The load frame outputs to a text file. The next tab (Load frame output) shows that exact file read into Excel with commas and spaces chosen as delimiters.Load frame output is in deflection (inches) and load (lbs).

The digital image correlation software outputs as a .csv, or "Comma separated values" file. Excel can open this file directly, but it is not a worksheet per se. The third tab (DIC output) shows the exact contents of that csv file. Notice it gives data point number, D0, D1, and E.D0 is the location of the first extensometer point (in pixels). D1 is the location of the second.E stands for Extensometer, and is the strain between the two points we selected in class.

When you have all the data, you should convert the load frame outputs from load and displacement to stress and strain, respectively.Nothing needs to be done to the DIC data.Plot the y values (stresses) using your two different strain columns as x values, on the same plot. See the Analysis tab for an example.Include a plot like the one in the Analysis tab (showing the two curves) for each sample in your report.

Explain your equation explicitly in the report (don't make us guess) and tell us why you chose that equation.

Using these two stress-strain curves, calculate all of the mechanical properties you've been quizzed on:

elastic modulus failure stresselastic limit failure strain.2% offset yield stress resilienceultimate tensile stress toughnessultimate tensile strain

Compare the two values you get (one from each curve) and discuss why they are (or are not) different.Do this for all four samples.

Finally, choose DIC or load frame data (whichever you deem to be more accurate) and compare the four samples to each other (as we've done in other labs).Note on sample 4: I apparently forgot to zero the displacement before our test started. Just take the first data point and set it to zero (by adding approximately 0.14 to every point) and things should be fine.Don't hesitate to come to us with questions.

Other available resources:Extensometer2.jpeg shows an image of the virtual extensomer used by our DIC software.Video files show contour plots of strain in the y-direction (the test direction) for all samples. In videos 3 and 4, the virtual extensometer is visible.Tensile4_pure is a video of sample 4 that shows exactly what the camera saw, played at double speed (in case the contours on the other videos annoy you).For those of you interested, I will include videos of Jia and I painting the samples. The report does not require that you watch these.

Please note that I did not convert load to stress in the Analysis tab. That's because we'd like you to figure out the equation.

The load frame outputs to a text file. The next tab (Load frame output) shows that exact file read into Excel with commas and spaces chosen as delimiters.

The digital image correlation software outputs as a .csv, or "Comma separated values" file. Excel can open this file directly, but it is not a worksheet per se. The third tab (DIC output) shows the exact contents of that csv file. Notice it gives data point number, D0, D1, and E.

When you have all the data, you should convert the load frame outputs from load and displacement to stress and strain, respectively.

Plot the y values (stresses) using your two different strain columns as x values, on the same plot. See the Analysis tab for an example.

Explain your equation explicitly in the report (don't make us guess) and tell us why you chose that equation.

Finally, choose DIC or load frame data (whichever you deem to be more accurate) and compare the four samples to each other (as we've done in other labs).Note on sample 4: I apparently forgot to zero the displacement before our test started. Just take the first data point and set it to zero (by adding approximately 0.14 to every point) and things should be fine.

Video files show contour plots of strain in the y-direction (the test direction) for all samples. In videos 3 and 4, the virtual extensometer is visible.Tensile4_pure is a video of sample 4 that shows exactly what the camera saw, played at double speed (in case the contours on the other videos annoy you).For those of you interested, I will include videos of Jia and I painting the samples. The report does not require that you watch these.

that I did not convert load to stress in the Analysis tab. That's because we'd like you to figure out the equation.

Series IX version

Sample ID: tensile1

Test Type: Tensile

Operator Name: ctm

Units: US Customary

Number of specimens:

Machine type: -------

Data Rate: 10

Crosshead Speed: 0.1

Second Speed: -------

Temperature: 73 Deg

Auto-start: Disabled Separate

User Defined Fields:1:[ ][ ]2:[ ][ ]3:[ ][ ]4:[ ][ ]5:[ ][ ]

Auxiliary Sample Inputs:1:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 0

Sample comments:[ ][ ]

___________________________________________________

Specimen: 1

Test end reason:

Diameter: 0.25 inSpec gauge len:Ext. gauge len:

Specimen label: [

Number of data

Maximum Load point:

Maximum Extension point:

