<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532021000200032</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v88n217.91879</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Use of unmanned aircraft systems for bridge inspection: a review]]></article-title>
<article-title xml:lang="es"><![CDATA[Uso de sistemas de aeronaves no tripuladas para la inspección de puentes: una revisión]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aldana-Rodríguez]]></surname>
<given-names><![CDATA[Didier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ávila-Granados]]></surname>
<given-names><![CDATA[Diego Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villalba-Vidales]]></surname>
<given-names><![CDATA[Jorge Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Fundación Universitaria los Libertadores Facultad de Ingeniería y Ciencias Básicas ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Escuela de Aviación del Ejército Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>88</volume>
<numero>217</numero>
<fpage>32</fpage>
<lpage>41</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532021000200032&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532021000200032&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532021000200032&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This review describes the use of Unmanned Aircraft Systems (UAS) for bridge inspection, with an emphasis on Multi-rotor UAS. It depicts the different levels of automation and autonomy during UAS operation and what levels are achieved during inspections. A description of the payload of UAS consisting of the equipment required to acquire data and images is included. It also contains a compendium of the techniques used to create models from images in order to detect failures and perform Structural Health Monitoring (SHM) through techniques, such as: 3D reconstruction, infrared thermography, Structure From Motion (SFM), Convolutional Neural Network (CNN) and others. The software required to apply the mentioned techniques is also mentioned. It subsequently explains the generation of mathematical models to characterize the multirotor and generate efficient trajectories. Finally, the review concludes by describing the operational limitations of UAS and future challenges.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Esta revisión describe el uso de los Unmanned Aircraft Systems (UAS) para la inspección de puentes, haciendo énfasis en los UAS Multirrotor. Relaciona los diferentes niveles de automatización y autonomía durante la operación de los UAS y cuáles de esos niveles se logran durante la inspección. Hay una descripción de la carga paga del UAS compuesta por los equipos requeridos para adquirir datos e imágenes. Se incluye un compendio de las técnicas que se usan para la creación de modelos a partir de imágenes, con el propósito de detectar fallas y realizar Structural Health Monitoring (SHM) mediante técnicas como: reconstrucción 3D, termografía infrarroja, Structure From Motion (SFM), Convolutional Neural Network (CNN) entre otras, así como el software requerido para aplicarlas. Posteriormente explica la generación de modelos matemáticos para caracterizar los multirrotores y generar trayectorias eficientes. Finaliza describiendo las limitaciones operacionales de los UAS y los retos futuros.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[bridges]]></kwd>
<kwd lng="en"><![CDATA[unmanned aircraft system]]></kwd>
<kwd lng="en"><![CDATA[3D reconstruction]]></kwd>
<kwd lng="en"><![CDATA[infrared thermography]]></kwd>
<kwd lng="en"><![CDATA[structural health monitoring]]></kwd>
<kwd lng="es"><![CDATA[puentes]]></kwd>
<kwd lng="es"><![CDATA[sistema de aeronave no tripulada]]></kwd>
<kwd lng="es"><![CDATA[reconstrucción 3D]]></kwd>
<kwd lng="es"><![CDATA[termografía infrarroja]]></kwd>
<kwd lng="es"><![CDATA[monitoreo de salud estructural]]></kwd>
</kwd-group>
</article-meta>
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