Changeset 2814 for Tutorials/2DStrain


Ignore:
Timestamp:
Apr 27, 2017 12:07:33 PM (5 years ago)
Author:
vondreele
Message:

2D Strain update

Location:
Tutorials/2DStrain
Files:
2 added
5 deleted
5 edited

Legend:

Unmodified
Added
Removed
  • Tutorials/2DStrain/Strain fitting of 2D data in GSAS-II.htm

    r2384 r2814  
    2424 <o:DocumentProperties>
    2525  <o:Author>Von Dreele</o:Author>
    26   <o:LastAuthor>Von Dreele</o:LastAuthor>
    27   <o:Revision>15</o:Revision>
    28   <o:TotalTime>733</o:TotalTime>
     26  <o:LastAuthor>vondreele</o:LastAuthor>
     27  <o:Revision>16</o:Revision>
     28  <o:TotalTime>762</o:TotalTime>
    2929  <o:Created>2014-01-13T15:39:00Z</o:Created>
    30   <o:LastSaved>2016-07-28T18:34:00Z</o:LastSaved>
    31   <o:Pages>19</o:Pages>
    32   <o:Words>1229</o:Words>
    33   <o:Characters>7008</o:Characters>
     30  <o:LastSaved>2017-04-27T17:05:00Z</o:LastSaved>
     31  <o:Pages>1</o:Pages>
     32  <o:Words>1234</o:Words>
     33  <o:Characters>7039</o:Characters>
    3434  <o:Company>Argonne National Laboratory</o:Company>
    3535  <o:Lines>58</o:Lines>
    3636  <o:Paragraphs>16</o:Paragraphs>
    37   <o:CharactersWithSpaces>8221</o:CharactersWithSpaces>
     37  <o:CharactersWithSpaces>8257</o:CharactersWithSpaces>
    3838  <o:Version>16.00</o:Version>
    3939 </o:DocumentProperties>
     
    4848<!--[if gte mso 9]><xml>
    4949 <w:WordDocument>
    50   <w:View>Print</w:View>
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    670         mso-font-charset:1;
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    12901289        mso-ascii-theme-font:minor-latin;
    12911290        mso-hansi-font-family:Calibri;
    1292         mso-hansi-theme-font:minor-latin;}
     1291        mso-hansi-theme-font:minor-latin;
     1292        mso-bidi-font-family:"Times New Roman";
     1293        mso-bidi-theme-font:minor-bidi;}
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    12941295<![endif]--><!--[if gte mso 9]><xml>
     
    13081309<p class=MsoNormal>For this demo, data were collected with a MAR2300 area
    13091310detector at APS 1-ID-C with a wavelength 0.12398 Å (100<span style='font-family:
    1310 Symbol'>m</span>m diameter beam) from a 1.5mm square hot rolled steel test
    1311 specimen; the front surface has been dusted with some CeO<sub>2</sub> to aid in
     1311Symbol'>m</span>m diameter beam) from a 1.5mm square hot rolled steel test specimen;
     1312the front surface has been dusted with some CeO<sub>2</sub> to aid in
    13121313calibration. Three images are used here; one is with no load on the sample and
    13131314the other two are with the sample under tension along the y-axis (vertical).
     
    13171318entries are listed in <b style='mso-bidi-font-weight:normal'><span
    13181319style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    1319 mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Calibri;mso-bidi-theme-font:
    1320 minor-latin'>bold face</span></b> below as <b style='mso-bidi-font-weight:normal'><span
    1321 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    1322 mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Calibri;mso-bidi-theme-font:
     1320mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>bold face</span></b>
     1321below as <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
     1322mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:
    13231323minor-latin'>Help/About GSAS-II</span></b>, which lists first the name of the
    13241324menu (here <b style='mso-bidi-font-weight:normal'><span style='font-family:
    13251325"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
    1326 minor-latin;mso-bidi-font-family:Calibri;mso-bidi-theme-font:minor-latin'>Help</span></b>)
    1327 and second the name of the entry in the menu (here <b style='mso-bidi-font-weight:
    1328 normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    1329 minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Calibri;
    1330 mso-bidi-theme-font:minor-latin'>About GSAS-II</span></b>).</p>
     1326minor-latin;mso-bidi-theme-font:minor-latin'>Help</span></b>) and second the
     1327name of the entry in the menu (here <b style='mso-bidi-font-weight:normal'><span
     1328style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
     1329mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>About GSAS-II</span></b>).</p>
    13311330
    13321331<h2>Step 1: Start GSAS-II and read the images</h2>
     
