JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Outcomes

At the end of the course the students will be able to

• To study the vibrations in machine elements and how to control them.
• Ability to analyze the mathematical model of linear vibratory system to determine its response
• Obtain linear mathematical models of real life engineering systems
• Determine vibratory responses of single and multi degree of freedom systems to harmonic, periodic and non-periodic excitation

UNIT - I

Causes and effects of vibration, Vibration of single Degree and Multi Degree of freedom systems. Steady state and transient characteristics of Vibration.

UNIT - II

Introduction to Condition Monitoring, Failures types, investigation and occurrences. Causes of failure, Characteristics of vibration ~SHM, Periodic motion, Displacement, Velocity and acceleration. Peak to peak & RMS, Linear and logarithmic scales and phase angle.

UNIT - III

Vibration measuring instruments, vibration transducers, signal conditioning elements. Display and recording elements. Vibration meters and analyzers.

UNIT - IV

Condition monitoring through vibration analysis. Frequency analysis, Filters, Vibration signature of active systems, vibration limits and standards. Contaminant analysis, SOAP and other contaminant monitoring techniques,

UNIT - V

Special vibration measuring techniques Change in sound method, Ultrasonic measurement method, Shock pulse measurement, Kurtosis, Acoustic emission monitoring, Cepstrum analysis, Modal analysis, critical speed analysis, shaft -orbit & position analysis.

Text Books:

• 1. Mechanical Fault Diagnosis and Condition Monitoring/ Collacott. R.A./ Chapman & Hall, London, 1982
• 2. Vibration Measurement and Analysis/ Nakra. B. C. Yadava, G. S. and Thuested .L./ National Productivity Council, New Delhi, 1989.

REFERENCES:

• 1. Theory of vibrations with applications by W.T. Thompson, Pearson publications.
• 2. Mechanical Vibrations by SS Rao, PHI Publications R19 M.Tech. Design & Mfg./Design for Mfg. M. TECH. I Year II Sem. (DESIGN FOR MANUFACTURING/ DESIGN AND MANUFACTURING)