SEMINARS related to Vibration Analysis offered by Technical Associates of Charlotte

Analysis II
 

Fee for Analysis II: $1495
 


Optional Vibration Analyst II Certification Testing is available at a cost of $250 on the last day.

    


Add a Pocket Vibration Diagnostic Handbook for $49.
Delivered to you at the Seminar.
 
    

ANALYSIS II - CONCENTRATED VIBRATION SIGNATURE ANALYSIS AND RELATED CONDITION MONITORING TECHNIQUES

This three day seminar builds from "ANALYSIS I" and is primarily intended to enhance the vibration expertise of analysts having approximately one to three years experience.

The curriculum allows the analysts to significantly improve the effectiveness of their condition monitoring programs.

Techniques are provided on how to detect each of 44 machine problems shown in our world renown "Illustrated Vibration Diagnostics Chart", along with numerous real-world case histories demonstrating how these problems have been detected and corrected (250 page Case History Section).

Diagnoses of more complex machine problems are taught including gear, rotor rub, journal bearing, electrical, hydraulic/aerodynamic, beat vibration, resonance and tracking of rolling element bearing "failure scenarios".

Refinement of Overall and Spectral Band Alarms using proven statistical techniques and real-world examples is explained. Important FFT Processing Techniques are covered including: window selection, averaging types, overlap processing, dynamic range, and the significance of bandwidth.

Introductory information is provided on how to: (1) specify meaningful Narrowband envelope alarms, (2) perform natural frequency tests; (3) analyze time waveforms; (4) use synchronous time averaging; (5) interpret amplitude demodulated spectra and waveforms; and (6) specify proper vibration isolation and damping treatments.


ANALYSIS II AGENDA
Introduction and Course Overview
Brief Review of "ANALYSIS I" Seminar Topics:
  • Vibration Fundamentals
  • Tabulation of Vibration Instruments Available
  • Tabulation of Vibration Transducers Available
  • Role of Spike Energy, Shock Pulse & HFD
  • Common Pitfalls in Everyday Vibration Measurements
Principles of Digital Data Acquisition and FFT Processing for Reliable Spectral Analysis:
  • FFT Parameters (#Lines, Resolution, Frequency Range)
  • Sampling & Digitizing Data
  • FFT Window Selection
  • Types of Averaging
  • Effect of Overlap Processing
  • Importance of Bandwidth & Frequency Separation
  • Difference in Digital and Analog Overall Level
  • Effect of Dynamic Range on Detection of Multiple Problems
Introduction to Natural Frequency Test Methods:
  • Difference Between Natural Frequency, Resonance and Critical Speed
  • Impulse Natural Frequency Testing
  • Runup and Coastdown Natural Frequency Testing
  • Bode' Plot Acquisition & Interpretation
  • Polar Plot Acquisition & Interpretation
Enhanced Vibration Diagnostics Using Phase Analysis:
  • Definition of Phase
  • Instruments and Transducers Required to Measure Phase Reliably And Accurately
  • How to Make Phase Measurements
  • Presentation of Standard Forms for Documenting Phase Measurements for Various Machine Types
  • How to Accurately Interpret Phase Measurement Results to Diagnose Various Problems
  • Using Phase to Find the Operating Deflection Shape of a Machine & its Supporting Structure
Concentrated Vibration Signature Analysis Using Technical Associates' World Renown "Illustrated Vibration Diagnostics Wall Chart":
Review of Problem Detection Covered in "ANALYSIS I" Seminar:
  • Mass Unbalance
  • Eccentric Rotors
  • Bent Shafts
  • Misalignment
  • Mechanical Looseness (3 Types)
  • Belt-Drive Problems
In-depth Coverage on How To Detect the Following Problems:
  • Resonance Problems
    • Characteristics Which Help Identify Possible Resonances from Survey Spectra.
    • How to Approximate Natural Frequencies for both Overhung and Simply Supported Rotors.
  • Tracking of Rolling Element Bearing Condition Using:
    • Newly Available High Frequency Demodulated and Enveloped Spectra.
    • Bearing & Structural Natural Frequencies.
    • Bearing Defect Frequencies & Sidebands.
    • Presentation of 6 Bearing Failure Scenarios.
    • When Should Bearings be Replaced?
  • Plain Bearing Problems
    Plain Bearing Wear & Clearance Problems
    Oil Whirl Instability
    Oil Whip Instability
    Dry Whip
  • Rotor Rub
    Partial Rub
    Full Annular Rub
  • Flow-Induced Vibration Problems
    Hydraulic/Aerodynamic Forces
    Cavitation and Starvation
    Recirculation & Flow Turbulence
    Surge and Choking
  • Gear Problems
    Gear Tooth wear
    Excessive Gear Tooth Loading
    Gear Eccentricity and/or Backlash
    Gear Tooth Misalignment
    Cracked or Broken Gear Teeth
    Fractional Gear Mesh Frequencies
    Hunting Tooth Problems
  • Electrical Problems With Induction Motors
    Stator Problems
    Eccentric Rotors (Variable Air Gap)
    Cracked, Broken or Loose Rotor Bars
    Thermally Induced Bow
    Electrical Phasing Problems
    Torque Pulse Problems
  • Beat Vibration Problems
  • Soft Foot/Distorted Frame Problems

How to Refine Both Overall and Spectral Band Alarms Using Proven Statistical Techniques:

  • Statistical Procedure Developed for Refining Overall and Spectral Band Alarms
  • Real-World Applications of the Above Procedure on Machinery at 4 Client Plants
Introduction To Narrowband Envelope Alarms:
  • Definition of Narrowband Envelope Alarms
  • Generating Envelope Alarms for a New Database
  • Generating Envelope Alarms for a Pre-existing Database
Introduction To High Frequency Demodulated & Enveloped Spectra:
  • What They Are and How They Are Generated
  • How They Are Used to Detect Bearing, Gear, Lubrication and Certain Electrical Problems
Introduction to Vibration Isolation Mechanisms:
  • Definition of Vibration Isolation
  • How Isolators Work
  • Sample Isolator Types
Introduction To Vibration Damping Treatments:
  • Definition of Vibration Damping
  • How Damping Affects Resonant Vibration
  • Sample Damping Treatments
Prerequisites

At least 1 to 2 years vibration spectrum analysis experience is recommended. General familiarity with using a calculator and with a computer is required. Good math skills and simple Algebra, primarily solving for one unknown, is a must. Some fundamental Trigonometry background will also prove helpful. If Vibration Specialist Certification is desired at Level II, a student must have previously passed a Level I Certification Test.

 

 


For more detailed information, please call Technical Associates of Charlotte, send us an email, or use our quick & convenient Online Request Form.
 
Call Technical Associates @ 704-333-9011

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