    13381337shown; its appearance will depend on your OS. Change the search directory to <b
    13391338style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    1340 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
    1341 Calibri;mso-bidi-theme-font:minor-latin'>2Dstrain/data</span></b> and then
    1342 select the files <b style='mso-bidi-font-weight:normal'><span style='font-family:
    1343 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
    1344 minor-latin;mso-bidi-font-family:Calibri;mso-bidi-theme-font:minor-latin'>nx09_strain_001.mar<span
    1345 class=GramE>2300, <span style='font-family:"Times New Roman",serif;font-weight:
    1346 normal'><span style='mso-spacerun:yes'> </span></span>nx</span>09_strain_006.mar2300
    1347 </span></b>and <b style='mso-bidi-font-weight:normal'><span style='font-family:
    1348 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
    1349 minor-latin'>nx09_strain_011.mar2300</span></b> and press <b style='mso-bidi-font-weight:
     1339mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:
     1340minor-latin'>2Dstrain/data</span></b> and then select the files <b
     1341style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
     1342mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:
     1343minor-latin'>nx09_strain_001.mar2300<span class=GramE>, <span style='font-family:
     1344"Times New Roman",serif;font-weight:normal'><span
     1345style='mso-spacerun:yes'> </span></span>nx09</span>_strain_006.mar2300 </span></b>and
     1346<b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
     1347mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>nx09_strain_011.mar2300</span></b>
     1348and press <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
     1349mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:
     1350minor-latin'>Open</span></b>.<span style='mso-no-proof:yes'> Select the 1<sup>st</sup>
     1351image (001) from the GSAS-II data tree and select </span><b style='mso-bidi-font-weight:
    13501352normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    1351 minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Calibri;
    1352 mso-bidi-theme-font:minor-latin'>Open</span></b>.<span style='mso-no-proof:
    1353 yes'> Select the 1<sup>st</sup> image (001) from the GSAS-II data tree and
    1354 select </span><b style='mso-bidi-font-weight:normal'><span style='font-family:
    1355 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
    1356 minor-latin;mso-no-proof:yes'>Image Controls</span></b><span style='mso-no-proof:
    1357 yes'>; adjust the </span><b style='mso-bidi-font-weight:normal'><span
    1358 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    1359 mso-hansi-theme-font:minor-latin;mso-no-proof:yes'>Max intensity</span></b><span
     1353minor-latin;mso-hansi-theme-font:minor-latin;mso-no-proof:yes'>Image Controls</span></b><span
     1354style='mso-no-proof:yes'>; adjust the </span><b style='mso-bidi-font-weight:
     1355normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
     1356minor-latin;mso-hansi-theme-font:minor-latin;mso-no-proof:yes'>Max intensity</span></b><span
    13601357style='mso-no-proof:yes'> so that the CeO2 rings are visible (~1500 will
    1361 suffice). You should see:<o:p></o:p></span></p>
     1358suffice or 99%). You should see:<o:p></o:p></span></p>
    13621359
    13631360<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shapetype
     
