Amm Course File

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COURSE FILE

SUBJECT:

Automotive MechanicalMeasurement

(Sub.Code:170204)

NAME OF FACULTY:

TWINKLE PANCHAL

YEAR : 2014

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Term Pla!"

A#l!a$!" U!%er&!$': ()*ara$ Te+,-l-"!+al U!%er&!$'

S$ar$!" .a$e -/ $,e $erm: 0202014

E.!" .a$e -/ $,e $erm: 2112014

T-$al N-3 -/ .a'& a%a!lale: 115

T-$al -3 -/ ,-l!.a'& .e+lare. ' U!%er&!$': 5

T-$al -3 -/ ,-l!.a'& .e+lare. ' I&$!$)$e: 5

A+$)al .a'& a%a!lale: 50

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I.)&$r!al 8!&!$& - Sa$)r.a'&: Ye&

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A+$)al Plae. 7a'&: 100

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S)*e+$: AUTOMOTI8E MECHANICAL

MEASUREMENTS)*e+$ C-.e: 10204

For Fourth ear Automobile !n"ineerin" Students

Lear!" O*e+$!%e&:

1. Stud# o$ various standard o$ measurement2. Stud# o$ di%erent t#&es o$ instrument $or di%erent 'uantit#

Subject Content

1Introduction :

Need of measurement, International standards of length - Line and end measurement, sligauges. Precision & accuracy of measurements. Possible errors and Sources of errors i

measurement.

2Tolerances and Gauging:

Unilateral and bilateral tolerances, Limits, Fits. ypes of Fits. Importance of limits. System

follo!ed in mass production. Limit gauges used for plain and taper !or"s. Specifications olimits as per IS #Indian Standards$.

3Magnification :

Principles and characteristics of measuring instruments, %echanical, ptical, 'lectrical an

Pneumatic. %ethods of magnification. (ifferent types of )ernier calipers, %icrometers, (i

gauges, %echanical and pneumatic types of comparators. Use of comparators in inspection.

4Straightness and Flatness:

Straight edge, use of le*el beam comparator, autocollimator testing of flatness of surface plat

5Surface Finish:

ypes of te+tures obtained during machine operation, range of .L.. *alue in differen

operations in numerical assessment of surface finish #.I.S. Specifications of .L.. *alue$sample length of different machining operations, (irection of lay, te+ture, symbol

instruments used in surface finish assessment.

Introduction

Need of %echanical %easurement. %easurement methods, /enerali0ed measurement system

and its functional elements. Instrument characteristics1 static, dynamic and analytictreatment, calibration, lassification and *arious types of transducers. 2 oordinate measurin

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machine

!

Measure"ent of #ngles$ Ta%er and &adius:

e*el Protractor, Spirit le*el, linometers, angle (ec"er, standard balls and rollers for anglmeasurement, angle slip gauges, and radius measurement of circular portion, measurement o

conca*e and con*e+ surface radius.

Measure"ent of Threads:

(ifferent errors in scre! threads, measurement of forms of thread !ith profile pro3ector, pitcmeasurement, measurement of thread diameter !ith standard !ire, scre! thread micrometer.

Measure"ent of S%ur Gears:

4un out chec"ing, Pitch measurement, profile chec"ing, bac"lash chec"ing, tooth thic"nesmeasurement, alignment chec"ing, errors in gears, chec"ing of composite errors.

'Measure"ent of Te"%erature:

Importance, Principle and types of temperature measurement, hermometer, hermocoupl

calibration, 4(, hermister, measurement of lo! temperature. %easurement of coolatemp, engine oil temp, e+haust gas temp, cabin temp.

Measure"ent of (ressure and )acuu":

Importance of pressure and *acuum measurement, range of high pressure and *acuum. yp

of pressure measuring instruments - ourdon tubes, (ead !eight pressure gauge teste

(iaphragm gauge, L)(, Pie0o electrical pressure gauge, lo! *acuum gauges-%cLeogauge. %easurement of tmospheric pressure, e+haust gas pressure, air pressure in reser*o

tan"s of ir ra"e system and hydraulic bra"ing system, coolant pressure, fuel deli*er

pressure and engine oil pressure.

*Measure"ent of #ngular S%eed:

Importance of angular speed measurement, mechanical tachometers, 'lectrical tachometer

(rag cup, acho generator, Inducti*e, capaciti*e and photo electric pic" up. ontact type &Non ontac type achometer.

Measure"ent of Flo+:

Importance of flo! measurement for oolant, Lubrication il & Fuel, 5ater meter, 4otmeter, /as flo! meter, 6ot !ire anemometer, drag press flo! meter #analytical treatment$.

Measure"ent of Strain:

lassification of strain gauges, principle and types of electrical strain gauges, gauge factoanalysis of !hetstone7s net!or" using strain gauges, mounting, application to measure 8 load

force, tor:ue. Usage of or:ue !rench.

1,Measure"ent of )ibration and Sound:

Importance of *ibration measurement, classification of *ibration measuring instrument

accelerometer, importance of acoustical measurement, sound pressure and po!er le*els, typeof microphones - capaciti*e, crystal, electrodynamics, carbon, sound le*el meter. 6arshne

measurement.

-ther Measure"ents:

hermal conducti*ity gauge, Pitot gauge, Ioni0ation gauge, ran" position, am position.

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11Calibration:

Process, %andatory re:uirements of alibration, ertification, *alidity of certificate.

Te;$ B--6:1. !n"". Metrolo"# b# ..*ain+ hanna ,ublishers+ -elhi.2. Mechanical Measurements and Control b# -.S.umar+ Metro&olitan

boos.

Re/ere+e B--6&:1. /et oo o$ !n"". Metrolo"# b# .C. 3u&ta+ -han&at ai Sons+

5e6 -elhi.2. Mechanical Measurement nstrumentation b# ..a&ut+S..ataria Sons.

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;Lecture


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;?Lecture


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gauge, lo! *acuum gauges-%cLeod gauge. %easurement of

tmospheric pressure, e+haust gas pressure, air pressure in

reser*oir tan"s of ir ra"e system and hydraulic bra"ing system,'+ C Pressure measurement


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hermal conducti*ity gauge, Pitot gauge,

Lecture >= Ioni0ation gauge, ran" position, am position.

'+ utorial 2


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Fl)!. Me+,a!+& 9 La-ra$-r' Pra+$!+al& l!&$:

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1. P4'ISIN %'SU4IN/ INS4U%'NS

2. LIN'4 %'SU4'%'N

3 N/UL4 %'SU4'%'N

4 %I4%''4 LI4IN

5. SU4F' 4U/6N'SS %'SU4'%'N

6. /'4 6 6IDN'SS %'SU4'%'N

7. P4'SSU4' %'SU4'%'N

8. '%P'4U4' %'SU4'%'N

9. FL5 %'SU4'%'N

10. S4IN /U/' 4NS(U'4


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Amm Course File