2012
DOI: 10.1515/hf-2011-0186
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Changes in viscoelastic vibrational properties between compression and normal wood: roles of microfibril angle and of lignin

Abstract: This study aims at better understanding the respective influences of specific gravity (1), microfibril angle (MFA), and cell-wall matrix polymers on viscoelastic vibrational properties of wood in axial direction. The wide variations of properties between normal wood (NW) and compression wood (CW) are in focus. Three young bent trees (Picea abies, Pinus sylvestris and Pinus pinaster) that recovered verticality were sampled. Several observed differences between NW and CW were highly significant in terms of anato… Show more

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Cited by 39 publications
(38 citation statements)
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“…The difference can rely on the relationship between the specific modulus and MFA (Fig. 3) based on Bremaud et al (2013). These experimental results show a significant dispersion in the 10°to 20°range.…”
Section: Discussionmentioning
confidence: 78%
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“…The difference can rely on the relationship between the specific modulus and MFA (Fig. 3) based on Bremaud et al (2013). These experimental results show a significant dispersion in the 10°to 20°range.…”
Section: Discussionmentioning
confidence: 78%
“…According to Bremaud et al (2013), there exists a strong relationship between the dynamic specific modulus of elasticity and the MFA (Fig. 3).…”
Section: Specific Modulus Of Elasticitymentioning
confidence: 99%
See 1 more Smart Citation
“…(Table 5 and 6), which is higher than the individual effects of MFA or of grain angle on these properties. It needs to be noted, though, that such statistical analysis is not sufficient as it is based on linear relations, while it is known that the dependence of mechanical properties on MFA or on grain angle is not of a linear form (Obataya et al 2000;Brémaud et al 2011Brémaud et al , 2013. Further, although w and MFA show significant correlations with the vibrational properties in the L direction; in contrast, in the R direction, the correlation between w and MFA with E' R /ρ or tanδ R is low (Table 4).…”
Section: Discussionmentioning
confidence: 99%
“…It is also determined that the tanδ L in more wavy wood is higher than the standard relationship (Ono & Norimoto 1983) which is followed by the less wavy specimens. It is suggested to conduct more research comparing the vibrational properties between wavy-figured wood with various kinds of anatomical features (either by extending the sampling on sycamore maple, or by including other species to allow more variations in the different types of cells), and maybe also to observe in parallel possible chemical variations as affecting factors (Longui et al 2012;Brémaud et al 2013). …”
Section: Discussionmentioning
confidence: 99%