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</div><div id="content">
<h1 class="title">Measurements</h1>
<div id="table-of-contents">
<h2>Table of Contents</h2>
<div id="text-table-of-contents">
<ul>
<li><a href="#orga941937">1. Experimental conditions</a></li>
<li><a href="#org0a36397">2. Measurements procedure</a></li>
<li><a href="#org9c8604e">3. Measurement Channels</a></li>
<li><a href="#org3ee1fb7">4. Experiments</a></li>
<li><a href="#orgaf6691c">5. Data Analysis</a>
<ul>
<li><a href="#orge954440">5.1. Loading of the data</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div id="outline-container-orga941937" class="outline-2">
<h2 id="orga941937"><span class="section-number-2">1</span> Experimental conditions</h2>
<div class="outline-text-2" id="text-1">
<ul class="org-ul">
<li>Measurement made in the experiment hutch</li>
<li>FS=256Hz</li>
<li>Made by Marc Lesourd on the 12 of October 2018</li>
</ul>
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
</colgroup>
<tbody>
<tr>
<td class="org-left"><b>Date</b></td>
<td class="org-left">2018-10-12</td>
</tr>
<tr>
<td class="org-left"><b>Sensors</b></td>
<td class="org-left">Geophones</td>
</tr>
<tr>
<td class="org-left"><b>Excitation</b></td>
<td class="org-left">Instrumented Hammer</td>
</tr>
<tr>
<td class="org-left"><b>Location</b></td>
<td class="org-left">Experimental Hutch</td>
</tr>
</tbody>
</table>
<p>
<b>Goal</b>:
</p>
<ul class="org-ul">
<li>The station is now installed on the experimental hutch with a glued granite (final location).</li>
<li>The station is identified again.</li>
</ul>
</div>
</div>
<div id="outline-container-org0a36397" class="outline-2">
<h2 id="org0a36397"><span class="section-number-2">2</span> Measurements procedure</h2>
<div class="outline-text-2" id="text-2">
<p>
8 <b>Geophone</b> are used (see table <a href="#org84ab1ff">3</a>):
</p>
<ul class="org-ul">
<li>7 L-28LB geophones (table <a href="#org4eafe61">1</a>)</li>
<li>1 L-4C geophone (table <a href="#org1f04e75">2</a>)</li>
</ul>
<table id="org4eafe61" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<caption class="t-above"><span class="table-number">Table 1:</span> L-28LB Geophone characteristics</caption>
<colgroup>
<col class="org-left" />
<col class="org-right" />
</colgroup>
<tbody>
<tr>
<td class="org-left">Natural Frequency [Hz]</td>
<td class="org-right">4.5</td>
</tr>
<tr>
<td class="org-left">Weight [g]</td>
<td class="org-right">140</td>
</tr>
<tr>
<td class="org-left">Sensitivity [V/(m/s)]</td>
<td class="org-right">31.3</td>
</tr>
</tbody>
</table>
<table id="org1f04e75" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<caption class="t-above"><span class="table-number">Table 2:</span> L-4C Geophone characteristics</caption>
<colgroup>
<col class="org-left" />
<col class="org-right" />
</colgroup>
<tbody>
<tr>
<td class="org-left">Natural Frequency [Hz]</td>
<td class="org-right">1</td>
</tr>
<tr>
<td class="org-left">Weight [g]</td>
<td class="org-right">2150</td>
</tr>
<tr>
<td class="org-left">Sensitivity [V/(m/s)]</td>
<td class="org-right">276.8</td>
</tr>
</tbody>
</table>
<p>
The structure is excited using an <b>instrumented hammer</b> with impacts on (see table <a href="#orgd034fab">4</a>):
</p>
<ul class="org-ul">
<li>Marble</li>
<li>Ty</li>
<li>Hexapod</li>
</ul>
</div>
</div>
<div id="outline-container-org9c8604e" class="outline-2">
<h2 id="org9c8604e"><span class="section-number-2">3</span> Measurement Channels</h2>
<div class="outline-text-2" id="text-3">
<p>
Les fichiers xxx<sub>raw</sub> sont sans traitement dans le domaine temporel (environ 10 impacts par fichier)
</p>
<table id="org84ab1ff" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<caption class="t-above"><span class="table-number">Table 3:</span> Description of each measurement channel</caption>
<colgroup>
<col class="org-right" />
<col class="org-left" />
<col class="org-left" />
<col class="org-left" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-right">Ch. nb</th>
<th scope="col" class="org-left">Element</th>
<th scope="col" class="org-left">Location</th>
<th scope="col" class="org-left">Direction</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-right">1</td>
<td class="org-left">Geophone L-4C</td>
<td class="org-left">Marble</td>
<td class="org-left">Z</td>
</tr>
<tr>
<td class="org-right">2</td>
<td class="org-left">Geophone L-28LB</td>
<td class="org-left">Ty</td>
<td class="org-left">Z</td>
</tr>
<tr>
<td class="org-right">3</td>
<td class="org-left">Geophone L-28LB</td>
