for each maintenance alternatives VIKOR index for maintenance alternatives Ranking order of S, R and Q for all maintenance alternatives Important weights of criteria judged by three decision-makers for fuzzy VIKOR Rating of alternatives under each criterion for fuzzy VIKOR Aggregate fuzzy weights of criteria using fuzzy VIKOR Weighted normalized fuzzy decision matrix of fuzzy VIKOR 109

8 xiv TABLE NO. TITLE PAGE NO Fuzzy best value and fuzzy worst value Si and 5.13 ~ * S, S ~ ~ *, R, R ~ R i values of maintenance strategy alternatives values of maintenance 110 strategy alternatives Rating of Q i and rank of each alternatives Acceptable stability in decision making of fuzzy VIKOR Sensitivity analysis results of fuzzy VIKOR model for MSS Bearing changes observed for first production cycle (24 cycles) Bearing changes observed for second production cycle (28 cycles) Occurrences of breakdown per annum Inferences of proposed model 133

9 xv LIST OF FIGURES FIGURE NO. TITLE PAGE NO. 1.1 Scheme of proposed research Functions of a typical maintenance system Survey on maintenance management General architecture of the hierarchy Objective space of the two criteria Proposed AHP model for MSS Typical hierarchy structure for the proposed AHP Hierarchy for MSS model Proposed FAHP model for MSS Membership functions of triangular fuzzy numbers for FAHP Subcriteria weights of AHP and FAHP Variations of performance values for different conditions through sensitivity analysis Evaluation framework of proposed FAHP-TOPSIS for MSS Decision hierarchy for MSS using TOPSIS model Steps of the proposed fuzzy TOPSIS model for MSS Snapshot of spreadsheet for fuzzy TOPSIS Fuzzy triangular membership functions for corresponding linguistic variables in fuzzy TOPSIS model 78

10 xvi FIGURE NO. TITLE PAGE NO. 4.6 Fuzzy triangular membership functions for importance of maintenance alternatives in fuzzy TOPSIS model Closeness coefficients of maintenance alternatives through sensitivity analysis Evaluation framework of proposed FAHP-VIKOR for MSS Steps of the proposed fuzzy VIKOR method Snapshot of spreadsheet for fuzzy VIKOR VIKOR indexes of maintenance alternatives through sensitivity analysis Proposed AHP-TOPSIS integrated with LP model for MSS Main screen of the proposed CAMCDMT software Snapshot of input for criterion in CAMCDMT Comparison matrix of maintenance strategy for each one of the criteria developed in CAMCDMT Snapshot of integrated model in CAMCDMT Hierarchical structure of MSSP for AHP-TOPSIS-LP Number of main criteria for the evaluation in CAMCDMT Maintenance alternatives for the selection process in CAMCDMT Screenshot of the relative weights of main criteria in CAMCDMT Snapshot of the relative weights of maintenance alternatives with respect to feasibility in CAMCDMT 124

11 xvii FIGURE NO. TITLE PAGE NO Snapshot of the ideal and negative ideal solutions of maintenance alternatives in CAMCDMT Snapshot of relative closeness of maintenance alternatives in CAMCDMT Snapshot of Excel Solver for AHP-TOPSIS-LP model 129

12 xviii LIST OF SYMBOLS AND ABBREVIATIONS SYMBOLS min R i - A minimum individual regret of the opponent A i - Alternatives f i * - Best value C i - Criterion h + - Ideal Solution h - Negative Ideal Solution w - Non-fuzzy number rij - Normalized fuzzy decision matrix r ij - Normalized value a ij - Rating of the i th maintenance strategy on deducting R i - Regret measure changes in the j th criterion using suitable measure CC j - Relative closeness coefficients SC i - Sub criterion D j +, D j - The distance between the performance scores of alternatives with respect to all criteria min S i - The maximum group utility R - The normalized fuzzy decision matrix x ij - The numerical score of alternative j on criterion i a ( x) - Triangular fuzzy numbers with membership function V i - Triangular number S i - Utility measure Q i - Vikor index

13 xix Wj - Weight v - Weighted normalized fuzzy decision matrix ij v ij - Weighted normalized value f i - Worst value ABBREVIATIONS AHP - Analytic Hierarchy Process BDC - Break Down Cost BNP - Best Nonfuzzy Performance BSC - Balanced Score Card CAMCDMT - Computer Aided MCDM Tool CH - Choking CBM - Condition-Based Maintenance CC - Closeness Coefficient CF - Component Failure CI - Consistency Index CMMS - Computerized Maintenance Management Systems CR - Consistency Ratio DI - Difficulty in Implementation DSS - Decision Support System DT - Difficulty in Training EC - Environmental Conditions ECM - Effectiveness Centered Maintenance EH - Ease of Handling FAHP - Fuzzy Analytic Hierarchy Process FBV - Fuzzy Best Value FNIS - Fuzzy Negative Ideal Solution FPIS - Fuzzy Positive Ideal Solution

14 xx FWV - Fuzzy Worst Value HU - Higher Utilization ILP - Integer Linear Programming IS - Improper Sequence JIT - Just In Time KL - Knowledge of Labor LP - Linear Programming MAIC - Materially per Apparecchiature de Impiraiti Chemiei MCDM - Multi Criteria Decision Making MG - Medium Good MH - Medium High MILP - Mixed Integer Linear Programming MIS - Maintenance Information System ML - Medium Low MP - Medium Poor MSS - Maintenance Strategy Selection MSSP - Maintenance Strategy Selection Problem MTBF - Mean Time Between Failure MTTR - Mean Time To Repair PC - Production Capacity PM - Predictive Maintenance PROMETHEE - Preference Ranking Method for Enrichment Evaluation PVM - Preventive Maintenance QFD - Quality Function Deployment RBM - Risk-Based Maintenance RCM - Reliability-Centered Maintenance SC - Spare part Cost SMM - Strategic Maintenance Management TBM - Time-Based Maintenance

15 xxi TMM - Total Maintenance Management TOPSIS - Technique for Order Preference by Similarity to Ideal Solution TPA - Ton Per Annum TPH - Ton Per Hour TPM - Total-Productive Maintenance TQM - Total Quality Management TR - Training Required VBM - Vibration-Based Maintenance VG - Very Good VH - Very High VIKOR - VlseKriterijumska Optimizacija I Kompromisno Resenje VL - Very Low VP - Very Poor