2:09 PM G + '%AC K/S EXPERIMENTAL PROCEDURE: Set up the as described and position the deflection gauge at about three quarters of the length of the specimen, measured from the fixed end. Accurately measure the distance L before applying any load. Apply a load of (say) 0.2kg to the load hanger and record the deflection obtained. Increase the load by increments of 0.2kg up to the maximum available (depending on the strength of the shaft) each time recording total value of 0. Tabulate the results as below. Effective length of shaft L-m M form e. the n Diameter of shaft D-m sses i Radius of torsion pulley a-m d the Load Mass M Kg Torque T-Mga Angular Deflection 0 Nm rad RESULTS: Plot a graph of torque T vertically against angular deflection 0 The graph should be a straight line of slope GJ Where J- 32 Measure the slope of the straight part of the graph ignoring any initial vibrations. Hence determine the value of G. G = (slope) x Compare the value obtained for G with typical values for the material obtained from data books or other reference works. Comment on any discrepancy, suggesting reasons for its origin. Comment also on the shape of the graph and the information it provides on torsion theory. = ||| о U accele id its btain id sa ccele ating orqu Nm 7 Mo t Ine 2:09 PM G 1 2 3 5 6 24 + '&AC UNIVERSITY OF ABUJA FACULTY OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING COURSE: STRENGTH OF MATERIALS TOPIC: TORSION APPARATUS LABORATORY PRACTICAL 1 form the res sses in d the ir resul OBJECTIVE: To observe the relationship between torque and angular deflection of a specimen subject to torsional loading and to determine the modulus of the rigidity of the shaft material. APPARATUS: Torsion Apparatus m in ( acceler id its btaine THEORY: The following assumptions are made when considering the shaft subject to pure torque as shown. id saf R Shear Strain EXPERIMENTAL PROCEDURE: Set up the as described and position the deflection gauge at about three quarters of the length of the specimen, measured from the fixed end. Accurately measure the distance L. before applying any load. Apply a load of (say) 0.2kg to the load hanger and record the deflection obtained. Increase the load by increments of 0.2kg up to the maximum available (depending on the strength of the shaft) each time recording total value of 0. Tabulate the results as below. Effective length of shaft L-m ||| = O כ Մ ccel ating orqu Nm form M

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Help me with this practical on torsion apparatus
2:09 PM
G
+ '%AC
K/S
EXPERIMENTAL PROCEDURE:
Set up the as described and position the deflection gauge at about three quarters of
the length of the specimen, measured from the fixed end. Accurately measure the
distance L before applying any load. Apply a load of (say) 0.2kg to the load hanger
and record the deflection obtained. Increase the load by increments of 0.2kg up to
the maximum available (depending on the strength of the shaft) each time recording
total value of 0. Tabulate the results as below.
Effective length of shaft L-m
M
form
e.
the n
Diameter of shaft
D-m
sses i
Radius of torsion pulley a-m
d the
Load Mass M
Kg
Torque T-Mga
Angular Deflection 0
Nm
rad
RESULTS:
Plot a graph of torque T vertically against angular deflection 0
The graph should be a straight line of slope
GJ
Where J-
32
Measure the slope of the straight part of the graph ignoring any initial vibrations.
Hence determine the value of G.
G = (slope) x
Compare the value obtained for G with typical values for the material obtained
from data books or other reference works. Comment on any discrepancy, suggesting
reasons for its origin. Comment also on the shape of the graph and the information
it provides on torsion theory.
=
|||
о
U
accele
id its
btain
id sa
ccele
ating
orqu
Nm
7
Mo
t
Ine
Transcribed Image Text:2:09 PM G + '%AC K/S EXPERIMENTAL PROCEDURE: Set up the as described and position the deflection gauge at about three quarters of the length of the specimen, measured from the fixed end. Accurately measure the distance L before applying any load. Apply a load of (say) 0.2kg to the load hanger and record the deflection obtained. Increase the load by increments of 0.2kg up to the maximum available (depending on the strength of the shaft) each time recording total value of 0. Tabulate the results as below. Effective length of shaft L-m M form e. the n Diameter of shaft D-m sses i Radius of torsion pulley a-m d the Load Mass M Kg Torque T-Mga Angular Deflection 0 Nm rad RESULTS: Plot a graph of torque T vertically against angular deflection 0 The graph should be a straight line of slope GJ Where J- 32 Measure the slope of the straight part of the graph ignoring any initial vibrations. Hence determine the value of G. G = (slope) x Compare the value obtained for G with typical values for the material obtained from data books or other reference works. Comment on any discrepancy, suggesting reasons for its origin. Comment also on the shape of the graph and the information it provides on torsion theory. = ||| о U accele id its btain id sa ccele ating orqu Nm 7 Mo t Ine
2:09 PM G
1
2
3
5
6
24
+ '&AC
UNIVERSITY OF ABUJA
FACULTY OF ENGINEERING
DEPARTMENT OF MECHANICAL ENGINEERING
COURSE: STRENGTH OF MATERIALS
TOPIC:
TORSION APPARATUS
LABORATORY PRACTICAL 1
form
the res
sses in
d the
ir resul
OBJECTIVE: To observe the relationship between torque and angular deflection
of a specimen subject to torsional loading and to determine the modulus of the
rigidity of the shaft material.
APPARATUS: Torsion Apparatus
m in (
acceler
id its
btaine
THEORY:
The following assumptions are made when considering the shaft
subject to pure torque as shown.
id saf
R
Shear Strain
EXPERIMENTAL PROCEDURE:
Set up the as described and position the deflection gauge at about three quarters of
the length of the specimen, measured from the fixed end. Accurately measure the
distance L. before applying any load. Apply a load of (say) 0.2kg to the load hanger
and record the deflection obtained. Increase the load by increments of 0.2kg up to
the maximum available (depending on the strength of the shaft) each time recording
total value of 0. Tabulate the results as below.
Effective length of shaft L-m
|||
=
O
כ
Մ
ccel
ating
orqu
Nm
form
M
Transcribed Image Text:2:09 PM G 1 2 3 5 6 24 + '&AC UNIVERSITY OF ABUJA FACULTY OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING COURSE: STRENGTH OF MATERIALS TOPIC: TORSION APPARATUS LABORATORY PRACTICAL 1 form the res sses in d the ir resul OBJECTIVE: To observe the relationship between torque and angular deflection of a specimen subject to torsional loading and to determine the modulus of the rigidity of the shaft material. APPARATUS: Torsion Apparatus m in ( acceler id its btaine THEORY: The following assumptions are made when considering the shaft subject to pure torque as shown. id saf R Shear Strain EXPERIMENTAL PROCEDURE: Set up the as described and position the deflection gauge at about three quarters of the length of the specimen, measured from the fixed end. Accurately measure the distance L. before applying any load. Apply a load of (say) 0.2kg to the load hanger and record the deflection obtained. Increase the load by increments of 0.2kg up to the maximum available (depending on the strength of the shaft) each time recording total value of 0. Tabulate the results as below. Effective length of shaft L-m ||| = O כ Մ ccel ating orqu Nm form M
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