    13811378 <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/>
    13821379 <o:lock v:ext="edit" aspectratio="t"/>
    1383 </v:shapetype><v:shape id="Picture_x0020_22" o:spid="_x0000_i1045" type="#_x0000_t75"
    1384  style='width:524.25pt;height:450pt;visibility:visible;mso-wrap-style:square'>
     1380</v:shapetype><v:shape id="_x0000_i1045" type="#_x0000_t75" style='width:524.25pt;
     1381 height:450pt;visibility:visible;mso-wrap-style:square'>
    13851382 <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image001.png"
    13861383  o:title=""/>
    13871384</v:shape><![endif]--><![if !vml]><img width=699 height=600
    13881385src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image001.png"
     1386v:shapes="_x0000_i1045"><![endif]><o:p></o:p></span></p>
     1387
     1388<p class=MsoNormal><span style='mso-no-proof:yes'>For the image and <o:p></o:p></span></p>
     1389
     1390<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
     1391 id="Picture_x0020_22" o:spid="_x0000_i1044" type="#_x0000_t75" style='width:510.75pt;
     1392 height:438.75pt;visibility:visible;mso-wrap-style:square'>
     1393 <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image022.png"
     1394  o:title=""/>
     1395</v:shape><![endif]--><![if !vml]><img width=681 height=585
     1396src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image022.png"
    13891397v:shapes="Picture_x0020_22"><![endif]><o:p></o:p></span></p>
    1390 
    1391 <p class=MsoNormal><span style='mso-no-proof:yes'>For the image and <o:p></o:p></span></p>
    1392 
    1393 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
    1394  id="Picture_x0020_2" o:spid="_x0000_i1044" type="#_x0000_t75" style='width:471.75pt;
    1395  height:388.5pt;visibility:visible;mso-wrap-style:square'>
    1396  <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image002.png"
    1397   o:title=""/>
    1398 </v:shape><![endif]--><![if !vml]><img width=629 height=518
    1399 src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image002.png"
    1400 v:shapes="Picture_x0020_2"><![endif]><o:p></o:p></span></p>
    14011398
    14021399<p class=MsoNormal><span style='mso-no-proof:yes'>for the controls.<o:p></o:p></span></p>
     
    14371434<p class=MsoNormal>Use <b style='mso-bidi-font-weight:normal'><span
    14381435style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    1439 mso-hansi-theme-font:minor-latin'>Operations/Calibrate</span></b>, select 5
     1436mso-hansi-theme-font:minor-latin'>Calibration/Calibrate</span></b>, select 5
    14401437points on the inner CeO<sub>2</sub> ring with left mouse button and start
    14411438calibration with right mouse button. The result should be something like</p>
    14421439
    14431440<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
    1444  id="Picture_x0020_24" o:spid="_x0000_i1043" type="#_x0000_t75" style='width:524.25pt;
    1445  height:450pt;visibility:visible;mso-wrap-style:square'>
     1441 id="_x0000_i1043" type="#_x0000_t75" style='width:524.25pt;height:450pt;
     1442 visibility:visible;mso-wrap-style:square'>
    14461443 <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image003.png"
    14471444  o:title=""/>
    14481445</v:shape><![endif]--><![if !vml]><img width=699 height=600
    14491446src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image003.png"
    1450 v:shapes="Picture_x0020_24"><![endif]></span></p>
     1447v:shapes="_x0000_i1043"><![endif]></span></p>
    14511448
    14521449<p class=MsoNormal>I’ve zoomed in to show that the CeO2 rings are well fitted
     
    14551452
    14561453<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
    1457  id="Picture_x0020_25" o:spid="_x0000_i1042" type="#_x0000_t75" style='width:471.75pt;
    1458  height:388.5pt;visibility:visible;mso-wrap-style:square'>
    1459  <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image004.png"
    1460   o:title=""/>
    1461 </v:shape><![endif]--><![if !vml]><img width=629 height=518
    1462 src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image004.png"
    1463 v:shapes="Picture_x0020_25"><![endif]></span><span
     1454 id="_x0000_i1042" type="#_x0000_t75" style='width:510.75pt;height:438.75pt;
     1455 visibility:visible;mso-wrap-style:square'>
     1456 <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image023.png"
     1457  o:title=""/>
     1458</v:shape><![endif]--><![if !vml]><img width=681 height=585
     1459src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image023.png"
     1460v:shapes="_x0000_i1042"><![endif]></span><span
    14641461style='mso-spacerun:yes'> </span></p>
    14651462
     
