Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing

Abstract: We examined the compatibility between the visual strength grading and the mechanical properties determined by using nondestructive and destructive test methods in Turkish Black Pine structural timbers. Fifty three structural timber were graded with three different visual strength grading s...

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Autores principales:	Görgün,Hızır Volkan, Dündar,Türker
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2018
Materias:	Longitudinal vibration method mechanical properties Pinus nigra stress wave method visual strength grading.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000100057
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spelling	oai:scielo:S0718-221X20180001000572018-09-25Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testingGörgün,Hızır VolkanDündar,Türker Longitudinal vibration method mechanical properties Pinus nigra stress wave method visual strength grading. Abstract: We examined the compatibility between the visual strength grading and the mechanical properties determined by using nondestructive and destructive test methods in Turkish Black Pine structural timbers. Fifty three structural timber were graded with three different visual strength grading standards. Dynamic modulus of elasticity was determined by longitudinal vibration (MOEdv) and stress wave (MOEds) test methods. The static modulus of elasticity (MOEs) and the modulus of rupture (MOR) of the timbers were determined in structural size. The average dynamic and static modulus of elasticity and modulus of rupture values of the timber sorted into best class of all standards were considerably higher than the lower classes. The differences in the modulus of elasticity values between the strength classes were found significant for British and German standards but insignificant for Turkish standard. However the decrease in modulus of rupture values with decreasing grading class was found significant for all standards. Best compliance between the visual grading class and the dynamic or static modulus of elasticity and modulus of rupture was observed. Strong correlations were found between the dynamic modulus of elasticity and static modulus of elasticity and modulus of rupture. Longitudinal vibration method showed better correlation with the static modulus of elasticity and modulus of rupture than stress wave method.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.20 n.1 20182018-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000100057en10.4067/S0718-221X2018005001501
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Longitudinal vibration method mechanical properties Pinus nigra stress wave method visual strength grading.
spellingShingle	Longitudinal vibration method mechanical properties Pinus nigra stress wave method visual strength grading. Görgün,Hızır Volkan Dündar,Türker Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing
description	Abstract: We examined the compatibility between the visual strength grading and the mechanical properties determined by using nondestructive and destructive test methods in Turkish Black Pine structural timbers. Fifty three structural timber were graded with three different visual strength grading standards. Dynamic modulus of elasticity was determined by longitudinal vibration (MOEdv) and stress wave (MOEds) test methods. The static modulus of elasticity (MOEs) and the modulus of rupture (MOR) of the timbers were determined in structural size. The average dynamic and static modulus of elasticity and modulus of rupture values of the timber sorted into best class of all standards were considerably higher than the lower classes. The differences in the modulus of elasticity values between the strength classes were found significant for British and German standards but insignificant for Turkish standard. However the decrease in modulus of rupture values with decreasing grading class was found significant for all standards. Best compliance between the visual grading class and the dynamic or static modulus of elasticity and modulus of rupture was observed. Strong correlations were found between the dynamic modulus of elasticity and static modulus of elasticity and modulus of rupture. Longitudinal vibration method showed better correlation with the static modulus of elasticity and modulus of rupture than stress wave method.
author	Görgün,Hızır Volkan Dündar,Türker
author_facet	Görgün,Hızır Volkan Dündar,Türker
author_sort	Görgün,Hızır Volkan
title	Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing
title_short	Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing
title_full	Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing
title_fullStr	Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing
title_full_unstemmed	Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing
title_sort	strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing
publisher	Universidad del Bío-Bío
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000100057
work_keys_str_mv	AT gorgunh305z305rvolkan strengthgradingofturkishblackpinestructuraltimberbyvisualevaluationandnondestructivetesting AT dundarturker strengthgradingofturkishblackpinestructuraltimberbyvisualevaluationandnondestructivetesting
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Strength grading of turkish black pine structural timber by visual evaluation and nondestructive testing

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