A. MECHANICAL VIBRATIONS:
Scope of vibration, Harmonic Vibration, Degree of freedom, onr dimensional longitudinal, transverse and torsional vibrations with and without damping; Free and forced vibrations. Vibration Isolation and Transmissibility: Force Transmissibility, Transmissibility of motion. System with two degrees of freedom; Dynamic vibration Absorber; Many degrees of freedom systems; Torsional vibration of a multi rotor system
Vibrations of continous systems; flexural vibrations of beams. Approximate methods; Rayleigh, Rayleigh-Ritz Stodola, Dunkerley's and Holer's method. Critical speeds or whirling speeds of shafts; calculation of dynamic stresses. Electrical Analogy'; Analog circuits for mechanical systems and vice versa.
Vibration Measurements; Vibration pickups, accelerometers; inductance and capacitance type pick ups, piezoelectric pick ups; exciters, vibration meter, Vibration analyser; fault detection from vibration, Diagnostic Maintenance.
B. NOISE ENGG.:
Introduction and Fundamental of sound waves, Acoustics, subjective response-human ear, Audible frequency range, Loudness Noise harmful effects, Vibrations as the major cause of noise. Decibles. Determination of the noise level by simple calculations. Noise Pollution Noise induced threshold shift, Noise standards, Recommmended Noise levels.
Machinery Noise, Reduction of Noise. Reduction of noise and it's control, Design for less noise, Enclosures, Silencers, barriers etc. Noise control in idustry. Noise Mathematics. Addition of Sound levels. Calculation of SPL.
Noise Measurements: The range of quantities encountered in Sound, Decibel scale. Frequency / locatie bands. Microphones, Sounds Level Meter, Frequency analysers, fault detection from noise analysis, Diagnostic Maintenence. Measurement. Measurement environment, Anechoic chamber.
 

REFERENCE BOOKS:

1. Mechanical Vibrations; G.K.Grover, Nemi Chand & Bros., Roorkee

2. Vibration Theory & Applications; W.T.Thomson

3. Vibration & Noise for Engineers; K.K.Purja, Dhanpat Rai & Sons, Delhi

4. Theory & Problems of Mechanical Vibrations; W.W.Seto, Schaum's Outline Series, McGraw Hill International Editions

5. Mechanical Vibrations,.........Den Hartog

6. Vibration Problems in Engineering, ........ Timshenko