    14671464
    14681465<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
    1469  id="Picture_x0020_26" o:spid="_x0000_i1041" type="#_x0000_t75" style='width:609.75pt;
    1470  height:89.25pt;visibility:visible;mso-wrap-style:square'>
    1471  <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image005.png"
    1472   o:title=""/>
    1473 </v:shape><![endif]--><![if !vml]><img width=813 height=119
    1474 src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image005.png"
    1475 v:shapes="Picture_x0020_26"><![endif]></span></p>
    1476 
    1477 <p class=MsoNormal>You should now copy these results to the other image. Use <b
    1478 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    1479 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>Operations/Copy
    1480 controls</span></b>; a popup dialog will appear; select <b style='mso-bidi-font-weight:
    1481 normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    1482 minor-latin;mso-hansi-theme-font:minor-latin'>All IMG</span></b> and <b
    1483 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    1484 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>OK</span></b>.</p>
     1466 id="Picture_x0020_24" o:spid="_x0000_i1041" type="#_x0000_t75" style='width:744.75pt;
     1467 height:120pt;visibility:visible;mso-wrap-style:square'>
     1468 <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image024.png"
     1469  o:title=""/>
     1470</v:shape><![endif]--><![if !vml]><img width=993 height=160
     1471src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image024.png"
     1472v:shapes="Picture_x0020_24"><![endif]></span></p>
     1473
     1474<p class=MsoNormal>You should now copy these results to the other image. Use <span
     1475class=SpellE><b style='mso-bidi-font-weight:normal'><span style='font-family:
     1476"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
     1477minor-latin'>Parms</span></b></span><b style='mso-bidi-font-weight:normal'><span
     1478style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
     1479mso-hansi-theme-font:minor-latin'>/Copy controls</span></b>; a popup dialog
     1480will appear; select <b style='mso-bidi-font-weight:normal'><span
     1481style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
     1482mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Set </span></b><span
     1483class=GramE><b style='mso-bidi-font-weight:normal'><span style='font-family:
     1484"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
     1485minor-latin'>All</span></b></span> and <b style='mso-bidi-font-weight:normal'><span
     1486style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
     1487mso-hansi-theme-font:minor-latin'>OK</span></b>.</p>
    14851488
    14861489<h2 style='tab-stops:2.3in'>Step 3: Fitting unstrained steel</h2>
     
    14911494first image (001) and the <b style='mso-bidi-font-weight:normal'><span
    14921495style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    1493 mso-hansi-theme-font:minor-latin'>Stress/Strain</span></b> tree item. An empty
    1494 plot (“Strain”) will appear and the initial Stress/Strain data window</p>
     1496mso-hansi-theme-font:minor-latin'>Stress/Strain</span></b> tree item. An empty plot
     1497(“Strain”) will appear and the initial Stress/Strain data window</p>
    14951498
    14961499<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
     
    15161519class=GramE><b style='mso-bidi-font-weight:normal'><span style='font-family:
    15171520"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
    1518 minor-latin'>a</span></b></span> and use the mouse left button to select a
     1521minor-latin'>a</span></b> and</span> use the mouse left button to select a
    15191522ring. Do as many as you like but be sure to select some CeO<sub>2</sub> rings
    15201523as well; it is useful to zoom in to help with the selection. You can control
     
    15221525style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    15231526mso-hansi-theme-font:minor-latin'>Image Controls</span></b>. Each time you pick
    1524 a ring, GSAS-II will display (briefly) the <b style='mso-bidi-font-weight:normal'><span
    1525 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    1526 mso-hansi-theme-font:minor-latin'>Strain</span></b> plot with the points it
    1527 found and then show the <b style='mso-bidi-font-weight:normal'><span
     1527a ring, GSAS-II show the <b style='mso-bidi-font-weight:normal'><span
    15281528style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    15291529mso-hansi-theme-font:minor-latin'>2D Powder Image</span></b> zoomed in where
    1530 you were looking before your selection. I chose 12 rings. My Strain plot showed</p>
     1530you were looking before your selection. I chose 12 rings. Do <b
     1531style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
     1532mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:
     1533minor-latin'>Operations/Fit stress/strain;</span></b> the Strain plot is
     1534updated to show</p>
    15311535
    15321536<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
     
    15391543v:shapes="Picture_x0020_28"><![endif]></span></p>
    15401544
    1541 <p class=MsoNormal>Notice that each ring is plotted in different colors (they
    1542 are somewhat mixed for the two lines ~2Å! We will fix this next.)</p>
     1545<p class=MsoNormal>Notice that each ring is plotted in different colors (they may
     1546be somewhat mixed for the two lines ~2Å! We will fix this next.)</p>
    15431547
    15441548<p class=MsoNormal>The 2D Powder Image shows the picks as well</p>
     
