2 1

'lTll 3

n1?oonB!!

. " - ) t v -tun'rmnnll ulam{}|?,]n$nfltn,t tnfl nq{Mfl?ttt?{nfi1l1*.ti,tn1|no,]l.J. - t.- uutfr'r.t tunTtoonuuut.:u

1. oanuu..ruliul adau

2. oan uu:;uuiq ul.: i.ror nfidar,rrir

3. aanururrrinrll

4. a"n!!ru?.r3?i{urllrnr urlilunrrf, ni.l rfiourrir{rgrgrrulurur{aur.r

n1'sonBUUUiIrrteU

lnufrnTaanu uuli]|rnaau 1rifin.J.]lnir 360 cm. g,tc 4go cm. dl 20 cm.gthrn'olnnqrnrudn HBeamnu1a125x125mm. rl,ryrin ze.e filoni risor.run,rrudo

urnr ruf,n H geam filifiarrlamr'tu 20.4 m fid,rnin?rx 485.52 kg rlf,uuriu

rndorfirarudnusiuuu'r 2.3 mm. ( Checkered ptate ) ! 1r +xg t irrin OO.t filnnil

oiayi.rqriu l{i'.:urq o urir firhyrinr*r = ggo.o ts ruSn prate lur 9 mm. 1i

nrrfirudrllar.:clr.: 2 uriu tu1n4x8t rirurin zto fiInnirriali.rusiu irirurin:rl

=410kg rufinc light lip chanet r'r fi'lrr{i1n. rl1lfiin a.ez filani riuor.ru..ud.,*r, c- d x - 3 - "lighl lip chanel ilr,r l0 m lu'llunti = 83.2 kg uT yun latn6t,t.tfllt 485.52

.396.6i410r83.2 = 1,3/5.32 filani drunnrlupJd 16 ua:niNr: anuriu

rnnordrffi nlalnrf, n rJr:na!firanr:lanlatn:fi n dudr4utinnrnr:rontnarohn oo

mm rJwng4r 70 cm anirurinqrtlndonr;uan ti Z n'u

L

22

nrnd 16 ura{uriurqrtsu

irrnztenulus n:oi2-rur.!

l{rudnruiar etst 1030HR (Hot Ro )Tensite strength yietd strength;r strain

gauge fiar oesign lri6u yietd point

. . K O n 6 "=aa rc i

6 y = 44 x6.895 = 303.375 MPa

Sefty facter 1.5 . . o v= 303.375/1-5 = 202.25 MPl

.'. amlrfrlgrqadrulfi = 6 or= 292.25 irp2MC

Dh'I t 2

q1n design rfludr f,smqin .'.U=n-t usrC=t/2

| . ot'lr * *n tz t . . u un , t F - 15750, L = 200 mm

o(15750Y0.2) - . d{ 15750x0.2)

.'. 202.25 = t' 202.25

6 ..= g1g.g75l1 .5 = 202.25 MPa

MCI . . . 6*"

2

t = 45.4 mm (Li?ilur{{.rqr)

23

oonlt q ntorlnllt{ a,ttlfr9{ tuu 1/

nrnd rz urworq n:oiiau:,r

oonuurllrurhrirna qrJn:oiiau:r irlaarlulJi ta

ffi

I

t_Tq

l1-fI

?rasdnfi6

/\\i/

L

nTnfi ra 5rldruirir qrJnmiiaur.:

24

nT ni ts nlrqrln:oiiau:rtrrJlunrudinfu ruuddn rConrdr strain drfindu

afuqrJn:oiioinf,iqrJn:oiiau:r InoiqrJn:oiiofinfio {aiota,rqrJnroiinru:rdlld rniuo'aq n:siinu:rfiiuriuun6u.r n-,ruan,r1l1Jfizo

n1 2U ntnnofionol|otQuntu?ill:tn tn

L

25

1 - -|lnluo{nrnttYlu nflou Dofl[luu uJoniR q!n:ot?9t|:{ttn? ltl lliflrEUon lf ln:

nn.,flllrunnnuultsur rrruunsu rn r:nniln::usnlaln:a'nlultur6l 6nirnrroonrurt . , - )

oun:u?nll:{1,1t lrll n{ n1 21

n'rttTr 2t u q ntrwttut{ oonuuu tul]

