Comparison of stiffness parameters of two kinds of date palm using nondestructive test

The goal of this study was to determine the modulus of elasticity and modulus of rapture of two kinds of date palm (Khasi and Hajmohammadi) using static bending and dynamic (flexural vibration) techniques. To reduce the difference between static and dynamic stiffness values, the static bending modul...

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Autores principales:	Mohamad ali Sadatnia, noshin sattari, mehran roohnia, mohsen bahmani
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2018
Materias:	Date palm POPLAR modified modulus of elasticity modulus of rapture Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/74057ef653a94b3eb0cd0ac2cf88a253
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spelling	oai:doaj.org-article:74057ef653a94b3eb0cd0ac2cf88a2532021-12-02T02:01:57ZComparison of stiffness parameters of two kinds of date palm using nondestructive test1735-09132383-112X10.22092/ijwpr.2018.110641.1411https://doaj.org/article/74057ef653a94b3eb0cd0ac2cf88a2532018-03-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_115164_95b60b2d32f0443b277e6848916b3e78.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XThe goal of this study was to determine the modulus of elasticity and modulus of rapture of two kinds of date palm (Khasi and Hajmohammadi) using static bending and dynamic (flexural vibration) techniques. To reduce the difference between static and dynamic stiffness values, the static bending modulus of elasticity was modified by taking into account the value of the shear deflection. In addition to, for better understanding of the mechanical properties of date palm, values were compared with those measured for poplar samples. The results showed that, in Khasi the mean values of the modulus of elasticity obtained by flexural vibration, the static modulus of elasticity, the modified static modulus of elasticity and as well as the modulus of rapture were 47, 67,68 and 38% less than those measured for Hajmohammadi respectively. In comparing with date palm, values measured for poplar samples were more pronounced. The difference between dynamic and static values of modulus recorded for Khasi, Hajmohammadi and poplar samples were 63, 40 and 19% respectively. After modification of the static values, the difference was reduced in to 3% for Khasi, 6% for Hajmohammadi and 7 % for poplar experimental samples. Finally the significant correlation coefficients were found between the static and the dynamic modulus of elasticity for both two kinds of date palm.Mohamad ali Sadatnianoshin sattarimehran roohniamohsen bahmaniRegional Information Center for Science and Technology (RICeST)articleDate palmPOPLARmodified modulus of elasticitymodulus of raptureForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 33, Iss 1, Pp 133-141 (2018)
institution	DOAJ
collection	DOAJ
language	FA
topic	Date palm POPLAR modified modulus of elasticity modulus of rapture Forestry SD1-669.5
spellingShingle	Date palm POPLAR modified modulus of elasticity modulus of rapture Forestry SD1-669.5 Mohamad ali Sadatnia noshin sattari mehran roohnia mohsen bahmani Comparison of stiffness parameters of two kinds of date palm using nondestructive test
description	The goal of this study was to determine the modulus of elasticity and modulus of rapture of two kinds of date palm (Khasi and Hajmohammadi) using static bending and dynamic (flexural vibration) techniques. To reduce the difference between static and dynamic stiffness values, the static bending modulus of elasticity was modified by taking into account the value of the shear deflection. In addition to, for better understanding of the mechanical properties of date palm, values were compared with those measured for poplar samples. The results showed that, in Khasi the mean values of the modulus of elasticity obtained by flexural vibration, the static modulus of elasticity, the modified static modulus of elasticity and as well as the modulus of rapture were 47, 67,68 and 38% less than those measured for Hajmohammadi respectively. In comparing with date palm, values measured for poplar samples were more pronounced. The difference between dynamic and static values of modulus recorded for Khasi, Hajmohammadi and poplar samples were 63, 40 and 19% respectively. After modification of the static values, the difference was reduced in to 3% for Khasi, 6% for Hajmohammadi and 7 % for poplar experimental samples. Finally the significant correlation coefficients were found between the static and the dynamic modulus of elasticity for both two kinds of date palm.
format	article
author	Mohamad ali Sadatnia noshin sattari mehran roohnia mohsen bahmani
author_facet	Mohamad ali Sadatnia noshin sattari mehran roohnia mohsen bahmani
author_sort	Mohamad ali Sadatnia
title	Comparison of stiffness parameters of two kinds of date palm using nondestructive test
title_short	Comparison of stiffness parameters of two kinds of date palm using nondestructive test
title_full	Comparison of stiffness parameters of two kinds of date palm using nondestructive test
title_fullStr	Comparison of stiffness parameters of two kinds of date palm using nondestructive test
title_full_unstemmed	Comparison of stiffness parameters of two kinds of date palm using nondestructive test
title_sort	comparison of stiffness parameters of two kinds of date palm using nondestructive test
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2018
url	https://doaj.org/article/74057ef653a94b3eb0cd0ac2cf88a253
work_keys_str_mv	AT mohamadalisadatnia comparisonofstiffnessparametersoftwokindsofdatepalmusingnondestructivetest AT noshinsattari comparisonofstiffnessparametersoftwokindsofdatepalmusingnondestructivetest AT mehranroohnia comparisonofstiffnessparametersoftwokindsofdatepalmusingnondestructivetest AT mohsenbahmani comparisonofstiffnessparametersoftwokindsofdatepalmusingnondestructivetest
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Comparison of stiffness parameters of two kinds of date palm using nondestructive test

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