Tuesday, April 10, 2012 - Friday, April 13, 2012

AVA Training Course

All Day Event

This course is recommended for individuals with five or more years' experience who want to learn additional analytical techniques with dual-channel FFT and computer analysis. It is recommended that you participate in this course or the Rotor Dynamics (RD) course in addition to the Advanced Vibration Control (AVC) course. All Vibration Institute instructors are Category IV certified and experienced vibration analysts. Course Instructors are subject to change without prior notification.

ADVANCED VIBRATION ANALYSIS (AVA)

Signal Processing, Dual-Channel, FFT, and Vibration Control

All registered attendees in the Advanced Vibration Analysis training course are provided class notes on signal processing, dual-channel analysis, and vibration control. A workbook containing problems and exercises for use during the class is also included.  Workshops are scheduled to illustrate theory and applications.

This course provides preparation for solving difficult vibration problems.  It is recommended that attendees participate in this course or the Rotor Dynamics (RD) course in addition to the Advanced Vibration Control (AVC) course as partial preparation for the certification examination for Vibration Analyst Category IV. 

DAY ONE

• Signal Processing
• RMS, coherent and non-coherent signals, peak detection, vector addition, filters, signal-to-signal noise ratio, and FFT calculations
• Signal/Noise Demonstration
• Workshop I: Signal Processing
• Introduction to the FFT
• A/D converters, dynamic range, FFT batch process, buffer fill times, averaging and overlap
• Workshop II: FFT Basics and Filters
• FFT Topics
• Aliasing, windows, resolution, and demonstrations
• Workshop III: Aliasing, Windows, and Resolution

DAY TWO

• FFT Accuracy
• Side-lobe areas; accuracy of rectangular, Hanning, and flat-top windows, window resolution; order spectra; correction of amplitude and frequency from bin location
• Workshop IV: Window Function and Order Spectra
• Beats and Modulation
• Time domain of digitized signals, beats, AM and FM modulation, suppressed carrier signals and enveloping, case histories
• Workshop V: Beats and Modulation
• Time Series Averaging
• Frequency synthesizers, averaging one signal and noise, averaging two signals, effect of synchronous time averaging on bearing defects and modulation,  digital filers and the FFT as a brick wall filter, case histories of synchronous timer averaging
• Workshop VI: Time Series Averaging

DAY THREE

• Dual-Channel Basics
• Test methods, transfer functions, coherence, mass/spring model, real and imaginary
• displays, Nyquist and Bodé plots, basic mode shapes, and operating deflection shapes
• Workshop VII: Dual-Channel Analysis
• Damping Measurement and Calculation
• Half-power, real or imaginary plots, slope of phase shift, log decrement, dB decay of waterfall data, and demonstrations
• Workshop VIII: Damping Measurement

DAY FOUR

• Modal Testing
• Testing, analysis, natural frequencies, damping, and modes
• Structural Measurements
• Vertical pumps, machine supports, floors, phase leads, turbine blades and fans, axial resonance on motors with sleeve bearings
• Workshop IX: Modal Testing
• Training Examination on Course Content (3 hours)

Upon receipt of your registration you will receive a confirmation letter with additional information regarding your specific training course. 

All Vibration Institute instructors are Category IV certified and experienced vibration analysts.  Course Instructors are subject to change without prior notification.
  

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