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

24Feb2012.is_comp

2/24/2012 11:40: 23 AM Page 1 of 1