L

o.nd zz qrJnrniirur.r

26

rhnrtaenu!lulctfi lqrlnaniia4:r

wiura6or {rilumuu r stidec:ilrd,r::tt:uucir laarrdrlrurrur:gdaufil 1u

ia.rrirNdaonuu l{ rirtirian,uuidauu a.:draml#,rurudrfia{unr!1un-rf,rwru

iramuirunuun:rs:urmd.:dli {urru rdua.r riu dauamufirunt*iu otal rirr#:uuri.r!flu 0 urnr un:nrudrmr{{qrrf,u 10,000 ln4 uior::tr:uuri.r6.r4 flu

oonuuuld drfrtrrtruurr stide lunlrirr:s:luulriri fi arrnntsn rCB.tro!

un:riramr i'runurn"r"u"nr,.iiod{n!#tl ;ruoruurd'uudrfi a{lr n1.20 Bl ' tarcain ( y/x )

r:a:uurfu 1 y ;

t

*-n Ai l t 1

I t lA U

nufi 23 nrnurtar nrlin:;a:umir ra.rq nmi{nqr

ri"rul nrlupJd r s

dfld"run1rruu! Stide

7 /I t lI t luL)

l f

f,:lrruruur sttoe

Es:ar1 s'loro.:lliu rr{6 (x)

L

27

n't 24 ntudr.! d'l drurl:ulu stide

nrrld 2s nrnun;.r n''rilurl u u sride

nrei;llel"rrneu raErmtuqrJnrnic"r uarrirqrJnrniiouNlrrirntf, n strain guug" riol{rtmarurrirazulair;drfi aiu

qrniruinfi n:;rirfrrornriudoufirralrnrntr.rUn:tl'ln'lttt2.llt Wheatstone bridgerCoinir{rgrgrrudrfi n{uqrnlrnrinaru$?sa i'.runa.r1utrrJC zz

28

nrnfi zo q nmidnur.rfiin strain gauge uazrirntiarlqr Wheatstone bridge

nrraon luldtrerrrdrfqrgrru

strain gause lifiiuHc;firnr#rdrc;fir1fii,r n lur,rvriruldsulll i z rit

1 ) = 1 2 0 Q , 2 ) = 3 s o Q

t) 6rurnrnmlrnttaql4n

6 =202.25MPa

E = 207 GPa

€ = 6 / E

= 2O2.25|2O7OO

= 0.000977 = 977 pE

2) c1n{nr AR=(GF) e (R)

= 2.1 (0.000977X120)

As = 6,2462 O

.'. A R L dsrt S{elrt = 0.2462 Q

Ho u M {.tqn

29

Nqi!€.: Wleat stone BriOge 1iiufiu strain gauge

Gauge dr n- tzo O

Bridge (!qrf eo = 0 V

r1n Page 't a R {.rqr -0.2462

lm +o.2a62 120 - 8.2A62

t2i - 0,2;,�J'2

rdolr i i re=sv

.'. t = Vln

n. = rzo+tzo = z+o O

RR = '120+120 = 240 Q

la! - 5/l20 = 0.04166 V

.'. rdourdrnr:ur{rgrprculuclv

r'ln{rt V=lR

lL = v/ RL = 5'|240 = 0,020833 v

IR=V/RR = 5/240 = 0.02833V

t2a + 9.2ft2

1 1 1R 240 2&

R =24o2 =120

.'. v.= t, q = 9.92963(120+0.2462) = 2.505129 V

30

VF= lR R- - 0 02083(12A 0.2462) = 2.494830 V

eo = 2.505129 2.494830 V

e , = 0 0 1 0 2 9 8 V

' ' eo . - = 0 O1O29B V

= 10.298 mV