Second Speed point:

Relaxation Start point:

Range Change point:

Extensometer Removal point:

Auxiliary Specimen Inputs:1:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 0

___________________________________________________1 0.00065411 28.1093684442 0.0022477 128.5797663 0.0039132 289.61330734 0.0055813 496.42054145 0.0072446 726.83299556 0.008912 971.19833377 0.0105802 1215.97239978 0.0122459 1450.63388679 0.0139126 1669.9762084

10 0.0155788 1870.653503411 0.0172476 2051.9645021

12 0.0189126 2212.325781313 0.0205818 2352.483398314 0.0222473 2469.928442415 0.0239138 2564.717895516 0.0255815 2638.347973617 0.0272474 2696.037011718 0.0289145 2743.135034319 0.0305804 2782.539379920 0.0322497 2817.723925921 0.0339135 2849.118627822 0.0355833 2878.463037123 0.0372474 2904.995434624 0.038914 2930.503686525 0.0405817 2954.112060526 0.0422474 2976.900952327 0.0439145 2998.822705128 0.0455811 3019.439160429 0.0472496 3039.670092730 0.0489135 3058.790136731 0.050583 3077.795922732 0.0522468 3095.50825233 0.0539148 3113.552001834 0.055582 3130.498730435 0.0572473 3147.043872136 0.058915 3163.360888737 0.0605803 3178.990844738 0.0622487 3194.520410239 0.0639136 3209.681860240 0.0655829 3224.626098641 0.0672478 3238.746093942 0.068914 3253.139038143 0.0705816 3266.693603544 0.0722476 3280.193457145 0.0739146 3293.797509746 0.0755811 3306.640673847 0.0772488 3319.665039148 0.0789135 3331.94262749 0.0805826 3344.583007950 0.0822483 3356.430981551 0.0839144 3368.492163252 0.0855813 3380.080224753 0.0872474 3391.482006954 0.0889145 3402.792431755 0.0905807 3413.581005956 0.092249 3424.692993257 0.0939138 3435.179516658 0.095582 3445.894580259 0.0972475 3455.579541

60 0.0989143 3465.873217861 0.1005817 3475.448437562 0.1022469 3485.08991763 0.1039157 3494.780151464 0.1055809 3503.656616265 0.107249 3512.862597666 0.1089139 3521.4187567 0.110583 3530.43066468 0.1122475 3538.543164169 0.113914 3547.117846870 0.1155825 3555.043017571 0.1172473 3562.523193572 0.118915 3570.424023673 0.120581 3577.802539274 0.1222491 3585.130908175 0.1239129 3591.791748176 0.1255824 3599.187573277 0.1272472 3605.169116278 0.1289143 3611.775097679 0.1305823 3617.893652480 0.1322474 3623.622851681 0.1339144 3629.647558682 0.1355812 3634.797070383 0.137249 3640.110620184 0.1389133 3644.851806885 0.1405835 3649.929614286 0.1422478 3653.88808687 0.1439143 3658.483935588 0.1455824 3662.112207189 0.1472474 3665.505102690 0.1489153 3668.964697291 0.1505813 3671.708935692 0.1522494 3674.530956993 0.1539137 3676.436328294 0.1555827 3678.568359395 0.1572477 3679.459423996 0.1589138 3680.650927997 0.1605821 3681.004931698 0.1622478 3680.806225499 0.1639146 3680.452832

100 0.165581 3678.7822997101 0.1672498 3677.1614013102 0.1689135 3674.089209103 0.1705833 3671.0511231104 0.1722484 3666.4661866105 0.1739143 3661.2127198106 0.1755821 3654.4667967107 0.1772473 3646.9358153

108 0.1789142 3638.1981202109 0.1805814 3627.555835110 0.1822494 3615.5606202111 0.1839138 3601.191333112 0.1855829 3584.158838113 0.1872482 3560.1398682114 0.1889157 3470.3996826115 0.1905835 3103.6372071116 0.1922492 2964.4170412117 0.1939165 2861.516211118 0.1955806 2776.4009766119 0.1972502 2670.9095704120 0.1989145 2573.8060303121 0.2005833 2464.8298585122 0.20208225 2341.0901125

