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TABLE OF CONTENT
Abstrak i
Abstract ii
Dedication iii
Acknowledgement iv
Table of Content v
List of Table ix
List of Figures x
List Abbreviations, Symbols, and Nomenclature xii
1. INTRODUCTION 1
1.1 Background of the study
1 1.2
Problem Statement 3
1.3 Objectives
4 1.4
Scope of the study 5
1.5 Structure of Project
5
2. LITERATURE REVIEW 7
2.1 Manufacturing system
7 2.2
Machine configuration 8
2.2.1 Series configuration 9
2.2.2 Parallel configuration 10
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2.2.3 Combination of Series and Parallel 11
2.2.4 Complex System 12
2.3 Definition of reliability
12 2.4
Purposes of system reliability 15
2.5 Lifetime distribution
16 2.5.1 Exponential distribution
17 2.5.2 Weibull distribution
17 2.5.3 Normal distribution
18 2.6
Failure Analysis 19
2.6.1 Failure mode and effect analysis FMEA 20
2.6.2 Fault tree analysis FTA 20
3. METHODOLOGY 22
3.1 Flow chart of conducting the PSM I and PSM II
22 3.2
Phase 1 24
3.2.1 Define the problem statement 24
3.2.2 Establish Objective and scope 25
3.2.3 Literature review on related topic 25
3.2.4 Identify the system and method 25
3.3 Phase 2
26 3.3.1 Data Collection
26 3.3.2 Assess the distribution and evaluate the system
27 3.3.3 Analysis of result
27 3.3.4 Discussion
27
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3.3.5 Conclusion and Recommendation 28
3.4 Methodology the objective of the study
28 3.4.1 Methodology for objective 1
28 3.4.1.1 Data Collection
29 3.4.1.2 Plot the distribution by Minitab software
30 3.4.1.3 Statistical data analysis
30 3.4.1.4 Make prediction on each robots’ lifetime
32 3.4.1.5 Measure and analyze the reliability system configuration
32 3.4.2 Methodology for objective 2
32 3.4.2.1 Classified the failure mode into individual failure modes
33 3.4.2.2 Identify the most critical individual failure mode
34 3.4.3 Methodology for objective 3
34 3.4.3.1 Further study regarding to avoid the failure
35 3.4.3.2 Make corrective action
35
4. RESULT AND DISCUSSION 36
4.1 Data of the time to failure
36 4.1.1 Historical data of welding robot 1
37 4.1.2 Historical data of welding robot 2
38 4.2
Choice of Distribution Model 39
4.2.1 Probability plot for time to failure 39
4.2.2 Distribution ID Plot 41
4.3 Parametric Distribution Analysis
42 4.4
Characteristic of distribution 47
4.4.1 Survival Plot for time to failure 49
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4.4.2 Survival Probabilities of Normal distribution 50
4.4.3 Statistical term 50
4.4.3.1 Reliability of each welding robot 51
4.4.3.2 Reliability of the system 52
4.5 The Parametric Distribution Analysis with multiple failure modes 53
4.5.1 Individual failure mode of welding robot 1 55
4.5.2 Probability plot of the individual failure modes 59
4.5.3 Table survival probabilities of individual failure mode 60
4.5.4 Interpretation of processing failure mode 62
5. CONCLUSION 65