    15551559<p class=MsoNormal>And the rings are listed on the <b style='mso-bidi-font-weight:
    15561560normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    1557 minor-latin;mso-hansi-theme-font:minor-latin'>Stress/Strain</span></b> data window;
    1558 a scroll bar allows easy access to all the entries.</p>
    1559 
    1560 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
    1561  id="Picture_x0020_30" o:spid="_x0000_i1037" type="#_x0000_t75" style='width:569.25pt;
    1562  height:411.75pt;visibility:visible;mso-wrap-style:square'>
    1563  <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image009.png"
    1564   o:title=""/>
    1565 </v:shape><![endif]--><![if !vml]><img width=759 height=549
    1566 src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image009.png"
    1567 v:shapes="Picture_x0020_30"><![endif]></span></p>
    1568 
    1569 <p class=MsoNormal>We can now fix the mixing of the two 2Å lines; change the <b
     1561minor-latin;mso-hansi-theme-font:minor-latin'>Stress/Strain</span></b> data
     1562window; a scroll bar allows easy access to all the entries.</p>
     1563
     1564<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
     1565 id="Picture_x0020_25" o:spid="_x0000_i1037" type="#_x0000_t75" style='width:619.5pt;
     1566 height:399pt;visibility:visible;mso-wrap-style:square'>
     1567 <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image025.png"
     1568  o:title=""/>
     1569</v:shape><![endif]--><![if !vml]><img width=826 height=532
     1570src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image025.png"
     1571v:shapes="Picture_x0020_25"><![endif]></span></p>
     1572
     1573<p class=MsoNormal>If necessary, we can now fix the mixing of the two 2Å lines;
     1574change the <b style='mso-bidi-font-weight:normal'><span style='font-family:
     1575"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
     1576minor-latin'>Pixel search range</span></b> to <b style='mso-bidi-font-weight:
     1577normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
     1578minor-latin;mso-hansi-theme-font:minor-latin'>5</span></b> for both. Each
     1579change will cause a refresh of the ring selections; after you are done the <b
    15701580style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    1571 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>Pixel search
    1572 range</span></b> to <b style='mso-bidi-font-weight:normal'><span
    1573 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    1574 mso-hansi-theme-font:minor-latin'>5</span></b> for both. Each change will cause
    1575 a refresh of the ring selections; after you are done the <b style='mso-bidi-font-weight:
    1576 normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    1577 minor-latin;mso-hansi-theme-font:minor-latin'>Strain</span></b> plot should look
    1578 like</p>
     1581mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>Strain</span></b>
     1582plot should look like</p>
    15791583
    15801584<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
     
    15931597elements (&#949;<sub>11</sub>, &#949;<sub>12</sub> &amp; &#949;<sub>22</sub>)
    15941598that can be determined from a single 2D diffraction ring. The resulting Strain
    1595 plot now shows curves calculated from the fitted tensor elements; these are
    1596 very nearly straight lines as expected from an unloaded sample.<span
     1599plot now shows curves calculated from the fitted tensor elements; these are very
     1600nearly straight lines as expected from an unloaded sample.<span
    15971601style='mso-spacerun:yes'>  </span>In particular the austenite 111 line (~2.08Å)
    15981602is much flatter than the ferrite 200 line (~2.03Å); this reflects the sample
     
    16481652need to enter the applied load for each image. Unfortunately, this must be done
    16491653by hand here because the load value is not the image header. The loads are:
    1650 001: - 2.17425, 006: 527.917 and 011: 1004.41 all in <span class=SpellE>neutons</span>
     1654001: - 2.17425, 006: 527.917 and 011: 1004.41 all in <span class=SpellE>newtons</span>
    16511655(N). Each needs to be divided by the cross section area (2.25mm<sup>2</sup>) of
    16521656the sample; GSAS-II will do this bit of math for you, and this gives the values
     
    17341738<p class=MsoNormal>This table is the results of the sequential fit to the three
    17351739images. There are columns for each parameter; if you double click on a column
    1736 heading (try a steel e11 or e22 – I selected <span class=GramE><b
    1737 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    1738 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>1;e</span></b></span><b
    1739 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    1740 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>22</span></b>
     1740heading (try a steel e11 or e22 – I selected <b style='mso-bidi-font-weight:
     1741normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
     1742minor-latin;mso-hansi-theme-font:minor-latin'>1<span class=GramE>;e22</span></span></b>
    17411743from my list). The plot shows the variation of this parameter with image
    17421744sequence; press ‘<b style='mso-bidi-font-weight:normal'><span style='font-family:
     
