SEMINARS related to Vibration Analysis offered by Technical Associates of Charlotte

Advanced Vibration Diagnostic and Reduction Techniques
 

Fee for Advanced Vibration Diagnostic and Reduction Techniques: $1895

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

    

ADVANCED VIBRATION DIAGNOSTIC AND REDUCTION TECHNIQUES

This 5-day seminar teaches Diagnostic Techniques on Complex Machine Types (450-page section) and is intended for analysts having 4 to 8 years or more of vibration experience.

Drawings and discussions are provided on what makes each machine type unique and a section is included on the problems particularly specific to each machine type.

Several case histories are provided for each machine type. Machines currently covered include vertical centrifugal pumps, centrifugal air compressors, rotary screw air compressors, rotary blowers (roots-type blowers), piping vibration problems, paper machines, turbine/generators, machine tools, multistage gearboxes, DC motors, and AC induction motors.

In-depth Operating Deflection Shape Analysis using computer-generated animated displays is reviewed, and a comparison is made between Operating Deflection and true Experimental Modal Analysis, pointing out the distinct difference and the value of both techniques.

Demonstrations are provided on Acquisition of Frequency Response Functions (FRF’s); Measurement and significance of Coherence; and Recommended Modal Excitation Techniques.

Advanced Time Waveform Analysis applications are reviewed, pointing out (1) the problems detectable by time waveform analysis, but likely missed by spectral analysis only; and (2) the problems for which time waveform analysis adds confirming evidence to spectral analysis as well as a better evaluation of problem severity.

In-depth information on Vibration Isolation and Damping Treatments is also given, along with case histories illustrating how these treatments have been successfully implemented.


ADVANCED AGENDA

Introduction and Course Overview

Brief Review of "ANALYSIS III" Seminar Topics:
  • Review of Technical Associates' "Illustrated Vibration Diagnostic Wall Chart"
  • Specification of Meaningful Narrowband Spectral Envelope Alarms
  • Use of High Frequency Demodulated Spectra
  • Motor Current Spectral Analysis on Induction Motors and use of a "Motor Current Severity Chart"
  • How to Analyze Low-Speed Machines
  • How to Analyze High-Speed Machines
  • How to Analyze Variable-Speed Machines
In-depth Synchronous Time Averaging Applications:
  • Definition & How and Why it Works
  • Instrumentation and Transducers Required
  • Benefits of Synchronous Time Averaging
  • How Synchronous Time Averaging Greatly Enhances Time Waveform Analysis
  • Case Histories Using Synchronous Time Averaging
In-depth Time Waveform Analysis Applications:
  • Definition of the Total Time Waveform
  • Items Present in Time Waveforms Which are Not Apparent in FFT Spectra
  • Problems Detectable by Time Waveform Analysis, But Likely Missed Altogether by Spectral Analysis Alone
  • Problems for Which Time Waveform Analysis Adds Confirming Evidence to Spectral Analysis
Analog and Computerized Order Tracking Instrumentation and Techniques:
  • Definition of Order Tracking
  • Why Order Tracking is Needed in Certain Situations on Certain Machines
  • Instruments, Transducers and/or Software Required for Order Tracking
  • How Order Tracking Works With Tracking Adaptors
  • How Computerized Order Tracking Works
  • Case Histories Using Order Tracking
How to Evaluate Single and Multi-stage Gearboxes:
  • Review of Common Gear Types & Terminology
  • Analysis of Gears Following Their Failure
  • Anticipated Problem Sources and Corresponding Vibration Frequencies Which will be Generated
  • Required Instruments, Transducers, Locations, Frequency Spans & Time Waveform Setups
  • Case Histories of Gearbox Problems
In-depth Natural Frequency Testing Methods & Instruments:
  • Difference Between Natural Frequency, Resonance & Critical Speed
  • Identifying Characteristics of Natural Frequency Problems Which Help "Give Them Away"
  • Impulse Natural Frequency Tests
  • Runup and Coastdown Natural Frequency Tests
  • Bode' Plot Acquisition & Interpretation
  • Polar Plot Acquisition & Interpretation
  • Variable-Frequency Shaker Natural Frequency Tests
  • Case Histories Confirming Resonance Problems
Correction of Resonance Vibration Problems:
  • Correction of System Related Resonance Problems
  • Correction of Rotor Related Resonance Problems
  • Case Histories on Correction of Resonance Problems
Review of Operating Deflection Shape Analysis:
  • Definition of Operating Deflection Shape Analysis (ODS)
  • Instrument & Transducer Requirements for ODS
  • How ODS Has Helped Detect Problems Which Might Have Otherwise Have Gone Unnoticed
  • Real-World Case Histories Using ODS

Introduction to Experimental Modal Analysis:

  • Definition of Experimental Modal Analysis
  • Terminology of Modal Analysis
  • Instrument, Transducer & Software Requirements for Modal Analysis
  • How Modal Analysis Differs from Operating Deflection Shape Analysis (ODS)
  • General Modal Analysis Test Methods
  • What will Modal Analysis Tell You about the Machine and/or Structure Tested?
In-depth Vibration Isolation Treatments:
  • Definition of Vibration Isolation and How it Differs from Vibration Damping
  • Types of Vibration Isolators & How They Function
  • Solution of Real-world Problems Using Isolation Treatments
In-depth Vibration Damping Treatments:
  • Definition of Vibration Damping
  • How Damping Affects Resonant Vibration
  • Types of Damping Treatments Available and How They are Influenced by
  • Temperature & Frequencies
  • Solution of Real-World Problems Using Damping Treatments
Dynamic Vibration Absorbers Used to Reduce Resonant Vibration:
  • What They Are & When They are Effective
  • How to Design a Dynamic Vibration Absorber
  • Example Applications of Dynamic Vibration Absorbers
Acceptance Testing and Criteria for New or Overhauled Machinery:
  • Why and When Acceptance Tests are Needed
  • Recommended Procedures for Conducting Acceptance Tests
  • Recommended Spectral Alarm Bands for New or Overhauled Machinery
  • Recommended Mounting Methods and Loading When Conducting Acceptance Tests
  • Presentation of Sample Machinery Acceptance Specifications
Vibration Analysis of Special Machine Types (Including Both Theory & Case Histories for Each Type):
  • Horizontal Centrifugal Pumps
  • Vertical Pumps
  • High-Speed Centrifugal Air Compressors
  • Rotary Screw Air Compressors
  • Centrifugal Chillers
  • Rotary Screw Air Compressors
  • Centrifugal Fans
  • Rotary Blowers ("Roots Type")
  • Piping Vibration Problems
  • Chemical Reactors & Agitators
    • Paper Machines
    • Turbine/Generators
    • DC Motors and Controls
    • AC Induction Motors
    • Machine Tools
    • Presentation of Case Histories for Each Machine Type
Prerequisites

Students should have 4 to 8 years vibration spectrum analysis experience. Prior experience with natural frequency testing, phase analysis, time waveform analysis, synchronous time averaging, plus exposure to operating deflection shape analysis is recommended in order to allow the student to become proficient with the application of the complete arsenal of advanced vibration diagnostic & reduction techniques covered in-depth within this 5-day seminar.


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