Bending Characteristics of Multilayered Soft and Hardwood Materials

Svoboda, Tomáš; Ruman, Daniel; Gaff, Milan; Gašparík, Miroslav; Miftieva, Elena; Dundek, Ľubomír

doi:10.15376/biores.10.4.8461-8473

Cited by 9 publications

(8 citation statements)

References 10 publications

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“…Slicing (longitudinal joint), connecting (corner joint), and miscellaneous joint types (Sumiyoshi and Matsui 1989) all have different effects. The use of the proper joint type simplifies the structure and boosts its integrity (Sabareth 2014;Svoboda et al 2015;Kubš et al 2016). Many factors have to be considered when choosing the joint type (Sumiyoshi and Matsui 1989;Kvietková et al 2015a,b).…”

Section: Introductionmentioning

confidence: 99%

Effect of wood species, adhesive type, and annual ring directions on the stiffness of rail to leg mortise and tenon furniture joints

Záborský

Borůvka

Kašičková

et al. 2017

BioRes

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The effects of selected factors, wood species (Fagus sylvatica L. and Picea abies L.), type of joint (haunched mortise and tenon, and haunched dovetail mortise and tenon), tenon thickness (one-third and half-joint thickness), type of adhesive (polyvinyl acetate and polyurethane adhesive), loading type (compressive and tensile), and direction of the annual rings were evaluated relative to the elastic stiffness. The testing samples were loaded by bending moment with tensile and compressive forces in the angular plane. The wood species, type of joint, tenon dimension, and type of adhesive all had a statistically significant effect on the elastic stiffness. However, the interaction of those factors was statistically insignificant. The loading type and direction of the annual rings did not have a significant effect on the elastic stiffness. For spruce, the use of mortise and tenon with a toothed feather (MTTF) was found to be disadvantageous, whereas the use of a toothed feather was favorable for beech. Half thickness of the joint was always an advantage, such that the stiffness increased. For spruce joints, the type of glue was not important, whereas for beech, the stiffness of joints glued with PVAc was significantly higher than with PUR adhesive.

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Section: Introductionmentioning

confidence: 99%

Effect of wood species, adhesive type, and annual ring directions on the stiffness of rail to leg mortise and tenon furniture joints

Záborský

Borůvka

Kašičková

et al. 2017

BioRes

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“…Depending on the purpose of the treatment, the modification can be classified as mechanical (wood densification), physical (different types of radiation (plastification VF, VVF, IR), layering, increasing the moisture content in interaction with heat, plasticization, or chemical (anhydrides, carboxylic acids, isocyanates, epoxides, etc.). One popular method of modification is the thermal treatment of wood, which is considered environmentally friendly (Hill et al 2006;Kubovsky and Babiak 2009;Hrčka and Babiak 2012;Barcík 2013, 2014;Svoboda et al 2015;Miftieva et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Fire Resistance of Thermally Modified Spruce Wood

Čekovská¹,

Gaff²,

Osvald³

et al. 2016

BioResources

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The risk of possible ignition and burning is one of the greatest disadvantages of using wood as a construction material. An environmentally appropriate method of improving the fire-resistant properties of wood is available via thermal treatment. In this study, spruce wood (Picea abies L.) was thermally modified at 160 °C, 180 °C, and 210 °C. The effect of thermal modification on the fire performance of the wood, including weight loss and burn rate, was evaluated. A new testing method was designed to be sufficiently sensitive to monitor fire performance. The results showed that the thermally modified spruce wood had a lower weight loss than untreated wood. The burn rate of wood that was thermally modified at 160 °C was similar to that of untreated wood. Higher thermal treatment temperatures caused a higher burn rate. After the flame was removed, the burning process was rapidly stopped in thermally treated wood.

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“…In the woodworking industry, homogeneity leads to better performance, thereby reducing the possible negative properties of wood that could lead to material failures. In environmental modification of wood, a number of studies have focused on thermal modification [9][10][11][12][13][14][15]. Densification of wood is also one of the ways to modify the basic properties modification [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Laminated Veneer Lumber with Non-Wood Components and the Effects of Selected Factors on Its Bendability

Svoboda

Síkora

Záborský

et al. 2019

Forests

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Knowledge of the coefficients of wood bendability (KbendC and KbendB) and of the effects of selected factors on the listed characteristics in bending stress has both scientific and practical significance. It forms a foundation for designing tools for bending and determines the stress that products and their parts can be exposed to during use. This study analyzes the effects of selected factors on the selected characteristics, such as the coefficients of wood bendability (KbendC and KbendB). The selected factors of this study were wood species (WS) (Fagus sylvatica L. and Populus tremula L.), non-wood component (carbon fiber and glass fiber), position of the non-wood component in the laminated material (top and bottom), material thickness (T) (6 mm, 10 mm, and 18 mm), and adhesive (polyvinyl acetate and polyurethane), as well as their combined interaction on the monitored characteristics described above. The results contribute to the advancement of knowledge necessary for the study and development of new materials with specific properties for their intended use. The measured values of laminated structures can be compared with the values measured on the samples from the wood. The results can improve the innovative potential of wood processing companies and increase their performance and competitiveness in the market.

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Bending Characteristics of Multilayered Soft and Hardwood Materials

Cited by 9 publications

References 10 publications

Effect of wood species, adhesive type, and annual ring directions on the stiffness of rail to leg mortise and tenon furniture joints

Effect of wood species, adhesive type, and annual ring directions on the stiffness of rail to leg mortise and tenon furniture joints

Fire Resistance of Thermally Modified Spruce Wood

Laminated Veneer Lumber with Non-Wood Components and the Effects of Selected Factors on Its Bendability

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