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8/19/2019 Engineering Materials Lab Report
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ENGINEERING MATERIALSLAB PROGRESS REPORT
MAY 2014
GROUP 27
Team Members:
Harrivin A/L i!a"a#$maran
1%&'(
Ni)*n Sa+ H*n, -en
1%&40
La$ -a. M$n1%&1
Prasan. Ra! A/L Bas#aran
1%&&
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Mar+an As"raa
1%&%1
TABLE OF CONTENTS
PRO3ET BA-GRO5N6Background of Sample
Pro!lem S"a"emen"
2
O!#ec"$%e & Scope2
LITERAT5RE REIE7Rock'ell Te(" )*+od Te(" )
METHO6OLOGYTe("( ,e"-od( .Pro#ec" Ac"$%$"$e( 7/e0 ,$le("one & Gan"" C-ar" 7
RES5LT*+od Te(" 1Rock'ell Te(" 1
6IS5SSION*+od *mpac" Te("
Rock'ell 3ardne(( Te("
4
ONL5SION
RE8ERENES
2
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APPEN6IES
)
PRO3ET BA-GRO5N6
Background of Sample
In .is 9ab *$r ,r*$ +as ,iven a sam9e as s.*+n in 8i,$re 1;1 an< 1;2; T.e sam9e
is a =arb*n see9 bar +i. ,r**ve a .e * ar; 7e =an see .a *$r sam9e .as
.e *99*+in, =.ara=erisi=s:
P."si=a9 Aearan=e :
T.ree ie=es * see9 +.i=. are si9ver in =*9*$r an< .ave a ,rea am*$n * +ei,.
re9aive * is si>e;
F*GURE
F*GURE 2
8r*m b*. * .e ?,$re s.*+n ab*ve @ ea=. * .e se=imen .ave simi9ar
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1
Pro!lem S"a"emen"
T.e r*b9em saemen a
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2
LITERAT5RE REIE7
Rock'ell Te("
I enab9es .e $ser * er*rm an a==$rae .ar
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Ima= sren,. ess are $se< * meas$re a maeria9s abi9i" * +i.san< s.*=#
9*a*< ima= ener," * a se=imen +i99 in=9$
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K 8ra=$re me=.anism
4
METHD!"#
ROCKWELL HAR!ESS "ES"
aF APPARAT5S
T.ere are a e+ eC$imen reC$ire< *
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bF SIGNI8IANE O8 RO-7ELL HAR6NESS TESTIn*< ima= es ma=.ine is $se< +i. avarie" * en
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=F SIGNI8IANE O8 IO6 TEST : N*=.e< I>*< Ima= is a sin,9e *in es
.a meas$res a maeria9s resisan=e *
ima= r*m a s+in,in, en*<
ima= is
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' A5G5ST
2014
1; Se=*n< ,r*$ meein, is .e9< a i99a,e ' =ae * =*m9ee Lab
8ina9 Re*r;
2; 6is=$ssi*n an< =*n=9$si*n * 9ab re*r i< *< es
6ATE : 22/0/2014
SAMPLE : Mi9< See9 TESTING E5IPMENT : Ams9er R-P 40ASTM : ASTM E2'San
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Maeria9s
Rock'ell Te(" Tab9e ': 6aa * Se=imen
J Tesin,EC$imen
Tab9e 4: Res$9 *
R*=#+e99 Har
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*+od *mpac" Te("
This %isc&ssio' is (ase% &po' o&r o(ser)atio' o' the Izo% test that was co'%&cte% o' the
three specime's o* Mil% +teel at a co'sta't temperat&re a'% co'sta't pe'%&l&m e'er,-.
The pe'%&l&m e'er,- &se% was co'trolle% to 2.75 0o&le a'% a swi', a',le o* 51
was recor%e% whe' the sample was 'ot place% i' (etwee' the pe'%&l&m. Tho&,h the pe'%&l&m
e'er,- was s&ppose% to (e at 11 0o&les3 a ra'%om error ca&se% it to (e at 2.75 0o&les. 4 Ap =
2.75 0o&les
The samples were place% o' the Izo% machi'e a'% the test was carrie% o&t o'e (- o'e.
Their A) a'% A) )al&es were recor%e% at 1.2 0 a'% 1.16 0 respecti)el- *or the *irst sample.
5.1 0 a'% 8.7 0 *or the seco'% sample a'% *or the thir% sample 6.8 0 a'% 61.8 0 .