8.32.00 Version date: 10 Jun 2004

Test Date: 3 Oct 2013

Method: 0

Edit date: -------

Geometry: Cylindrical

1 Number of channels: 2

Machine Control: STANDARD

pts/sec Extensometer: Disabled

in/min

F Humidity: 50 %

dimension entry: Enabled

Break detected

1 in2 in

]

points: 1441

969 Maximum Load: 3682.85571 lbf

1441 Maximum Extension: 0.24 in

------- Second Speed Extension: -------

-------

-------

-------

File Number D0 D1 E0 681.02642822 681.02642822 01 681.02642822 681.02270508 -5.47E-062 681.02642822 681.07177734 6.66E-053 681.02642822 681.15179443 0.00018408424 681.02642822 681.20391846 0.00026062175 681.02642822 681.35162354 0.00047750766 681.02642822 681.45404053 0.00062789387 681.02642822 681.63873291 0.0008990918 681.02642822 681.89056397 0.00126887259 681.02642822 682.15124512 0.0016516494

10 681.02642822 682.60180664 0.002313241111 681.02642822 683.04278565 0.002960762512 681.02642822 683.64605713 0.003846589213 681.02642822 684.24139404 0.004720765214 681.02642822 684.97790527 0.005802237415 681.02642822 685.79498291 0.007002011416 681.02642822 686.60205078 0.008187087317 681.02642822 687.55981445 0.009593440218 681.02642822 688.60595703 0.011129566519 681.02642822 689.65911865 0.012675998720 681.02642822 690.7144165 0.014225568621 681.02642822 691.76208496 0.015763934722 681.02642822 692.85638428 0.017370773523 681.02642822 693.95629883 0.018985858224 681.02642822 695.05944824 0.020605690825 681.02642822 696.16253662 0.02222543426 681.02642822 697.29901123 0.02389420227 681.02642822 698.40594482 0.025519592728 681.02642822 699.57800293 0.027240609829 681.02642822 700.68591309 0.028867432830 681.02642822 701.81115723 0.03051970931 681.02642822 702.91290283 0.032137483432 681.02642822 704.03515625 0.033785365533 681.02642822 705.19488525 0.035488281434 681.02642822 706.31744385 0.037136614335 681.02642822 707.43951416 0.03878423236 681.02642822 708.6015625 0.040490549137 681.02642822 709.7232666 0.042137626638 681.02642822 710.87695313 0.043831668839 681.02642822 712.02050781 0.045510832240 681.02642822 713.16973877 0.047198329141 681.02642822 714.28643799 0.048838060342 681.02642822 715.45953369 0.050560601143 681.02642822 716.56097412 0.052177924744 681.02642822 717.71148682 0.053867306645 681.02642822 718.8850708 0.055590562546 681.02642822 720.00610352 0.0572366565

47 681.02642822 721.15795898 0.058928009148 681.02642822 722.33081055 0.060650188549 681.02642822 723.45275879 0.062297627350 681.02642822 724.59613037 0.063976518851 681.02642822 725.75463867 0.065677642852 681.02642822 726.89465332 0.067351609553 681.02642822 728.06140137 0.069064825854 681.02642822 729.20422363 0.070742912655 681.02642822 730.36633301 0.072449326556 681.02642822 731.53485107 0.074165143157 681.02642822 732.67510986 0.075839467358 681.02642822 733.8314209 0.077537365359 681.02642822 734.96539307 0.079202458360 681.02642822 736.13848877 0.080924995261 681.02642822 737.25799561 0.082568846662 681.02642822 738.46411133 0.08433987263 681.02642822 739.60040283 0.086008369964 681.02642822 740.74224854 0.087685026265 681.02642822 741.91558838 0.089407928366 681.02642822 743.09063721 0.091133333767 681.02642822 744.26745606 0.092861339468 681.02642822 745.41564941 0.094547316469 681.02642822 746.58337402 0.096261970770 681.02642822 747.77874756 0.098017223271 681.02642822 748.90844727 0.099676042872 681.02642822 750.08135986 0.101398311673 681.02642822 751.27453613 0.103150337974 681.02642822 752.44268799 0.104865618175 681.02642822 753.62915039 0.106607787376 681.02642822 754.79016113 0.108312584577 681.02642822 755.99072266 0.110075458978 681.02642822 757.17175293 0.111809648679 681.02642822 758.32873535 0.1135085380 681.02642822 759.53588867 0.115281075281 681.02642822 760.72833252 0.117032028782 681.02642822 761.91516113 0.118774734483 681.02642822 763.06304932 0.120460264484 681.02642822 764.30157471 0.122278876685 681.02642822 765.49487305 0.124031081886 681.02642822 766.70367432 0.125806048587 681.02642822 767.91723633 0.127588018888 681.02642822 769.07922363 0.129294246489 681.02642822 770.31079102 0.131102636590 681.02642822 771.50915527 0.132862284891 681.02642822 772.72796631 0.134651958992 681.02642822 773.92529297 0.136410072493 681.02642822 775.17120361 0.138239532794 681.02642822 776.37347412 0.140004918

