ISO Vibration Analysis CAT III is a five-day course, the training is intended for people who are confident with spectrum analysis but wish to push on and learn more about signal processing, time waveform and phase analysis, cross-channel testing, machine dynamics, and fault correction.
What you'll learn
- You will learn to diagnose all of the common fault conditions with rolling element and sleeve bearing machines, utilizing spectra, high-frequency detection techniques, time waveforms, phase readings, and other techniques to diagnose faults.
- You will also learn machine dynamics (natural frequencies, resonance, etc.), how to perform resonance testing, and how to correct resonance problems. The course also covers the single and cross-channel measurement capabilities of your analyzer.
- After completing the CAT-III course, you will be able to set up and run a successful vibration program and mentor the junior analysts.
Features
- Become an Advanced Vibration Analyst
- Understanding Rotor Dynamics
- Understanding Natural Frequencies, Resonance, ODS, Modal analysis and intro to FEA
- Journal Bearing Analysis
- Machinery Corrective Actions.
Target Audience
- Have a minimum of 3 years of experience
- Have a senior role in the condition monitoring team
- Have others report to them to verify diagnoses
- Be responsible for the most complex fault conditions (with the possible exception of sleeve bearing, flexible rotor machines)
- Need to perform complex tests to validate fault conditions (e.g., resonance) and find a solution
- Want to be a leader of the vibration team or take a leading role in diagnosing faults and making repair recommendations
- Want to understand all data collector options, special test capabilities, all analysis tools and understand the widest range of fault conditions
- Seek to become certified to international standards (ISO-18436) by an accredited certification body
- Want to understand all condition monitoring technologies, how and when to apply them
- Want to understand machine dynamics (natural frequencies, resonance, ODS), how to perform resonance testing and how to correct resonance problems
- Use the training and certification as the next step in a rewarding career as a vibration analyst
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Filters: Low pass, band pass, high pass, band stop
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Sampling, aliasing, dynamic range
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Signal-to-noise ratio
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Resolution, Fmax, data collection time
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Averaging: linear, overlap, peak hold, time synchronous
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Windowing and leakage
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Order tracking
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Cross-channel measurements
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Correlation and coherence
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Collecting data – ensuring you have the correct setup
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When should you use time waveform analysis?
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Diagnosing unbalance, misalignment, bent shaft, eccentricity, cocked bearing, resonance, looseness, and other conditions Phase analysis
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Bubble diagrams
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Diagnosing unbalance, misalignment, bent shaft, eccentricity, cocked bearing, resonance, looseness, and other conditions
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Natural frequencies and resonances
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Mass, stiffness, and damping
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SDOF and MDOF
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Run-up coast down tests
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Bode plots and Nyquist (polar) plots
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Impact and bump tests Operating Deflection Shape (ODS) analysis
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Can we prove the existence of a natural frequency?
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Visualizing vibration
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Setting up the job
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Collecting phase readings correctly
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Interpreting the deflection shape
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Using Motion Amplification
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How does modal analysis differ from ODS?
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How does Finite Element Analysis (FEA) differ from modal analysis
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A quick review of the modal testing process Correcting resonances
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The effect of mass and stiffness
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Beware of nodal points
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Adding damping
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A ‘trial and error’ approach
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A ‘scientific’ approach
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Isolation
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Tuned absorbers and tuned mass dampers
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Why do bearings fail?
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Cocked bearing, sliding on the shaft or inside the housing, looseness
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EDM and DC motors and VFDs
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Bearing frequencies and what to do when you don’t have all the details
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The four stages of bearing degradation
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Ultrasound
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High-frequency detection techniques
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Shock Pulse, Spike Energy, Peak Vue, and other techniques
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Demodulation/enveloping
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Selecting the correct filter settings
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Spectrum analysis
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Time waveform analysis
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Low-speed bearings Journal bearing fault detection
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What are journal bearings?
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Measuring displacement
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Introduction to orbit plots
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Using your analyzer to acquire orbit plots
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Introduction to centerline diagrams
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Eccentricity ratio
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Glitch removal
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How the orbit changes with pre-load, unbalance, misalignment, instabilities, oil whir and whip
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How do motors work?
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Diagnosing a range of fault conditions: eccentric rotor, eccentric stator, soft foot, phasing, broken rotor bars, rotor bar, and stator slot pass frequencies
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Motor current analysis
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Unique fault conditions
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Flow turbulence, recirculation, cavitation
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Spectrum analysis versus time waveform analysis
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Wear particle analysis
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Gearmesh, gear assembly phase frequency (and common factors)
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Tooth load, broken teeth, gear eccentricity and misalignment, backlash and more
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General maintenance repair activities
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Review of the balancing process and ISO balance grades
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Review of shaft alignment procedures
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Defining the program
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Setting baselines
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Setting alarms: band, envelope/mask, statistical
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Setting goals and expectations (avoiding common problems)
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Report generation
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Reporting success stories
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Acceptance testing
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Review of ISO standards
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