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Statements

Subject Item
n2:RIV%2F62156489%3A43410%2F13%3A00198352%21RIV14-MSM-43410___
rdf:type
n4:Vysledek skos:Concept
rdfs:seeAlso
http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/3549
dcterms:description
The aim of this paper was to predict the static bending modulus of elasticity (MOES) and modulus of rupture (MOR) of Scots pine (Pinus sylvestris L.) wood using three nondestructive techniques. The mean values of the dynamic modulus of elasticity based on flexural vibration (MOEF), longitudinal vibration (MOELV), and indirect ultrasonic (MOEUS) were 13.8, 22.3, and 30.9 % higher than the static modulus of elasticity (MOES), respectively. The reduction of this difference, taking into account the shear deflection effect in the output values for static bending modulus of elasticity, was also discussed in this study. The three dynamic moduli of elasticity correlated well with the static MOES and MOR; correlation coefficients ranged between 0.68 and 0.96. The correlation coefficients between the dynamic moduli and MOES were higher than those between the dynamic moduli and MOR. The highest correlation between the dynamic moduli and static bending properties was obtained by the flexural vibration technique in comparison with longitudinal vibration and indirect ultrasonic techniques. Results showed that there was no obvious relationship between the density and the acoustic wave velocity that was obtained from the longitudinal vibration and ultrasonic techniques. The aim of this paper was to predict the static bending modulus of elasticity (MOES) and modulus of rupture (MOR) of Scots pine (Pinus sylvestris L.) wood using three nondestructive techniques. The mean values of the dynamic modulus of elasticity based on flexural vibration (MOEF), longitudinal vibration (MOELV), and indirect ultrasonic (MOEUS) were 13.8, 22.3, and 30.9 % higher than the static modulus of elasticity (MOES), respectively. The reduction of this difference, taking into account the shear deflection effect in the output values for static bending modulus of elasticity, was also discussed in this study. The three dynamic moduli of elasticity correlated well with the static MOES and MOR; correlation coefficients ranged between 0.68 and 0.96. The correlation coefficients between the dynamic moduli and MOES were higher than those between the dynamic moduli and MOR. The highest correlation between the dynamic moduli and static bending properties was obtained by the flexural vibration technique in comparison with longitudinal vibration and indirect ultrasonic techniques. Results showed that there was no obvious relationship between the density and the acoustic wave velocity that was obtained from the longitudinal vibration and ultrasonic techniques.
dcterms:title
Evaluation of stiffness and strength of Scots pine wood using resonance frequency and ultrasonic techniques Evaluation of stiffness and strength of Scots pine wood using resonance frequency and ultrasonic techniques
skos:prefLabel
Evaluation of stiffness and strength of Scots pine wood using resonance frequency and ultrasonic techniques Evaluation of stiffness and strength of Scots pine wood using resonance frequency and ultrasonic techniques
skos:notation
RIV/62156489:43410/13:00198352!RIV14-MSM-43410___
n4:predkladatel
n6:orjk%3A43410
n5:aktivita
n18:Z n18:P
n5:aktivity
P(EE2.3.20.0269), Z(MSM6215648902)
n5:cisloPeriodika
2
n5:dodaniDat
n15:2014
n5:domaciTvurceVysledku
n17:2416220 n17:5354684 Hassan, Khaled Taha Soliman
n5:druhVysledku
n21:J
n5:duvernostUdaju
n14:S
n5:entitaPredkladatele
n20:predkladatel
n5:idSjednocenehoVysledku
73663
n5:idVysledku
RIV/62156489:43410/13:00198352
n5:jazykVysledku
n8:eng
n5:klicovaSlova
Nondestructive testing; Ultrasonic; Flexural vibration; Density; Longitudinal vibration
n5:klicoveSlovo
n7:Ultrasonic n7:Nondestructive%20testing n7:Flexural%20vibration n7:Density n7:Longitudinal%20vibration
n5:kodStatuVydavatele
US - Spojené státy americké
n5:kontrolniKodProRIV
[96936A444A86]
n5:nazevZdroje
BioResources
n5:obor
n11:BI
n5:pocetDomacichTvurcuVysledku
3
n5:pocetTvurcuVysledku
3
n5:projekt
n19:EE2.3.20.0269
n5:rokUplatneniVysledku
n15:2013
n5:svazekPeriodika
8
n5:tvurceVysledku
Tippner, Jan Hassan, Khaled Taha Soliman Horáček, Petr
n5:wos
315386400015
n5:zamer
n13:MSM6215648902
s:issn
1930-2126
s:numberOfPages
12
n16:organizacniJednotka
43410