9rom the A) a'% A) )al&es o* each o* the three samples there was a promi'e't
relatio'ship i' the a',le o* the pe'%&l&m a*ter the impact. 9or the *irst sample the pe'%&l&m
sw&', &p to a*ter the coll&sio' with the sample. The seco'% a'% thir% experime'ts recor%e%
1 a'% 7 respecti)el-.
9rom this we ca' %etermi'e that there is a' a**iliatio' (etwee' the A) a'% A) with the
a',le o* the pe'%&l&m swi',3 which is : The hi,her the )al&e o* A) a'% A) 3 the lower the a',le
o* the pe'%&l&m swi', a*ter the impact. ' a)era,e o* the three samples3 their A) a'% A) were
75.8 0o&les a'% 75.16 0o&les.
I'terpreti', these %ata3 it is o()io&s that whe' the pe'%&l&m exerts more *orce to (rea
the sample3 there will (e less e'er,- to co'ti'&e the mome't&m o* the pe'%&l&m3 th&s re%&ci',
its swi', a',le.
ossi(le so&rce o* error *or this experime't i'cl&%e )ariatio' o* testi', co'%itio's s&ch as
temperat&re a'% h&mi%it- a'% strii', locatio'. I'homo,e'eo&s or %e*ecti)e samples *or
example i'co'siste'cies i' the 'otches. There is also a si,'i*ica't room *or error o* the testi',
apparat&s %&e to (eari', *rictio' a'% air resista'ce.
(Rock'ell 3ardne(( "e("
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An*.er me=.ani=a9 r*er" .a +as ese< is .e .ar
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me=.ani=a9 be.avi*r * .e maeria9 * .e sam9es +ere *baine
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12APPEN6IES
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F$gure 15 Une%en (urface of "-e "e(" (ample !efore F$gure 5
Rock'ell "e(" !e$ng conduc"ed on Rock'ell "e("8 L$g-" can !e (een pene"ra"$ng (ample!e"'een "-e (ample and gran$"e "a!le
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F$gure 45 Sample af"er *+od "e(" F$gure 5
Sample af"er all "e("( -a%e !eenconduc"ed8
1'
Sam9e min$es * meein,
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ENGINEERING MATERIALS LAB GROUP 27MINUTES OF MEETING 1
Date : 23 June 2014Loat!on: In"o#$at!on Re%ou#e &ente# Sta#t t!$e: 3PM
Attendees
• P#e%ent: 'a##!(!n )&*a!#+, N!-on Sa., Ma#.an A%/#aa", Lau a* Mun, P#a%ant* Ra Ba%a#an
Agenda Item Discussion Action / Decision / Proposal
1 Dete#$!ne #eu!#e$ent% o" La5 P#o6#e%% Reo#t
8 Me$5e#% ont#!5ute9 !9ea% on *o. to
o$ete t*e La5 P#o6#e%% Reo#t
8 1%t 9#a"t o" La5 P#o6#e%% Reo#t !%
%ta#te9
2 D#a"t out P#oet
Ba6#oun9
8 D!%u%%!on on *o. to 9ete#$!ne P#o5e$
State$ent, O5et!(e an9 Soe8 Se!$en .a% %tu9!e9 to "!n9 !n"o#$at!on
"o# Sa$e Ba6#oun9
8D!(!%!on o" ta%%
8Lau a* Mun .a% ta%e9 .!t* .#!t!n6
out t*e P#o5e$ State$ent, O5et!(e
an9 Soe8 Ma#.an A%/#aa" .a% ta%e9 .!t*
.#!t!n6 out t*e Sa$e Ba6#oun9
3 Dete#$!ne %ou#e% "o#
L!te#atu#e Re(!e.
8D!%u%%!on on .*e#e to "!n9 %ou#e% "o#
L!te#atu#e Re(!e. o" %a$e8 Inte#net an9 te-t5oo 9ee$e9 to 5e t*e
5e%t #e%ou#e8D!(!%!on o" ta%%
8 N!-on Sa. ta%e9 .!t* .#!t!n6 out
L!te#atu#e Re(!e.
4 Dete#$!ne te%t% to 5e
on9ute9 an9
$et*o9oo6/
8 D!%u%%!on on $o%t %u!ta5e te%t to 5e
on9ute9 .!t* 6!(en %a$e8 I;o9 te%t, B#!ne te%t an9 $!#o%t#utu#e
te%t!n6 *o%en8Met*o9oo6/ an9 too% #eu!#e9 "o# ea* te%t
.a% ooe9 u8D!(!%!on o" ta%%
8 P#a%ant* Ra Ba%a#an ta%e9 .!t*
.#!t!n6 out t*e Met*o9oo6/
En9 T!$e: