كتاب The Vibration Analysis Handbook

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The Vibration Analysis Handbook - (Malestrom)
First Edition
Second Printing

ويتناول الموضوعات الأتية :

Theory of Vibration
Harmonic Motion
Periodic Motion
Random Motion
The Relationship between Time and Frequency
Time
Frequency
Amplitude Measurement
Sources of Frequencies
Generated Frequencies
Excited Frequencies
Frequencies Caused by Electronic Phenomena
ForcingFunction
Combinations of Machine Problems
Mixing Frequencies
Electrical and Mechanical Relationship
Time and Frequency Domain
Relationship between Velocity Displacement and Acceleration
Units of Measurement
Relationships
Ways of Measuring Vibration
Relation between Diameter Speed and RPM
How To Determine Machine Speed in FPM from the Vibration Data
Conclusion and Efficiencies
CHAPTER TWO: TIME AND FREQUENCY ANALYSIS TECHNIQUES
Introduction
Basicphysics
Single Frequency
Single Frequency with Harmonics
Clipping
SquareWave
Natural Frequencies
Multiple Frequencies Linear Systems
High Frequency Riding a Low Frequency
Multiple Frequencies Nonlinear Systems
AmplitudeModulation
Sum and Difference Frequencies
Pulses
FrequencyModulation
Conclusion
Hardware
Introduction
Personal Computer
Real-time Analyzer
Datacollection
Printers
Transducers
Displacement Transducers
Velocity Transducers
Accelerometers
Pressure Transducers
Microphones
Once-Per-Revolution Markers
Multiplexer
Gauss Meter
Software
Introduction
Group Toolbox Software
Signal Analysis Program
Vibration Calculation Program
Resonance and Deflection Calculator (RADC)
Bearing Calculation Program
Gears Program
Roll Ratio Program and Rusch Chart
Group Machine Doctor (MACHDOC)
MACHDOC
Polar Plot
Time Plot
Balancing
Diagnostic Database
Diagnostic Modules
Roll Quality Assurance Program
Group
Group
CHAPTER FOUR: ACCURATE EVALUATION OF MACHINERY CONDITION
Introduction
Theory
Calibration
Frequencies Generated
Datacollection
Transducer Selection
Continuous Monitoring
CommonProblems
Bentshaft
SoftFoot
Misalignment
Looseness
Bearings Loose on the Shaft
Bearings Loose in the Housing
Common Forms of Looseness
Noise
Diagnosis of Looseness
Resonance
Rubs
Problems That Cause Pulses
OilWhirl
Analysis of Electric Motors
Motors Out-of-Magnetic Center
Broken Rotor Bars
Turn-To-Turn Shorts in Windings
Vibration Problems in Synchronous Motors
SirenEffect
Solo Data on Motors
Steam Turbines
Pumps
Impeller Contact
Starvation
Cavitation
Compressors
Fans
Special Tests
Startup/Coast Down Data
Bump Tests
Noise Recording
Synchronous Time Averaging (STA)
Relative Motion Measurements (RMM)
CHAPTER FIVE: ACCURATE DIAGNOSIS OF ANTIFRICTION BEARINGS
Introduction
Datacollection
Transducer Selection
Generated Frequencies
Fundamental Train Frequency
Ball Pass Frequency of Outer Race
Ball Pass Frequency of Inner Race
Ball Spin Frequency
Application of the Bearing Formulas
Outer Race Analysis
Inner Race Analysis
Ball Spin Frequency Analysis
Fundamental Train Frequency Analysis
VCI Bearing Calculation Program
Bearing Defects
Raceways
Outer Race
InnerRace
Outer and Inner Race Amplitude
Modulation of Ball Pass Frequency
Rolling Elements Balls and Rollers
Cage
Multiple Defects
Progressive Bearing Failure
Defectseverity
Bearing Behavior
Inner Race Defect Length
Defect Length Calculation
Deep Fatigue Spalls vs Shallow Flaking
Problem Sources
Acid Etching
Fluting
Inadequate Lubrication
Looseness
Bearings That Have Excessive Internal Clearance
Bearings That are Turning on the Shaft
Bearings Loose in the Housing
Testing for Bearing Frequencies
Conclusion
CHAPTER SIX: ACCURATE EVALUATION OF GEARS
Introduction
Data Acquisition
How To Take Data
Transducer Selection
Gear Vibration Theory
Evaluation of Gear Ratios
Factoring
Gearmesh Frequency
Fractional Gearmesh Frequency
Hunting Tooth Frequency
Planetary Gears
Digression
End Digression
Gear Life Expectancy
Amplitude Modulation
The Gears Program
The AGMA Quality Number System
Gear Problems and Causes
Eccentric Gears
Meshing Gears That Have a Common Factor and One
Gear Is Eccentric
Gears That Do Not Have a Common Factor and One
or Both Gears Are Eccentric
Gears That Are Out-of-Round or Have Several High Places
Gears Installed on a Bent Shaft
Loose and Worn Gears
Misaligned Gears
Backlash Problems or Oscillating Gears
Broken Cracked or Chipped Teeth
Conclusion
CHAPTER SEVEN: ANALYZING AND SOLVING PRESS ROLL AND NIP PROBLEMS
Introduction
Vibration Theory of Rolls In Nip
Hardware
Software
Synchronous Time Averaging
Hardware Setup
Dynamic Measurement of Rolls
Problems Associated with Rolls In Nip
Eccentric Rolls
Improper Ratios of Roll Sizes
Resonant Frequencies
Installation of Improperly Ground Rolls
Diagnosing Problems
Data Collection and Analysis of Overall Vibration Data
Relative Motion between Rolls
Conclusions and Recommendations
References
AppendixA
AppendixB
Glossary
Index

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@احمد الصعيدى كتب:: جزاك الله خيرا

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@ahmed22 كتب:: جزاكم الله خير يا بشمهندس

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كيفية التسجيل فى منتدى هندسة الإنتاج والتصميم الميكانيكى

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