JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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..

REFERENCES:

• 1. Mechanical Fault Diagnosis and Condition Monitoring/ Collacott. R.A./ Chapman & Hall, London, 1982,
• 2. Introduction to Machinery Analysis and Monitoring/ John S. Mitchell/ Perm Well Books, Perm Well Publishing Company, Tulsa, Oklahoma,1993,
• 3. Vibration Measurement and Analysis/ Nakra. B.C .Yadava, G.S. and Thuested .L./ National Productivity Council, New Delhi, 1989. M. Tech – I year II Sem. (Design for Manufacturing) MANUFACTURING SIMULATION & PRECISION ENGINEERING LAB A. MANUFACTURING SIMULATION The students will be given training on the use and application of the following software to manufacturing problems:
• 1. Auto MOD Software.
• 2. PROMODEL
• 3. SLAM-II
• 4. CAFIMS
• 5. Flexsim They also learn how to write sub routines in C-language and interlinking with the above packages. Problems for modelling and simulation experiments:
• 1. AGV planning
• 2. ASRS simulation and performance evaluation
• 3. Machines, AGVs and AS/RS integrated problems
• 4. JIT system
• 5. Kanban flow
• 6. Material handling systems
• 7. M.R.P. Problems
• 8. Shop floor scheduling etc. B. PRECISION ENGINEERING
• 1. Hydraulic and Pneumatic circuits
• 2. Closed loop control systems
• 3. Study of the chip formation in turning process
• 4. Study of operation of tool and cutter grinder, twist drill grinder, Centreless grinder
• 5. Determination of cutting forces in turning
• 6. Experiments in unconventional manufacturing processes-AJM and study of USM, EDM, Laser Machining and Plasma spraying
• 7. Inspection of parts using tool makers microscope, roughness and form tester
• 8. Study of micro-controllers, programming on various CNC machine tools and also controllers
• 9. Studies on PLC programming
• 10. Study and programming of robots
• 11. Condition monitoring in machining process using acoustic emission.