95 681.02642822 777.58093262 0.141777917796 681.02642822 778.80957031 0.143582001397 681.02642822 780.05389404 0.14540913798 681.02642822 781.2744751 0.14720140499 681.02642822 782.50256348 0.1490046978

100 681.02642822 783.75048828 0.1508371085101 681.02642822 784.9934082 0.1526621878102 681.02642822 786.21386719 0.154454276103 681.02642822 787.50445557 0.1563493311104 681.02642822 788.7510376 0.1581797749105 681.02642822 790.01068115 0.1600293964106 681.02642822 791.25488281 0.1618563533107 681.02642822 792.55718994 0.1637686193108 681.02642822 793.86517334 0.16568923109 681.02642822 795.12731934 0.1675425321110 681.02642822 796.43847656 0.1694677919111 681.02642822 797.73297119 0.1713685989112 681.02642822 799.0793457 0.1733455807113 681.02642822 800.38885498 0.1752684265114 681.02642822 801.72613525 0.177232042115 681.02642822 803.14581299 0.1793166548116 681.02642822 805.84106445 0.1832742989117 681.02642822 807.61743164 0.1858826578118 681.02642822 809.27178955 0.1883118749119 681.02642822 810.82269287 0.1905891746120 681.02642822 812.48114014 0.1930243969121 681.02642822 814.10430908 0.1954078078122 681.02642822 1116.9936523 0.6401619911123 681.02642822 670.47961426 -0.0154866446124 681.02642822 819.21209717 0.2029079348125 681.02642822 820.793396 0.2052298784126 681.02642822 822.44158936 0.2076500356127 681.02642822 824.03961182 0.2099965215128 681.02642822 825.60290527 0.2122920156129 681.02642822 827.2420044 0.2146988213130 681.02642822 828.88293457 0.2171083242131 681.02642822 830.49511719 0.219475612132 681.02642822 832.13421631 0.2218824178133 681.02642822 833.71636963 0.2242055982134 681.02642822 835.36853027 0.2266315967135 681.02642822 837.06317139 0.2291199565136 681.02642822 838.72149658 0.231554985137 681.02642822 840.394104 0.2340109944138 681.02642822 842.081604 0.2364888787139 681.02642822 843.74273682 0.2389280349140 681.02642822 845.38275147 0.2413361967141 681.02642822 883.69567871 0.2975938022142 681.02642822 1282.833252 0.8836761713

143 681.02642822 994.79364014 0.4607269168144 681.02642822 675.85577393 -0.0075924429145 681.02642822 676.22875977 -0.007044761146 681.02642822 875.14996338 0.2850455344147 681.02642822 677.05621338 -0.0058297515148 681.02642822 677.29412842 -0.0054804035149 681.02642822 677.2432251 -0.0055551487150 681.02642822 676.58807373 -0.0065171546151 681.02642822 676.74969482 -0.0062798345152 681.02642822 676.76556397 -0.0062565329153 681.02642822 1030.1861572 0.5126963258154 681.02642822 676.7789917 -0.0062368158155 681.02642822 676.90808106 -0.0060472647156 681.02642822 676.93585205 -0.0060064867157 681.02642822 991.00134277 0.4551584125158 681.02642822 676.93121338 -0.0060132979159 681.02642822 676.99957275 -0.0059129209

Load frame DICdeformation strain load E(xtensometer)

