<?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>1870-3542</journal-id>
<journal-title><![CDATA[Revista mexicana de física E]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fís. E]]></abbrev-journal-title>
<issn>1870-3542</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-35422016000200125</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Interferometria speckle para evaluar la flexión de una barra de aluminio]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montalvo]]></surname>
<given-names><![CDATA[R.A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Asmad]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Choque]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baldwin]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Mayor de San Marcos Facultad de Ciencias Físicas ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Pontificia Universidad Católica del Perú Departamento de Ciencias ]]></institution>
<addr-line><![CDATA[ Lima]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>62</volume>
<numero>2</numero>
<fpage>125</fpage>
<lpage>134</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-35422016000200125&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-35422016000200125&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-35422016000200125&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[En un interferómetro DSPI (Digital Speckle Pattern Interferometry) se produce la superposición de dos frentes de onda de luz coherente provenientes de dos superficies, el primero desde una barra de aluminio que se analiza y el segundo desde un vidrio esmerilado que se considera como referencia. Aquí, estudiamos la deformación de una barra de aluminio de dimensiones 15.20 mm x 158.00 mm x 0.72 mm, en la que un extremo está firmemente anclado a una base y el otro extremo está sujetado a un contenedor donde se aplican diferentes cargas mecánicas que generan sendos esfuerzos de flexión. Los correlogramas son adquiridos digitalmente mediante un sistema de visión, antes y después de aplicar las diferentes cargas a la barra, estos correlogramas representan las diferencias de fase de los haces provenientes de las dos superficies, que permiten evaluar las deformaciones de la barra producidas por los esfuerzos mecánicos aplicados. Se aplican algoritmos para determinar la deformación de la barra y finalmente deducir el módulo de Young.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[In a Digital Speckle Pattern Interferometry, DSPI, a two light coherent wavefront superposition from two surfaces is produced; the first one from the object under study, the aluminum bar, and the other from the reference ground glass. Here, we study the aluminum bar deformation with dimensions of 15.20 mm x 158.00 mm x 0.72 mm, with an extreme fixed in a base and the other extreme subjected to a container in which diferent mechanical charges are applied generating a serie of flexion stresses. The correlograms are digitally acquired by a vision system, before and after, different loads to bar extreme are applied, these correlograms represent the phase differences of the beams from the two surfaces, that permit us to determine the bar deformations produced by applied mechanical stresses. Algorithms are applied to determine the bar deformation and the Young modulus.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Interferometria speckle]]></kwd>
<kwd lng="es"><![CDATA[tecnica DSPI]]></kwd>
<kwd lng="es"><![CDATA[modulo de Young]]></kwd>
<kwd lng="en"><![CDATA[Speckle interferometry]]></kwd>
<kwd lng="en"><![CDATA[DSPI technique]]></kwd>
<kwd lng="en"><![CDATA[Young modulus]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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