strength ofmaterials lab ji;: zt/, 2d a
TRANSCRIPT
14 .After entering the sample dimensions
l, click "NEXT".
Click on "Finish the sample"
15. If asked to continue another sample using same parameters, click YES.
16. This returns to step 6 for a fresh start for next lab group.
Data SheetStrength of Materials Lab
Date Ji;....:..."_Zt/, 2Da Time -------
AcrylicSample material
,.- •••• Length C ~
I10lYCarbonate
e W'ld"thoS v\.-, 0 t 501.~ ~---------r--------~----------4----------+----~--~
Thickness (II\. 0@ ( 0 ~ O ,"-Y!)I I,) V
Width (tip) if\. a /SO L(
Thickness (tip) 0, i-« 0.00 «;
3
Specimen 1 to 1
600.--------------------------------------------------------------------------,
100
.1
I500
400 :1
I........, 300..•....0~"'0rtl.9
200
o
0.0 3.01.0Extension [in]
2.0
2/24/201211:26:13 AM Page 1 of 1
FEB 2 Pot LOll
Specimen 1 to 1
600
500
400..-."-:£ 300uro 2000. ....J
100
a
~----,-' .- - ~.
Specimen #-- 1
0.0 1.0
Extension [in]
2.0 3.0
Specimen Length Width Thickness Final length Final width Final Modulus (Automaticthickness Young's)label [in] [in] [in] [in] [in] finl rksil
Polycarbon 3.00 0.500 0.130 5.311 0.098 0.389 3,344c-.__ 9_~ ___ ---
Load at Yield (Offset .2 Maximum Extenslon at I Load at Extension atBreak%) Load Maximum Load (Standard) Break (Standard)[Ibf] [Ibf] [in] flbfl [in]----- 580.0 0.23 I 500.6 2.79
Page 1 of 1 Polycarbonate
24Feb2012. is_tens
Specimen 1 to 1
700,-------------------------------------------------------------------------,
500
,......., 400'"-.DL::. Specimen #"'0ro -- 1.3
300
-0.02 0.02 0.06 0.08 0.10
Extension [in]
0.14 0.16 0.200.180.00 0.04 0.12
2/24/2012 11: 16: 58 AM Page 1 of 1
FEB 2 4 l012
Speci men 1 to 1
700
600 ,' .. , ..
500~.•...:9 400 .."0ro 3000..J
200
100
0
Specimen #-- 1
-0.02 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20
Extension [in]
Specimen Length Width Thickness Final length Final width Final Modulus (Automaticthickness Young'S)label [in] [in] [in] [in] [in] lin 1 rksil
Acrvlic 3.00 0.106 0.502 4.100 0.390 0.490 8249
Load at Yield (Offset .2 Maximum Extension at Load at Extension atBreak%) Load Maximum Load I (Standard) Break (Standard)[Ibf] [Ibf] [in] rIbfl [in]
----- 629.8 0.19 629.8 0.19
Page 1 of 1Acrylic
c. Three Point Bend TestThe bend test is used for brittle materials such as ceramics. Results from a tensile test onthese materials show significant scatter. Often a sample breaks just putting it into the device.Instead, a compressive load is applied at three points on the sample. Perform a compressivebend test on the glass samples available to you in the lab.
6. Flexural strength is defined as:
3FLFlexstrength = --2
2wh
Calculate the flexural strength of the sample(s) you tested, based on the parameters shown in thepicture .1
rF ~Glass specimen Ceramic specimen ~
~Length between rollers, L 3'- .3;/6(I\... ' / \)
Width of the specimen, W iA /.3S> 3,D':3 IThickness of the specimen, h 0.2- )....(,; O.}»$' IIForce required to break the\ifeCimen, F Ibt 132 ~Specimen deflection, () ""1 o OIS ~
~
6
FEB 2 4 Z0129gf£l.l!lt?.Jq'2I~._ .....•..... __ ._ __ _.... .. _ _ __ _._ __ .i.IJ!SJ;!Si3.t~U._.... '_'" _ _ ..__ l'OJl:9.QQ.QOJpfLr:o.i!L._. .i.Sp.~<.;imeJu;>fQPeni~$:J·'1~t.~[i9L.."'_"'" _ ..;.pla.s:~.tlgjc!~T .. Specimenpropertles: Thickness ' O.03937in,~pe~!II!~,!_p!"QQ~ni§_:....wlQ.th~__ ~..__ _._._.._ _ .._..__ ..J..9.:.~2IZQjll __ .__._ .._................. .. _ __.._ _ _..,Graph 1
Time vs. Load
150 ,.----~--
o
100
50 Measurement
-- Load [Ibf]
o 10 20 30 40 50 60 70 80
Time [s]
Graph 2
Time vs. Extension
0.12 .,-----------,
0.10
0.08
0.06
0.04
0.02O.00 -1"1,....,..-'t-!-. -t-f-t-f-f-f-e-t-f-t-r++r+d
01020304050607080
Time [5]
Measurement I--- Extension [iljl]
Results table 1... -- . -- .
Nonotes
Maximum Load[Ibf]
132.02
Extension at MaximumLoad[in]0.02
Time at Maximum Load[s]
79.10
Specimen note 1
Rate 1[lbffrTlin]
i : 100.00