مشروع تخرج بعنوان Fault Detection Using Vibration Analysis

مشروع تخرج بعنوان
BS.c Project In
Fault Detection Using Vibration Analysis
Supervised by
DR. Fawkia Ramadan Gomaa
Project Team
Ahmed Abd Elsattar Abd Elaziz Deabs
Mustafa Ibrahem Ibrahem Afify
Mohammed Mustafa Abd-Elazeem Helal
Emad El-Din Mohsen Fahmy El-Hoty
Mustafa Ismaeel Mustafa Kandeel
CHAPTER 1: Machinery Fault Diagnosis
1.1Introduction. 2
1.2 Fault Detection Techniques 2
1.3 Failure Modes Detected by Vibration Analysis 6
1.4 Troubleshooting Chart. 31
1.5 Faults Detection Acceptance. 33
1.6 Fault Diagnostics. 38
1.7 Advanced Fault Diagnostic Techniques. 38
CHAPTER 2: SYSTEM DESIGN
2.1 System Component. 40
2.2 Electric Motor 40
2.3 Flange Coupling between Motor and Gearbox. 40
2.4 Gearbox. 43
2.5 Coupling between Gearbox and Shaft. 44
2.6 Design of the Shaft. 45
2.7 Bearing Design. 48
2.8 The Assembled System 53
CHAPTER 3: ANALYTICAL MODAL ANALYSIS
3.1 Introduction 56
3.2 Applications of Modal Analysis 57
3.3 Frequency Response Function. 60
3.4 Graphical Display of FRF 61
3.5 Modal Analysis of MDoF System 67
3.5.1 Modal Analysis of MDoF Shaft without Crack. 67
3.5.2 Modal Analysis of MDoF Cracked Shaft 71
CHAPTER 4: EXPERIMENTAL MODAL ANALYSIS
4.1 Introduction 77
4.2 Experimental Modal Analysis Techniques. 78
4.2.1 Classical Modal Analysis. 78
4.2.2 Operational Modal Analysis. 78
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4.3 Operating Deflection Shapes. 81
4.4 Order Analysis 82
4.5 Measurement Parameters 84
4.6 Vibration Data Types. 85
4.7 Vibration Data Formats. 88
4.8 Data Acquisition 90
4.8.1 Vibration Transducer. 90
4.8.2 Data Measurements 92
4.8.3 Transducer Mounting Techniques. 93
4.9 Vibration Analyzers. 94
4.10 Vibration Analysis Techniques 95
4.10.1 Trending Analysis 95
4.10.2 Comparative Analysis 96
4.10.3 Signature Analysis. 97
4.11 Lab Results. 99
4.11.1 Spectrum analysis of free crack shaft and cracked shaft 106
4.11.2 Spectrum analysis of good coupling and with misalignment 111
4.11.3 Classical Modal Analysis of Free crack shaft 114
4.11.4 Classical modal analysis of cracked shaft. 120
4.11.5 Order analysis of free crack shaft 125
4.11.6 Order Analysis of cracked shaft 128
4.12 Discussion of Results 131
CHAPTER 5: COMPUTER TECHNIQUES IN VIBRATIONS USING ANSYS
5.1 Introduction to ANSYS Program 135
5.2 Modal Analysis of Shaft. 135
5.3 Modal analysis of Cracked Shaft 146
5.4 Modal and Harmonic Analysis of Cantilever Beam 153
5.4.1 Harmonic Analysis of Cantilever Beam. 153
5.4.2 Harmonic Analysis of Cantilever Beam. 160
Conclusion. 165
References. 166
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