<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2003000600011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Medición del módulo de Young en el hule látex usando ESPI]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rayas]]></surname>
<given-names><![CDATA[J.A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Vera]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Centro de Investigaciones en Optica A.C  ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Centro de Investigaciones en Optica A.C  ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>México</country>
</aff>
<aff id="A03">
<institution><![CDATA[,Centro de Investigaciones en Optica A.C  ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2003</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2003</year>
</pub-date>
<volume>49</volume>
<numero>6</numero>
<fpage>555</fpage>
<lpage>564</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2003000600011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2003000600011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2003000600011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Es conocido que el módulo de elasticidad o módulo de Young relaciona el esfuerzo con la deformación unitaria que experimenta un objeto al ser sometido a cargas externas. En este trabajo se presenta la implementación de la interferometría electrónica de patrones de moteado (ESPI) como técnica para medir las deformaciones que sufre el hule látex al ser sometido a cargas de tensión. Aunado a la medición de las cargas tensionantes (mediante un dinamómetro digital), se determina el módulo de Young del objeto bajo prueba. El valor determinado mediante la técnica ESPI es comparado con uno obtenido mediante un ensayo a tensión realizado en un dispositivo diseñado y construido en el laboratorio (el cual es equivalente a una máquina de ensayos comercial); corroborando así la veracidad de la técnica ESPI usada como extensómetro interferométrico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[It is well know that the module of elasticity or Young's module relates the stress to the strain that suffers a object, which is yielded to external loads. In this work we show the implementation of the Electronic Speckle Pattern Interferometry (ESPI) as a technique to measure deformations on a piece of latex when it is subjected to external loads. Along with the measurement of tension loads (by means of a digital dynamometer), we determine the Young's module of the object under test. The value determined by using the ESPI technique is compared with that obtained in a device designed and constructed in our laboratory (which is equivalent to a commercial testing machine). It is demonstrated the veracity of the ESPI technique applied as an interferometric extensometer.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Metrología óptica]]></kwd>
<kwd lng="es"><![CDATA[interferometría de moteado]]></kwd>
<kwd lng="es"><![CDATA[constantes elásticas]]></kwd>
<kwd lng="en"><![CDATA[Optical metrology]]></kwd>
<kwd lng="en"><![CDATA[speckle interferometry]]></kwd>
<kwd lng="en"><![CDATA[elastic constants]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Instrumentaci&oacute;n</font></p>     <p align="justify">&nbsp;</p>      <p align="center"><font face="verdana" size="4"><b>Medici&oacute;n del m&oacute;dulo de Young en el hule l&aacute;tex usando ESPI</b></font></p>      <p align="center">&nbsp;</p>     <p align="center"><font face="verdana" size="2"><b>J.A. Rayas*, R. Rodr&iacute;guez&#45;Vera** y A. Mart&iacute;nez***</b></font>        <p align="center">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><i>* Centro de Investigaciones en &Oacute;ptica, A.C., Apartado Postal 1&#45;948, 37150 Le&oacute;n, Gto. M&eacute;xico,</i> e&#45;mail: <a href="mailto:jrayas@cio.mx">jrayas@cio.mx</a>.</font></p>       <p align="justify"><font face="verdana" size="2"><i>** Centro de Investigaciones en &Oacute;ptica, A.C., Apartado Postal 1&#45;948, 37150 Le&oacute;n, Gto. M&eacute;xico</i>, e&#45;mail: <a href="mailto:rarove@cio.mxy">rarove@cio.mxy</a></font></p>       <p align="justify"><font face="verdana" size="2"><i>*** Centro de Investigaciones en &Oacute;ptica, A.C., Apartado Postal 1&#45;948, 37150 Le&oacute;n, Gto. M&eacute;xico,</i> e&#45;mail: <a href="mailto:amalia@cio.mx">amalia@cio.mx</a></font></p>      <p align="justify">&nbsp;</p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Recibido el 28 de abril de 2003.     <br>   Aceptado el 18 de julio de 2003.</font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>      <p align="justify"><font face="verdana" size="2">Es conocido que el m&oacute;dulo de elasticidad o m&oacute;dulo de Young relaciona el esfuerzo con la deformaci&oacute;n unitaria que experimenta un objeto al ser sometido a cargas externas. En este trabajo se presenta la implementaci&oacute;n de la interferometr&iacute;a electr&oacute;nica de patrones de moteado (ESPI) como t&eacute;cnica para medir las deformaciones que sufre el hule l&aacute;tex al ser sometido a cargas de tensi&oacute;n. Aunado a la medici&oacute;n de las cargas tensionantes (mediante un dinam&oacute;metro digital), se determina el m&oacute;dulo de Young del objeto bajo prueba. El valor determinado mediante la t&eacute;cnica ESPI es comparado con uno obtenido mediante un ensayo a tensi&oacute;n realizado en un dispositivo dise&ntilde;ado y construido en el laboratorio (el cual es equivalente a una m&aacute;quina de ensayos comercial); corroborando as&iacute; la veracidad de la t&eacute;cnica ESPI usada como extens&oacute;metro interferom&eacute;trico.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> Metrolog&iacute;a &oacute;ptica; interferometr&iacute;a de moteado; constantes el&aacute;sticas.</font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>Abstarct</b></font></p>      <p align="justify"><font face="verdana" size="2">It is well know that the module of elasticity or Young's module relates the stress to the strain that suffers a object, which is yielded to external loads. In this work we show the implementation of the Electronic Speckle Pattern Interferometry (ESPI) as a technique to measure deformations on a piece of latex when it is subjected to external loads. Along with the measurement of tension loads (by means of a digital dynamometer), we determine the Young's module of the object under test. The value determined by using the ESPI technique is compared with that obtained in a device designed and constructed in our laboratory (which is equivalent to a commercial testing machine). It is demonstrated the veracity of the ESPI technique applied as an interferometric extensometer.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Optical metrology; speckle interferometry; elastic constants.</font></p>      ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">PACS: 06.20; 07.60.Ly; 62.20.Dc</font></p>       <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v49n6/v49n6a11.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>Agradecimientos</b></font></p>       <p align="justify"><font face="verdana" size="2">Los autores agradecen a CONCYTEG (03&#45;04&#45;K118&#45;039, anexo 4) y a CONACYT (33106&#45;E) por su apoyo econ&oacute;mico. Tambi&eacute;n se agradece al M.C. Ren&eacute; Camacho sus aportaciones al presente trabajo.</font></p>      <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>Referencias bibliogr&aacute;ficas</b></font></p>      <!-- ref --><p align="justify"><font face="verdana" size="2">1. Instron Corporation, <i>Guide to Advanced Materials Testing</i> (Canton Massachusetts, 1997).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8297735&pid=S0035-001X200300060001100001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      ]]></body>
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