<td class="org-left">Tilt</td>
<td class="org-left">Z</td>
</tr>
<tr>
<td class="org-right">4</td>
<td class="org-left">Geophone L-28LB</td>
<td class="org-left">Hexa</td>
<td class="org-left">Z</td>
</tr>
<tr>
<td class="org-right">5</td>
<td class="org-left">Geophone L-28LB</td>
<td class="org-left">Marble</td>
<td class="org-left">H</td>
</tr>
<tr>
<td class="org-right">6</td>
<td class="org-left">Geophone L-28LB</td>
<td class="org-left">TY</td>
<td class="org-left">H</td>
</tr>
<tr>
<td class="org-right">7</td>
<td class="org-left">Geophone L-28LB</td>
<td class="org-left">Tilt</td>
<td class="org-left">H</td>
</tr>
<tr>
<td class="org-right">8</td>
<td class="org-left">Geophone L-28LB</td>
<td class="org-left">Hexa</td>
<td class="org-left">H</td>
</tr>
</tbody>
<tbody>
<tr>
<td class="org-right">9</td>
<td class="org-left">Hammer</td>
<td class="org-left">Variable</td>
<td class="org-left">Variable</td>
</tr>
</tbody>
</table>
</div>
</div>
<div id="outline-container-org3ee1fb7" class="outline-2">
<h2 id="org3ee1fb7"><span class="section-number-2">4</span> Experiments</h2>
<div class="outline-text-2" id="text-4">
<table id="orgd034fab" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<caption class="t-above"><span class="table-number">Table 4:</span> Description of the location of direction of the excitation for each measurement</caption>
<colgroup>
<col class="org-right" />
<col class="org-left" />
<col class="org-left" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-right">Meas. nb</th>
<th scope="col" class="org-left">Location</th>
<th scope="col" class="org-left">Direction</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-right">1</td>
<td class="org-left">Marble</td>
<td class="org-left">Y</td>
</tr>
<tr>
<td class="org-right">2</td>
<td class="org-left">Ty</td>
<td class="org-left">Y</td>
</tr>
<tr>
<td class="org-right">3</td>
<td class="org-left">Hexa</td>
<td class="org-left">Y</td>
</tr>
</tbody>
<tbody>
<tr>
<td class="org-right">4</td>
<td class="org-left">Marble</td>
<td class="org-left">Z</td>
</tr>
<tr>
<td class="org-right">5</td>
<td class="org-left">Ty</td>
<td class="org-left">Z</td>
</tr>
<tr>
<td class="org-right">6</td>
<td class="org-left">Hexa</td>
<td class="org-left">Z</td>
</tr>
</tbody>
<tbody>
<tr>
<td class="org-right">7</td>
<td class="org-left">Marble</td>
<td class="org-left">X</td>
</tr>
<tr>
<td class="org-right">8</td>
<td class="org-left">Ty</td>
<td class="org-left">X</td>
</tr>
<tr>
<td class="org-right">9</td>
<td class="org-left">Hexa</td>
<td class="org-left">X</td>
</tr>
</tbody>
</table>
</div>
</div>
<div id="outline-container-orgaf6691c" class="outline-2">
<h2 id="orgaf6691c"><span class="section-number-2">5</span> Data Analysis</h2>
<div class="outline-text-2" id="text-5">
</div>
<div id="outline-container-orge954440" class="outline-3">
<h3 id="orge954440"><span class="section-number-3">5.1</span> Loading of the data</h3>
<div class="outline-text-3" id="text-5-1">
<div class="org-src-container">
<pre class="src src-matlab">load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/freq_frf.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_hexa_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_hexa_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_hexa_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_marble_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_marble_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_marble_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_ty_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_ty_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_ty_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_hexa_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_hexa_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_hexa_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_marble_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_marble_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_marble_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_ty_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_ty_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_ty_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
</pre>
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<div id="postamble" class="status">
<p class="author">Author: Dehaeze Thomas</p>
<p class="date">Created: 2019-05-14 mar. 23:06</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
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