STRAINGAUGE TRAINER TT-SGT
1
Table of Contents EXPERIMENT - 1 ...................................................................................................... 3 1.
OBJECTIVE:................................................................................................... 3
2.
THEORY........................................................................................................ 3
3.
DESCRIPTION:................................................................................................6
4.
APPARATUS REQUIRED..................................................................................7
5.
PROCEDURE.................................................................................................. 7
6.
OBSERVATION:...............................................................................................7
.
RESU!T ANA!YSIS:.........................................................................................7
".
CONC!USION:................................................................................................ 7
EXPERIMENT # 2...................................................................................................... 9 1.
OBJECTIVE:................................................................................................... 9
2.
APPSRATUS REQUIRED...................................................................................9
3.
PROCEDURE.................................................................................................. 9
4.
OBSERVATION:...............................................................................................9
5.
RESU!T ANA!YSIS:.........................................................................................9
6.
CONC!USION:................................................................................................ 9
.
PRECAUTIONS:.............................................................................................. 9
2
EXPERIMENT - 1
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4
Figure 2:S&,/ Strain Gauge>/ in a+Wheatstone A%%'/ R 1 R 2 R 3 R 9 &*+ /(+ ,,+(9 ,( &*+ $'&'& V $'& >/ + F+$. H$>+;+9 %*$'( &*+ %&,/ ,'+ + %&+&*+(9 /&% +%/%&,+ >/ /+,%+ %/*&) ,( ,'%+ V$'& &$ /+,%+ / &*+ $%/&/;+ (/+&/$. !/=+>/%+9 /0 &*+ %&,/ ,'+ /% $+%%+(9 /&% +%/%&,+ >/ + $>+ &*, &*+ $&*+ &*++ +%/%&$% / &*+ /(+9 ,( &*+ $'&'& ;$&,+ V $'& >/ + +,&/;+.
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6
3. DESCRIPTION: TO STUDY OPERATION OF STRAIN GAUGE T*+ &,/+ /% +,& 0$ +,%'++& $0 %&,/ &*$'* %&,/ ,&/+;+ /(+. T*+ =/& /% ;+) '%+0' 0$ %&'() $0 %&,/ ,&/+;+ /(+. T*+ =/& /% ;+) '%+0' 0$ %&'() $0 %&,/ &*$'* %&,/ ,&/+;+ /(+. A &*+ (/00++& &+%& $/&% ,+ $;/(+( $ &*+ &$ $;+ >/&* /;/ &*+/ *+,(/ &$ 0,//&,&+ &*+ %&'(+& &$ '(+%&,( >/&*$'& ,) $+,&/$ /%&'&/$ ) ,) &*/( +%$. +/*&
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CHARACTERISTICS O< STRAIN GAUGE USED IN !OAD CE!!: S/+ &*+ +%/%&,+ *,+% >/&* +%+& &$ $,( /% ;+) %,9 &*+ +00+&/;+ +&*$( /% &$ '%+ , *+,&%&$+ /(+. T*+ %&,/ ,'+ /% $'&+( / $,( + &$ 0$ , /(+. 718 + ,) %,) 12 V ( ,% $>+ %$'+ &$ &*+ $,( +. T*+ $'&'& $0 /(+ /% $'*& ,& Y+$> L G++ &+/,. 728 C$+& G++ &$ R+( L */&+ &$ B,= &+/, $0 &*+ D//&, M'&/+&+. 4. APPARATUS REQUIRED 1) S&,/ G,'+ 2) S&,/ G,'+ K/& 3) E&+, D//&, M'&/+&+ 5. PROCEDURE 1) C$+& &*+ ,/ ,+ &$ &*+ %') 723V AC8. 2) C$+& &*+ +&+, '&/+&+ +&>++ G++ L */&+ &+/, ,=+( ,% A L B +%+&/;+) $0 %&,/ G,'+ &,/+. 3) S+& &*+ '&/+&+ / V 7//;$& ,+8. 4) T' ON &*+ $>+ %>/&*. 5) !EAVE THE MODU!E ON /&* &*+ *+ $0 >+/*& $;/(+( >/&* &,/+. 7) M+,%'+ &*+ '&/+&+ +,(/ / // ;$&%. 6. OBSERVATION: S.N$. 1 2 3
S&,/ 78 5 1
O'&'& V$&,+ 7 V8 1. ,$. 1.2 ,$. 1.3 ,$. 7
4 5 6
15 2
1.4 ,$. 1.5 ,$.
. RESU!T ANA!YSIS:
P$& &*+ ,* +&>++ S&,/ ,( $'&'& ;$&,+ $0 %&,/ ,'+. ". CONC!USION:
C$+&/$ D/,, 0$ E+/+&: 1
8
EXPERIMENT – 2
1. OBJECTIVE: T$ =$> &*+ +,&/$ +&>++ $,( ,( %&,/ / %&,/ ,'+. 2. APPSRATUS REQUIRED a) S&,/ G,'+ b) S&,/ G,'+ K/& 3. PROCEDURE 1. C$+& &*+ ,/ ,+ &$ &*+ %') 723V AC.8. 2. C$+& &*+ !$,( C+ T,%('+ &$ A &$ X ,( B &$ Y &+/,% $;/(+( $ &*+ $('+ ,% + $$ $(+ 7>*/&+ >/&* >*/&+ ,( ++ >/&* ++8. 3. C$+& &*+ $'&'& &+/, 7HI8 TP4 &$ V+ &+/, $0 D//&, P,+ M+&+. 4. C$+& &*+ $'&'& &+/, 7!O8 TP5 &$ -V+ &+/, $0 D//&, P,+ M+&+. 5. T' ON &*+ $>+ %>/&*. 6. !+,;+ &*+ $('+ $ 0$ 2-3 /'&+% 0$ >, ' 7. P,+ &*+ $,( $ &*+ ,&/+;+ >/&* &*+ /+,%/ %&+% $0 5. 4. OBSERVATION: a) N$&+ ($> &*+ $'&'& +,(/ $0 (//&, ,+ +&+ ,% %*$> +$>: +/*& / 78 5 1 15 11 511
O'&'& / 7/$ %&,/8 115 7A$.8 23 7A$.8 345 7A$.8 46 7A$.8 55 7A$.8
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
9
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