Mechanical Measurement

Course Code

Course Title

L

P

U

ME224T

MECHANICAL MESUREMENTS

3

0

3

 

Course Objectives & Course outcomes:

 

Course Objectives: The course focuses on imparting the principles of measurement which includes the working mechanism of various sensors and devices that are in use to measure the important physical variables of various mechatronic systems.

Course outcomes: After undergoing the course the student can select appropriate device for the measurement of parameters like temperature, pressure, speed, stress, humidity, flow velocity etc., and justify its use through characteristics and performance

Text book(s):

T1: Mechanical Measurements and Instrumentation:  Er. R. K. Rajput:  S. K. Kataria & Sons.

Reference book(s):

R1: Mechanical Measurement:  R. K. Jain:  Khanna Publishers.  

R2: Instrumentation and Control Systems: S. Bhaskar, Anuradha Publications.

R3: Control System Engineering: Nagrath and Gopal:  New Age Publishers.

R4: Instrumentation and Mechanical Measurements / A.K. Tayal / Galgotia Publications

Lecture-wise Plan

Lecture No’s

Learning Objective

Topics to be Covered

Reference Tex.Books/Ref. Books)

1-5

Introduction

Basic principles of measurement – Measurement systems, generalized configuration and functional descriptions of measuring instruments – examples. Dynamic performance characteristics – sources of error, Classification and elimination of error

T1: Ch.5

6-9

Measurement of Displacement

Theory  and  construction  of  various  transducers  to  measure displacement – Piezo electric, Inductive, capacitance, resistance,  ionization  and  Photo electric transducers, Calibration procedures.

T1: Ch.10

10-13

Measurement of Temperature

Classification – Ranges – Various Principles of measurement – Expansion, Electrical Resistance – Thermistor – Thermocouple – Pyrometers – Temperature Indicators.

T1:Ch:Ch.9

14-17

Measurement of Pressure

Units – classification – different principles used. Manometers, piston, Bourdon pressure gauges, Bellows-Diaphragm gauges. Low pressure measurement-Thermal conductivity gauges-Ionization pressure gauges, Mcleod pressure gauge.

T1:Ch.8

18-21

Measurement of Level

Direct method-Indirect methods-Capacitative, Utrasonic, Magnetic, Cryogenic fuel level indicators- Bubler level indicators.

R24.1-24.14

22-25

Flow Measurement

Rotameter, Magnetic, Ultrasonic, Turbine flow meter, Hot-wire anemometer, Laser Doppler Anemometer (LDA)

T1:Ch.8

26-29

Measurement of Speed

Mechanical Tachometer-Electrical tachometers, Stroboscope, Noncontact type of tachometer

R15.1-15.20

30-32

Measurement of Acceleration and Vibration

Difference simple instruments-Principles of Seismic instruments-Vibrometer and accelerometer using this Principle.

T1:Ch.10

33-36

Stress Strain Measurements

Various types of stress and strain measurements- electrical strain gauge- gauge factor- method of usage of resistance strain gauge for bending compressive and tensile strains usage for measuring torque, Strain gauge Rosettes.

T1:Ch.11

37-40

Measurement of Humidity

Moisture content of gases, sling Psychrometer, Absorption Psychrometer, Dew point meter

R19.1-19.10

41-45

Measurement of Force, Torque and Power

Elastic force meters, load cells, Torsion meters, Dynamometers.

R10.1-10.12, R11.1-11.08 R12.1-12.08

 

 

 

 

 

 

 

Evaluation Scheme:

 

Component

Duration

Weightage (%)

Remarks

Internal  I

50 mins.

25

Closed Book

Mid Term Exam

2 hrs.

20

Closed Book

Internal II

50 mins.

25

Closed Book

Comprehensive Exam

3 hrs.

30

Closed Book

 

1.       Attendance Policy: A Student must normally maintain a minimum of 75% attendance in the course without which he/she shall be disqualified from appearing in the respective examination.

2.       Make-up Policy: A student, who misses any component of evaluation for genuine reasons, must immediately approach the instructor with a request for make-up examination stating reasons. The decision of the instructor in all matters of make-up shall be final.

3.       Chamber Consultation Hours: During the Chamber Consultation Hours, the students can consult the respective faculty in his/her chamber without prior appointment.