An Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams

Due to considerable influence of shear deflection and rotary motion, the modulus of elasticity is hardly obtainable in fixed-free flexurally-excited (cantilever) beams. For isotropic materials, Timoshenko has proposed a set of curves to correct the fixed-free modal frequencies as the radius of gyrat...

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Autor principal:	Mehran Roonia
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2014
Materias:	assessment cantilever beam flexural nondestructive technique (NDT) Timoshenko vibration wood Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/442a620bc0d14f538368045ad1597471
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spelling	oai:doaj.org-article:442a620bc0d14f538368045ad15974712021-12-02T06:29:40ZAn Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams10.5552/drind.2014.12290012-67721847-1153https://doaj.org/article/442a620bc0d14f538368045ad15974712014-04-01T00:00:00Zhttp://hrcak.srce.hr/file/175766https://doaj.org/toc/0012-6772https://doaj.org/toc/1847-1153Due to considerable influence of shear deflection and rotary motion, the modulus of elasticity is hardly obtainable in fixed-free flexurally-excited (cantilever) beams. For isotropic materials, Timoshenko has proposed a set of curves to correct the fixed-free modal frequencies as the radius of gyration and free length; however, its performance for wood was not sufficiently conclusive. In this study, rectangular beams of pine wood were tested in a fixed-free condition, altering the free length to height ratios in a proper extent and comparing them to their reference free-free data in terms of natural frequency and dynamic modulus of elasticity shifts. The equality of two pairs of fixed-free versus free-free data, for both frequency and dynamic modulus, was significantly confirmed. The correlation coefficient between experimental and calculated fixed-free frequencies was high enough, and however the correlation coefficient of the modulus of elasticity was rather low.Mehran RooniaUniversity of Zagreb, Faculty of Forestry and Wood Technologyarticleassessmentcantilever beamflexuralnondestructive technique (NDT)TimoshenkovibrationwoodForestrySD1-669.5ENDrvna Industrija, Vol 65, Iss 1, Pp 3-10 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	assessment cantilever beam flexural nondestructive technique (NDT) Timoshenko vibration wood Forestry SD1-669.5
spellingShingle	assessment cantilever beam flexural nondestructive technique (NDT) Timoshenko vibration wood Forestry SD1-669.5 Mehran Roonia An Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams
description	Due to considerable influence of shear deflection and rotary motion, the modulus of elasticity is hardly obtainable in fixed-free flexurally-excited (cantilever) beams. For isotropic materials, Timoshenko has proposed a set of curves to correct the fixed-free modal frequencies as the radius of gyration and free length; however, its performance for wood was not sufficiently conclusive. In this study, rectangular beams of pine wood were tested in a fixed-free condition, altering the free length to height ratios in a proper extent and comparing them to their reference free-free data in terms of natural frequency and dynamic modulus of elasticity shifts. The equality of two pairs of fixed-free versus free-free data, for both frequency and dynamic modulus, was significantly confirmed. The correlation coefficient between experimental and calculated fixed-free frequencies was high enough, and however the correlation coefficient of the modulus of elasticity was rather low.
format	article
author	Mehran Roonia
author_facet	Mehran Roonia
author_sort	Mehran Roonia
title	An Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams
title_short	An Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams
title_full	An Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams
title_fullStr	An Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams
title_full_unstemmed	An Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams
title_sort	estimation of dynamic modulus of elasticity in cantilever flexural timber beams
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2014
url	https://doaj.org/article/442a620bc0d14f538368045ad1597471
work_keys_str_mv	AT mehranroonia anestimationofdynamicmodulusofelasticityincantileverflexuraltimberbeams AT mehranroonia estimationofdynamicmodulusofelasticityincantileverflexuraltimberbeams
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An Estimation of Dynamic Modulus of Elasticity in Cantilever Flexural Timber Beams

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