PR3501 Engineering Metrology Syllabus:
PR3501 Engineering Metrology Syllabus – Anna University Regulation 2021
COURSE OBJECTIVES:
To understand the concept of engineering metrology.
To familiarize the metrology instruments used for linear and angular measurements.
To learn about the surface texture and measuring instruments.
To learn about the metrology of screw threads and gears.
To introduce the concepts of Laser and computer applications in metrology.
UNIT – I FUNDAMENTALS OF MEASUREMENT
Definition of Engineering metrology – Line, end and wave length standards of measurement – Errors in measurements – Limits, fits, tolerance and gauge design – Inter changeability and selective assembly – Accuracy, precision and Calibration of instruments – Light interference and interferometry – Measurement of absolute length using interferometers.
UNIT – II LINEAR AND ANGULAR MEASURING SYSTEMS
Linear and Angular measuring systems. Slip gauges, micrometers, verniers, dial gauges and surface plates – Concept of comparators mechanical, electrical, optical and pneumatic comparators – Angular measuring systems – angle gauges – Sine bar – Precision spirit level, Autocollimators – Angle dekkor – Clinometers – Straightness and flatness measurement using precision level and auto collimators.
UNIT – III MEASUREMENT OF SURFACE TEXTURE AND MEASURING INSTRUMENTS
Surface texture – Definitions – types of surface texture – surface texture measurement methods – Comparison – Profilometer – Surface texture measuring instruments – Measurement of run-out and concentricity straightness, flatness and alignment errors – Tool makers microscope – Optical and Laser Alignment telescope – Metroscope.
UNIT – IV METROLOGY OF SCREW THREADS AND GEARS
Metrology of screw threads and gears Internal and external screw threads – terminology – measurement of various elements of screw threads – thread micrometer two wire and three wire -methods, gear terminology – measurement of various elements of gears – pitch circle method, constant chord method, base tangent method – plug method – Rolling gear tester.
UNIT – V LASER METROLOGY AND COMPUTER AIDED METROLOGY
Co-ordinate measuring machines – Probe sensors – Errors – Environmental factors – Laser micrometer – Laser interferometer – Testing of geometric features of machine tools using laser – interferometer – non contact and in-process inspection using laser – machine tool metrology – vision systems – Atomic force microscope – Scanning tunneling microscope.
TOTAL: 45 PERIODS
COURSE OUTCOMES
Upon successful completion of the course, students should be able to:
CO1: Understand the principles of Engineering Metrology.
CO2: Identify appropriate metrology equipment for measuring linear and angular measurements.
CO3: Apply the suitable equipment to measure the surface textures.
CO4: Identify appropriate methodology to measure the parameters of screw threads and gears.
CO5: Employ the advanced metrology equipments.
TEXT BOOKS:
1. Jain. R. K., “Engineering Metrology”, Khanna Publishers, 2021.
2. Raghavendra N. V. and Krishnamurthy. L, “Engineering Metrology and Measurements”, Oxford University Press, 2013.
3. Rajput R.K., “Engineering Metrology and Instrumentation”, 5thedition, Kataria and Sons Publishers, 2013.
REFERENCES:
1. Gupta. I. C., “A Text book of Engineering Metrology”, 7th edition, Dhanpat Rai and Sons, 2012.
2. Gayler G. N. and Shotbolt C. R., “Metrology for Engineers”, 5th edition, ELBS, 2000.
3. “ASTME Hand book of Industrial Metrology”, Prentice Hall of India Limited, 2002.