Maderas. Ciencia y Tecnología http://revistas.ubiobio.cl/index.php/MCT <p>&nbsp;</p> <p>&nbsp;</p> <table style="margin-top: -250px; width: 1025px; height: 672px;"> <tbody> <tr> <td style="width: 30%;"><strong><span style="color: #ffffff; text-align: center;"><img src="/public/site/images/visepul/cover-3d-21(4).png"></span></strong></td> <td style="width: 30%;"> <div class="issueCoverDescription"> <div class="description"> <p><img style="width: 30px;" src="http://revistas.ubiobio.cl/public/site/images/visepul/pdf_icon_copy6.png" alt=""> <a href="http://revistas.ubiobio.cl/index.php/MCT/issue/view/290">Full Text PDF</a></p> <p><img style="width: 30px;" src="http://revistas.ubiobio.cl/public/site/images/visepul/e-book_full1.png" alt=""> <a href="http://revistas.ubiobio.cl/revistamadera/e-book/21.4-2019/">e-book version</a></p> <p><a href="http://revistas.ubiobio.cl/revistamadera/e-book/18.2-2016/mobile/"><img style="width: 30px;" src="http://revistas.ubiobio.cl/public/site/images/visepul/mobile2.png" alt=""></a> <a href="http://revistas.ubiobio.cl/revistamadera/e-book/21.4-2019/mobile/html5forpc.html">mobile version</a></p> <p><img style="width: 30px;" src="http://revistas.ubiobio.cl/public/site/images/visepul/2000px-Text-xml.svg_.png" alt="">&nbsp; <a href="https://scielo.conicyt.cl/scielo.php?script=sci_issuetoc&amp;pid=0718-221X20190004&amp;lng=es&amp;nrm=iso">XML</a></p> </div> </div> </td> <td style="width: 30%;"> <p>Editor-in-Chief: <a href="mailto:ananias@ubiobio.cl" target="_self">Rubén A. Ananias</a><span id="result_box" class="short_text" lang="en"><br>Technical Editor</span>: <a href="mailto:lsalvo@ubiobio.cl">Linette Salvo S.<br></a>Digital Manager: <a href="mailto:%20vsepulveda@ubiobio.cl">Victor Sepúlveda V.</a><br>E-mail :<a href="mailto:remaderal@ubiobio.cl">remadera@ubiobio.cl</a><br>E-mail :<a href="mailto:remadera.journal@gmail.com">remadera.journal@gmail.com</a><br><br>2018 Journal Impact Factors:<br> 2-years: 1.4<br>5-years: 1.5<br> Frequency: 4 issues by year.<br>January, April, July, October<br>ISSN 0718-221X online version.<br>ISSN 0717-3644 printed version.</p> </td> </tr> </tbody> </table> en-US ananias@ubiobio.cl (Ruben A. Ananias.) vsepulveda@ubiobio.cl (Victor Sepulveda Villarroel) Wed, 01 Apr 2020 00:00:00 -0300 OJS 3.1.0.1 http://blogs.law.harvard.edu/tech/rss 60 Nondestructive testing used on timber in spain: A literature review http://revistas.ubiobio.cl/index.php/MCT/article/view/3929 <p>Nondestructive testing (NDT) includes several highly efficient techniques for the estimation of the physical and mechanical properties of structural timber. Apart from visual grading, scientific research using Nondestructive testing on timber has been used in Spain since the 1990s. Nondestructive testing can be used for two different purposes: timber grading and the assessment of existing timber structures. The most common devices used in Spain are portable ones based on ultrasound, stress waves, vibration and probing techniques. Many statistical linear models for estimating the mechanical properties of new sawn timber and timber from existing structures have been proposed. Furthermore, several factors that affect Nondestructive testing measurements have been studied (moisture content, temperature, specimen dimensions, sensors position-grain angle…) and adjustment factors have also been proposed. Species have been characterized for visual grading standards from the 1980s to date. The large number of research works using different species, devices and procedures shows the need of homogenization and standardization of Nondestructive testing use. This paper presents a review of research works using Nondestructive testing on timber in Spain, in order to add to knowledge, elucidate the concepts to unify Nondestructive testing used and promote research group collaboration in the near future.</p> Daniel F. Llana, Guillermo Íñiguez-González, M. Rafael Díez, Francisco Arriaga ##submission.copyrightStatement## http://revistas.ubiobio.cl/index.php/MCT/article/view/3929 Wed, 01 Apr 2020 00:00:00 -0300