    17611763normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    17621764minor-latin;mso-hansi-theme-font:minor-latin'>Global</span></b>) in the 1<sup>st</sup>
    1763 pull down box (I chose <span class=GramE><b style='mso-bidi-font-weight:normal'><span
    1764 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
    1765 mso-hansi-theme-font:minor-latin'>1;e</span></b></span><b style='mso-bidi-font-weight:
    1766 normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    1767 minor-latin;mso-hansi-theme-font:minor-latin'>22</span></b>) and enter <b
    1768 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
     1765pull down box (I chose <b style='mso-bidi-font-weight:normal'><span
     1766style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
     1767mso-hansi-theme-font:minor-latin'>1<span class=GramE>;e22</span></span></b>)
     1768and enter <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    17691769mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>m*<span
    17701770class=SpellE>x+b</span></span></b> in the equation box; the frame will change
     
    17931793Editor</span></b> window should look like; press <b style='mso-bidi-font-weight:
    17941794normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    1795 minor-latin;mso-hansi-theme-font:minor-latin'>OK</span></b> to exit this window.</p>
     1795minor-latin;mso-hansi-theme-font:minor-latin'>OK</span></b> to exit this
     1796window.</p>
    17961797
    17971798<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
     
    18401841
    18411842<p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape
    1842  id="Picture_x0020_41" o:spid="_x0000_i1025" type="#_x0000_t75" style='width:524.25pt;
     1843 id="Picture_x0020_26" o:spid="_x0000_i1025" type="#_x0000_t75" style='width:525pt;
    18431844 height:450pt;visibility:visible;mso-wrap-style:square'>
    1844  <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image021.png"
    1845   o:title=""/>
    1846 </v:shape><![endif]--><![if !vml]><img width=699 height=600
    1847 src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image021.png"
    1848 v:shapes="Picture_x0020_41"><![endif]></span></p>
    1849 
    1850 <p class=MsoNormal>When you look at the other lines, you should notice that the
    1851 ones at ca. 3.13Å, 1.91Å, and 1.63Å remain straight lines; these are from CeO<sub>2</sub>
    1852 and should be unchanged under load.</p>
     1845 <v:imagedata src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image026.png"
     1846  o:title=""/>
     1847</v:shape><![endif]--><![if !vml]><img width=700 height=600
     1848src="Strain%20fitting%20of%202D%20data%20in%20GSAS-II_files/image026.png"
     1849v:shapes="Picture_x0020_26"><![endif]></span></p>
     1850
     1851<p class=MsoNormal>The dashed line gives the d-zero position. When you look at
     1852the other lines, you should notice that the ones at ca. 3.13Å, 1.91Å, and 1.63Å
     1853remain straight lines; these are from CeO<sub>2</sub> and should be unchanged
     1854under load.</p>
    18531855
    18541856<p class=MsoNormal><o:p>&nbsp;</o:p></p>
     
    18561858<p class=MsoNormal>Again you could save the project with <b style='mso-bidi-font-weight:
    18571859normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:
    1858 minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Calibri;
    1859 mso-bidi-theme-font:minor-latin'>File/Save project</span></b> on the main <b
    1860 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    1861 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
    1862 Calibri;mso-bidi-theme-font:minor-latin'>GSAS-II data tree</span></b> menu
    1863 although it is not needed for any further tutorials. The strain results from
    1864 each image can be exported as a comma delimited set of values which can easily
    1865 be read by Microsoft Excel and other spread sheet programs; see <b
    1866 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif;
    1867 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin'>Export/Image
    1868 data as/Strain CSV file</span></b>.</p>
     1860minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>File/Save
     1861project</span></b> on the main <b style='mso-bidi-font-weight:normal'><span
     1862style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;
     1863mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>GSAS-II data
     1864tree</span></b> menu although it is not needed for any further tutorials. The
     1865strain results from each image can be exported as a comma delimited set of
     1866values which can easily be read by Microsoft Excel and other spread sheet
     1867programs; see <b style='mso-bidi-font-weight:normal'><span style='font-family:
     1868"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
     1869minor-latin'>Export/Image data as/Strain CSV file</span></b>.</p>
    18691870
    18701871</div>
  • Tutorials/2DStrain/Strain fitting of 2D data in GSAS-II_files/filelist.xml

    r1734 r2814  
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    2323 <o:File HRef="image019.png"/>
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    25  <o:File HRef="image021.png"/>
     25 <o:File HRef="image026.png"/>
    2626 <o:File HRef="filelist.xml"/>
    2727</xml>
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