Introduction
An application oriented programme for industry, which aims to convey the latest thinking and best practice of machinery vibration monitoring and analysis via lectures and case studies. Industrial case study examples are used throughout the programme to emphasise key points and to underline the relevance and applicability of the topics being addressed.
The programme gives a detailed treatment of the detection, location and diagnosis of faults in rotating and reciprocating machinery, using vibration analysis.
Objectives
Participants attending the programme will:
- Have a detailed understanding of the measurement and characteristics of vibration signals, and the ways in which vibration data can be stored and represented.
- Have acquired a knowledge of vibration-based fault detection and diagnostic techniques, and the practical implementation of these techniques.
- Have the knowledge to assess accurately machinery conditions, and to make detailed and reliable diagnoses for a range of common machinery and component types.
Training Methodology
Participants will learn by active participation during the programme through the use of programme materials, software demonstrations, hands-on experience of vibration analysis software tools, group exercises, and discussions of “real life” case studies in their organisations.
Who Should Attend?
Participants attending the programme will:
- Have a detailed understanding of the measurement and characteristics of vibration signals, and the ways in which vibration data can be stored and represented.
- Have acquired a knowledge of vibration-based fault detection and diagnostic techniques, and the practical implementation of these techniques.
- Have the knowledge to assess accurately machinery conditions, and to make detailed and reliable diagnoses for a range of common machinery and component types.
Seminar Outline
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Vibration and its Measurement
- Components of a vibration signal
- Vibration transducers
- Overall and spectral vibration
- Monitoring point location
- Transducer mounting
- Common symptoms
- Time and frequency domains
- Frequency domain instrumentation
- Fast Fourier transforms
- Displacement and proximity probes
- Transducer selection
- Calibration, care and maintenance
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Vibration Based Fault Detection
- Vibration level classification
- ISO standards
- Peak and RMS levels
- Dynamic range
- Use of FFT analysers
- Constant percentage bandwidth spectra
- Automated CPB spectrum comparison
- Spectral zoom
- Case studies
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Vibration Based Fault Diagnosis
- Time domain averaging
- Crest factor
- Sampling, digitising and aliasing
- Frequency and phase response
- Band selectable analysis
- RMS and linear averaging
- Real time bandwidth and dynamic range
- Case studie
Vibration Symptoms of Common Machine Faults
- Looseness issues
- Signal distortion
- Harmonic content
- Inter-harmonics
- Static and dynamic balancing of rigid rotors
- Types of imbalance
- Measurement set-ups
- Single and two-plane balance procedures
- Misalignment
- Distinction between angular and lateral effects
- Case studies
Fundamentals of Bearing and Gear Vibration
- Calculation of bearing frequencies
- Pulse trains and line spectra
- Loaded element modulation
- Trending fault development
- Gear wear
- Toothmesh harmonics
- Ghost components
- Gear fatigue
- Modulation effects
- Bent shafts and gear misalignment
- Case studies
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