PR8501 - ENGINEERING METROLOGY AND MEASUREMENTS (Syllabus) 2017-regulation Anna University

PR8501 - ENGINEERING METROLOGY AND MEASUREMENTS (Syllabus) 2017-regulation Anna University

PR8501

ENGINEERING METROLOGY AND MEASUREMENTS

 LPTC

3003

OBJECTIVES:
• To understand the basic principles of measurements
• To learn about various methods of measuring Mechanical parameters

UNIT I

CONCEPT OF MEASUREMENT

9

General concept – Generalised measurement system-Units and standards-measuring instruments: sensitivity, stability, range, accuracy and precision-static and dynamic response-repeatability- systematic and random errors-correction, calibration - Introduction to Dimensional and Geometric Toleranceing – interchangeability.

UNIT II

LINEAR AND ANGULAR MEASUREMENT

9

Definition of metrology-Linear measuring instruments: Vernier, micrometer, Slip gauges and classification, - Tool Makers Microscope - interferometery, optical flats, - Comparators: limit gauges Mechanical, pneumatic and electrical comparators, applications. Angular measurements: -Sine bar, Sine center, bevel protractor and angle Decker..


UNIT III

FORM MEASUREMENT

9

Measurement of screw threads: Thread gauges, floating carriage micrometer measurement of gear tooth thickness: constant chord and base tangent method-Gleason gear testing machine – radius measurements-surface finish: equipment and parameters, straightness, flatness and roundness measurements.

UNIT IV

LASER AND ADVANCES IN METROLOGY

9

Precision instruments based on laser-Principles- laser interferometer-application in measurements and machine tool metrology- Coordinate measuring machine (CMM): need, construction, types, applications.- computer aided inspection.

UNIT V

MEASUREMENT OF MECHANICAL PARAMETERS

9

Force, torque, power:-mechanical, pneumatic, hydraulic and electrical type-Pressure measurement - Flow: Venturi, orifice, rotameter, pitot tube –Temperature: bimetallic strip, thermocouples, pyrometer, electrical resistance thermistor

TOTAL : 45 PERIODS

OUTCOMES: Upon completion of this course the student will be able
• Define the basic concepts and terminology in measurements.
• Differentiate the principle, operation of linear and angular measuring instruments
• Mathematically define the method of form measurements of screw threads, surface roughness and basic feature form.
• Explain the applications of laser on dimensional measurements &computer aided inspection.
• Illustrate the working principles of different measuring instruments for measuring mechanical parameters

TEXT BOOKS:
1. Alan S. Morris, “The Essence of Measurement”, Prentice Hall of India, 1997
2. Jain R.K., “Engineering Metrology”, Khanna Publishers, 2009

REFERENCES:
1. Gupta S.C, “Engineering Metrology”, Dhanpat rai Publications, 2005
2. Jayal A.K, “Instrumentation and Mechanical Measurements”, Galgotia Publications 2000
3. Beckwith, Marangoni, Lienhard, “Mechanical Measurements”, Pearson Education, 2006.
4. Donald Deckman, “Industrial Instrumentation”, Wiley Eastern, 1985.

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