<?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>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822019000300087</article-id>
<article-id pub-id-type="doi">10.18845/tm.v32i2.4482</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Desarrollo de un sistema automatizado de escaneo por radiación gamma]]></article-title>
<article-title xml:lang="en"><![CDATA[Development of an automatized system for a gamma scanning technique]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Méndez]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Meneses-Guzmán]]></surname>
<given-names><![CDATA[Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chinè-Polito]]></surname>
<given-names><![CDATA[Bruno]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pereira-Arroyo]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica  ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería en Producción Industrial ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica  ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería Electrónica ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<volume>32</volume>
<numero>3</numero>
<fpage>87</fpage>
<lpage>98</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822019000300087&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822019000300087&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822019000300087&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las técnicas de medición por ensayos no destructivos han demostrado ser una poderosa herramienta en el estudio y caracterización de materiales. Este trabajo presenta el desarrollo de un sistema automatizado para la medición de la atenuación de radiación gamma en los materiales. Primero, se describe el proceso de diseño de los elementos electromecánicos y el sistema de control automático, seguido de su implementación. Los resultados muestran la capacidad y precisión mecánica obtenidas para el sistema desarrollado. En particular la resolución del motor y capacidad de recorrido del robot son respectivamente de 8 &#956;m para el movimiento horizontal con un movimiento de hasta 54 cm bidireccional y 4 &#956;m para el movimiento vertical con un movimiento de hasta 57 cm bidireccional. Además, el sistema permite una rotación de las muestras con un recorrido de 360° unidireccional. Se comprueba estadísticamente la sensibilidad del sistema para detectar cambios locales en el espesor del material, evaluando los periodos de muestreo para obtener una medición con precisión. Se determina el error relativo de las mediciones, analizando posibles causas y soluciones.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Non-destructive testing techniques have proven to be a powerful tool in the study and characterization of materials. This work presents the development of an automated measurement system based on the attenuation of gamma radiation for the study of materials. First, we described the design process of the electromechanical elements and the automatic control system, followed by its implementation. The results show the capacity and mechanical accuracy of the system. The resolution of the motor and the displacement capacity of the robot are 8 &#956;m for the horizontal movement with maximum carriage travel of bi-directional 54 cm and 4 &#956;m for vertical movement, with maximum carriage travel of bi-directional 57 cm. The system allows for a sample rotation, being the angular trajectory of 360 ° with unidirectional travel. The sensitivity of the system for detecting specific changes in the thickness of the material is verified statistically, also evaluating the sampling periods to obtain a measurement with precision. The relative error of the measurements is determined and its causes and solutions are discussed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Automatización]]></kwd>
<kwd lng="es"><![CDATA[Ensayos no Destructivos]]></kwd>
<kwd lng="es"><![CDATA[Escaneo por Radiación Gamma.]]></kwd>
<kwd lng="en"><![CDATA[Automation]]></kwd>
<kwd lng="en"><![CDATA[Non-Destructive Testings]]></kwd>
<kwd lng="en"><![CDATA[Gamma Scanning]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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