Short Course


Vibration Specialist Levels 1 and 2

The Vibration Institute of India, Bangalore, conducted Vibration Level 1 and II courses, each for four days duration from January 9-12 and 13-17, 2017 respectively to Coastal Gujarat Power Limited, (A Tata Power Company) Engineers in Mundra, Gujarat, as follows.

Vibration Level 1:

1. MACHINES OF 20th CENTURY

The origins two millennia ago to de Laval Nozzle of 1882; Power Plants, Gas Turbines and Aircraft Engines, Space Launch Vehicles, Torpedoes and their failures.

2. BASIC VIBRATION PHYSICS

Maintenance of machinery through condition assessment and vibration’s role, Basic motion, Period, frequency, Amplitude (Peak, peal-to-peak, RMS), Parameters (Displacement, velocity, acceleration), Units, unit conversions, Time and frequency domains, Phase, Natural frequency, resonance, critical speeds, Force, response, damping, stiffness

3. SENSORS TO INSTRUMENTS OF MACHINE VIBRATION

Vibration Transducers, Sensor mounting, Mounted natural frequency, Hands on experience, Acceptance tests for sensors

4. BASIC SIGNAL PROCESSING PROCEDURE

Time Domain to Frequency Domain

5. CONDITION MONITORING

General faults; Simple fault recognition such as unbalance, Basic maintenance action; towards scientific maintenance of machinery.


Vibration Level 2:

1. PRINCIPLES OF VIBRATION – MODAL ANALYSIS

Multi Degrees of Freedom System and Modal Analysis, Macro and Micro Damping

2. ROTATING MACHINE DYNAMICS

Rotor Dynamics, Jeffcott Model, Unbalance and Balancing, Bowed rotors, Supports, Seals, Gyroscopics, Oil Whirl, Forward and Backward Whirl, Misalignment, Internal Damping and Looseness, Asymmetric rotors, gravity critical, Cracked rotors

3. CONDITION MONITORING - FAULT CONDITION RECOGNITION

General fault recognition

4. DIAGNOSTICS ON LINE AND CORRECTIVE ACTION

Specific examples

17 engineers registered for the Level 1 course; 14 engineers registered for the Level 2 course. All of them successfully took the certification examinations conducted by The Vibration Institute of India and certified Level I and Level 2 specialists.

The courses were organized by Innovative Engineering Designs and Simulation (IEDS) Global Solutions, Bangalore and instructed by Prof. J. S. Rao, CEO, IEDS and also President of The Vibration Institute of India, Bangalore.The registrants were given the notes containing 575 slides for both the courses.


Vibration Levels 3 and 4 are scheduled for April 2017:

Vibration Level 3:

1. Recap on Basic Vibrations and Nonlinear Vibrations

2. Natural Frequencies and Mode Shapes of Blades, Discs, Rotors (FEM)

3. Excitation Forces from Fluids and stage interference (FVM)

4. Alternating Stresses leading to fatigue and failure

5. Recap on Data Acquisition and Signal Processing

6. Review on Condition Monitoring; Instabilities, Shaft Bow, Bearing (Rolling Element, Journal) Defects, Electric Motor Defects, Flow Induced Vibration, Aerodynamics and Liquids, Gearbox Defects; Condition Monitoring on Line

7. Introduction to Lifing and Prognostics

 

Vibration Level 4:

1. Basics of Lifing Methodology for Failure

2. High Cycle Fatigue of Blades, Discs, Stationary Parts; Stress Based Life Estimation

3. Locally Plastic and Globally Elastic Structures, Low Cycle Fatigue; Strain Based Life Estimation from Stress and Strain Concentration (Neuber’s law) in Blade Root Dovetails, Francis Turbine Runners etc.

4. Physical Failure of Power Plant Components, Fracture Initiation, Propagation and Final Unstable Fracture from Griffith’s Criterion

5. Prediction of Life and Remaining Life Calculations

6. Prognostics from Steady State and Sudden Loads (Generator Short Circuit Conditions) and Development Codes for Prognostics


Attachments:(click and download)

TVII Courses.docx   TVII Courses.pdf

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