1 0.0006541111 0.000327055556 28.109368444 02 0.0022477 0.00112385 128.579766 -5.466960374E-063 0.0039132 0.0019566 289.6133073 6.6589367634E-054 0.0055813 0.00279065 496.4205414 0.00018408420155 0.0072446 0.0036223 726.8329955 0.00026062165856 0.008912 0.004456 971.1983337 0.00047750762317 0.0105802 0.0052901 1215.9723997 0.00062789383818 0.0122459 0.00612295 1450.6338867 0.00089909095559 0.0139126 0.0069563 1669.9762084 0.0012688725255

10 0.0155788 0.0077894 1870.6535034 0.001651649363311 0.0172476 0.0086238 2051.9645021 0.002313241129712 0.0189126 0.0094563 2212.3257813 0.002960762474713 0.0205818 0.0102909 2352.4833983 0.00384658924314 0.0222473 0.01112365 2469.9284424 0.00472076516615 0.0239138 0.0119569 2564.7178955 0.005802237428716 0.0255815 0.01279075 2638.3479736 0.007002011407217 0.0272474 0.0136237 2696.0370117 0.008187087252718 0.0289145 0.01445725 2743.1350343 0.009593440219819 0.0305804 0.0152902 2782.5393799 0.011129566468320 0.0322497 0.01612485 2817.7239259 0.012675998732421 0.0339135 0.01695675 2849.1186278 0.014225568622422 0.0355833 0.01779165 2878.4630371 0.015763934701723 0.0372474 0.0186237 2904.9954346 0.017370773479324 0.038914 0.019457 2930.5036865 0.018985858187125 0.0405817 0.02029085 2954.1120605 0.020605690777326 0.0422474 0.0211237 2976.9009523 0.022225433960627 0.0439145 0.02195725 2998.8227051 0.023894201964128 0.0455811 0.02279055 3019.4391604 0.025519592687529 0.0472496 0.0236248 3039.6700927 0.027240609750230 0.0489135 0.02445675 3058.7901367 0.028867432847631 0.050583 0.0252915 3077.7959227 0.030519708991132 0.0522468 0.0261234 3095.508252 0.032137483358433 0.0539148 0.0269574 3113.5520018 0.033785365521934 0.055582 0.027791 3130.4987304 0.03548828139935 0.0572473 0.02862365 3147.0438721 0.037136614322736 0.058915 0.0294575 3163.3608887 0.038784231990637 0.0605803 0.03029015 3178.9908447 0.040490549057738 0.0622487 0.03112435 3194.5204102 0.042137626558539 0.0639136 0.0319568 3209.6818602 0.043831668794240 0.0655829 0.03279145 3224.6260986 0.045510832220341 0.0672478 0.0336239 3238.7460939 0.047198329120942 0.068914 0.034457 3253.1390381 0.048838060349243 0.0705816 0.0352908 3266.6936035 0.0505606010556

0 0.05 0.1 0.15 0.2 0.250

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Convert your data to stress and strain!

