Metrology and Measurement (2142503)  

Syllabus

Sr. Topics Teaching Hours Module Weightage
1
Introduction to Measurements:

Generalized Measurement system, static & dynamic characteristics of instruments, types of measurement system , Instrumental error & its analysis, etc.

3
7 %
2
Measurement of Force, Torque and Strain:

Force measurement: load cells, cantilever beams, proving rings, differential transformers. Measurement of torque: Torsion bar dynamometer, servo controlled dynamometer, absorption dynamometers. Power Measurements. Measurement of strain: Mechanical strain gauges, electrical strain gauges, strain gauge: materials, gauge factors, theory of strain gauges and method of measurement, bridge arrangement, temperature compensation.

6
14 %
3
Displacement, Velocity/Speed, and Acceleration, Measurement:

Working principal of Resistive Potentiometer, Linear variable differential transducers, Electro Magnetic Transducers, Mechanical, Electrical and Photoelectric Tachometers, Piezoelectric Accelerometer, Seismic Accelerometer,

4
7 %
4
Temperature measurement:

Temperature Measuring Devices: Thermocouples, Resistance Temperature Detectors, Thermistor, Liquid in glass Thermometers, Pressure Thermometers, Pyrometer, Bimetallic strip. Calibration of temperature measuring devices, Numerical Examples on Flow Measurement.

4
12 %
5
Metrology:

Basics of Metrology, Need for Inspection, Accuracy and Precision, Objectives, Standards of measurements.

2
4 %
6
Linear and angular measurements:

Working principle , constriction , Measurement prouder, error and elimination, limitations and calibration of different linear and Angular measuring instruments.

7
15 %
7
Metrology of Gears and screw threads:

Gear tooth terminology, Sources of errors in manufacturing of gears, Measurement of tooth thickness: Gear tooth vernier, Constant chord method, Addendum comparator method and Base tangent method, Measurement of tooth profile: Tool maker’s microscope or projector, Involute tester, Measurement of pitch, Measurement of run out, Lead and Backlash checking. Measurement of concentricity, Alignment of gears. Screw Thread Measurement: Errors in threads, screw thread gauges, measurement of element of the external and internal threads, thread calliper gauges.

6
12 %
8
Metrology of Surface finish:

Surface Metrology Concepts and terminology, Analysis of surface traces, Specification of surface Texture characteristics, and Method of measuring surface finish: Stylus system of measurement, Stylus probe instruments, Wave length, frequency and cut off, other methods for measuring surface roughness: Pneumatic method, Light Interference microscopes, Mecrin Instruments.

6
12 %
9
Comparators:

Functional Requirements, Classification, Mechanical Comparators, Mechanical Optical Comparators, Electrical Comparators, Pneumatic Comparators.

3
7 %
10
Miscellaneous Metrology:

Precision Instrumentation based on Laser Principals, Coordinate measuring machines: Structure, Modes of Operation, Probe, Operation and applications. Optical Measuring Techniques: Tool Maker’s Microscope, Profile Projector, Optical Square. Basics of Optical Interference and Interferometry, Optoelectronic measurements,

4
10 %