Load frameDIC

StrainLo

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44 0.0722476 0.0361238 3280.1934571 0.052177924662845 0.0739146 0.0369573 3293.7975097 0.053867306560346 0.0755811 0.03779055 3306.6406738 0.055590562522447 0.0772488 0.0386244 3319.6650391 0.057236656546648 0.0789135 0.03945675 3331.942627 0.058928009122649 0.0805826 0.0402913 3344.5830079 0.060650188475850 0.0822483 0.04112415 3356.4309815 0.062297627329851 0.0839144 0.0419572 3368.4921632 0.063976518809852 0.0855813 0.04279065 3380.0802247 0.065677642822353 0.0872474 0.0436237 3391.4820069 0.067351609468554 0.0889145 0.04445725 3402.7924317 0.069064825773255 0.0905807 0.04529035 3413.5810059 0.070742912590556 0.092249 0.0461245 3424.6929932 0.072449326515257 0.0939138 0.0469569 3435.1795166 0.074165143072658 0.095582 0.047791 3445.8945802 0.075839467346759 0.0972475 0.04862375 3455.579541 0.077537365257760 0.0989143 0.04945715 3465.8732178 0.079202458262461 0.1005817 0.05029085 3475.4484375 0.080924995243562 0.1022469 0.05112345 3485.089917 0.08256884664363 0.1039157 0.05195785 3494.7801514 0.084339872002664 0.1055809 0.05279045 3503.6566162 0.086008369922665 0.107249 0.0536245 3512.8625976 0.087685026228466 0.1089139 0.05445695 3521.41875 0.08940792828867 0.110583 0.0552915 3530.430664 0.091133333742668 0.1122475 0.05612375 3538.5431641 0.092861339449969 0.113914 0.056957 3547.1178468 0.09454731643270 0.1155825 0.05779125 3555.0430175 0.096261970698871 0.1172473 0.05862365 3562.5231935 0.098017223179372 0.118915 0.0594575 3570.4240236 0.099676042795273 0.120581 0.0602905 3577.8025392 0.10139831155574 0.1222491 0.06112455 3585.1309081 0.10315033793475 0.1239129 0.06195645 3591.7917481 0.1048656180576 0.1255824 0.0627912 3599.1875732 0.10660778731177 0.1272472 0.0636236 3605.1691162 0.1083125844678 0.1289143 0.06445715 3611.7750976 0.11007545888479 0.1305823 0.06529115 3617.8936524 0.11180964857380 0.1322474 0.0661237 3623.6228516 0.11350852996181 0.1339144 0.0669572 3629.6475586 0.11528107523982 0.1355812 0.0677906 3634.7970703 0.11703202873583 0.137249 0.0686245 3640.1106201 0.11877473443784 0.1389133 0.06945665 3644.8518068 0.12046026438585 0.1405835 0.07029175 3649.9296142 0.12227887660386 0.1422478 0.0711239 3653.888086 0.12403108179687 0.1439143 0.07195715 3658.4839355 0.12580604851288 0.1455824 0.0727912 3662.1122071 0.127588018775

89 0.1472474 0.0736237 3665.5051026 0.12929424643590 0.1489153 0.07445765 3668.9646972 0.13110263645691 0.1505813 0.07529065 3671.7089356 0.1328622847892 0.1522494 0.0761247 3674.5309569 0.13465195894293 0.1539137 0.07695685 3676.4363282 0.13641007244694 0.1555827 0.07779135 3678.5683593 0.13823953270995 0.1572477 0.07862385 3679.4594239 0.14000491797996 0.1589138 0.0794569 3680.6509279 0.14177791774397 0.1605821 0.08029105 3681.0049316 0.14358200132898 0.1622478 0.0811239 3680.8062254 0.14540913701199 0.1639146 0.0819573 3680.452832 0.147201403975

100 0.165581 0.0827905 3678.7822997 0.1490046978101 0.1672498 0.0836249 3677.1614013 0.150837108493102 0.1689135 0.08445675 3674.089209 0.152662187815103 0.1705833 0.08529165 3671.0511231 0.154454275966104 0.1722484 0.0861242 3666.4661866 0.156349331141105 0.1739143 0.08695715 3661.2127198 0.15817977488106 0.1755821 0.08779105 3654.4667967 0.160029396415107 0.1772473 0.08862365 3646.9358153 0.161856353283108 0.1789142 0.0894571 3638.1981202 0.163768619299109 0.1805814 0.0902907 3627.555835 0.165689229965110 0.1822494 0.0911247 3615.5606202 0.167542532086111 0.1839138 0.0919569 3601.191333 0.169467791915112 0.1855829 0.09279145 3584.158838 0.171368598938113 0.1872482 0.0936241 3560.1398682 0.173345580697114 0.1889157 0.09445785 3470.3996826 0.175268426538115 0.1905835 0.09529175 3103.6372071 0.177232041955116 0.1922492 0.0961246 2964.4170412 0.179316654801117 0.1939165 0.09695825 2861.516211 0.183274298906118 0.1955806 0.0977903 2776.4009766 0.185882657766119 0.1972502 0.0986251 2670.9095704 0.188311874866120 0.1989145 0.09945725 2573.8060303 0.190589174628121 0.2005833 0.10029165 2464.8298585 0.193024396896122 0.20208225 0.101041125 2341.0901125 0.195407807827

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Convert your data to stress and strain!

Load frameDIC

Strain

Load

0 0.05 0.1 0.15 0.2 0.250

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Convert your data to stress and strain!

Load frameDIC

Strain

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