Feasibility of Domestic Yellow Poplar (Liriodendron tulipifera) Dimension Lumber for Structural Uses

임진아,; 오정권,; 여환명,; 이전제,

doi:10.5658/wood.2010.38.6.470

Cited by 9 publications

(5 citation statements)

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“…Yue et al (2023) recommended heat treatment at 180 ℃ to improve the properties of structural Chinese poplar. Kim et al (2010) investigated the physical and mechanical properties of heat-treated yellow poplar, and Lim et al (2010) confirmed the possibility of use through the bending strength of structural yellow poplar lumber. Mohamadzadeh and Hindman (2015) conducted tests to compare the strength of CLT made by yellow poplar layers to general CLT.…”

Section: Introductionmentioning

confidence: 85%

Evaluation of the tensile strength of Korean yellow poplar lumber

Kim,

Song,

Shim

2024

BioRes

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This study was conducted to confirm the feasibility of using yellow poplar, which is a fast-growing hardwood species in Korea, as a structural material. Lumber was produced, and the mechanical grading and the knot diameter ratio on the wide surface measurement were performed for each grade of lumber. It was confirmed that the majority mechanical grades of yellow poplar were E10, E11, and E12, and the size of knot in the surface increased as the mechanical grades decreased. A fitted distribution of tensile strength of the lumbers was the Weibull distribution. As a result of calculating the tensile allowable stress using the 5th percentile value calculated by the Weibull distribution and the non-parametric method according to the mechanical grade, all the experimental values were higher than the minimum allowable stresses presented in the Korean industrial standards. However, for the low grades, there was no significant difference from the standard values. This was thought to be due to the large size of knots in low-grade lumber. It was expected that the prospect of using yellow poplar structural member will be higher if additional research is conducted on the restriction of knot size according to the mechanical grade.

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Section: Introductionmentioning

confidence: 85%

Evaluation of the tensile strength of Korean yellow poplar lumber

Kim,

Song,

Shim

2024

BioRes

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“…In Korea, Yellow poplar is one of the deciduous trees which have various uses and high commercial value for structural frame, architectural interior, furniture, musical instrument and pulp (Lim et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Pore Characterization in Cross Section of Yellow Poplar (Liriodendron tulipifera) Wood

Jang¹,

Kang²,

Jang³

2019

Journal of the Korean Wood Science and Technology

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This study was conducted to analyze the pore structure of Yellow poplar. Cross-sectional surfaces of heartwood and sapwood of Yellow poplar (Liriodendron tulipifera) were observed by SEM, and the true density of the heartwood, intermediate wood and sapwood were measured by gas pycnometery, while gas permeability and pore size of heartwood, intermediate wood and sapwood were measured by capillary flow porometery. The pores were classified as through pore, blind pore and closed pore.It was determined that the permeability was increased due to the content and size of through pore being increased although the total porosity of specimen showed slight difference from pith to bark. The content of through pore porosity was 33.754 % of heartwood and 47.810 % of sapwood, showed an increasing trend from pith to bark, however, those for the blind pore porosity and closed pore porosity were 27.890 % and 19.492 % for heartwood and 19.447 % and 4.660 % for sapwood, showed a decreasing trend from pith to bark.The max pore size of specimens was increased by about 5 times from 5.927 μm to 31.334 μm, and mean flow pore size was increased by about 315 times from 0.397 μm to 12.437 μm from pith to bark.

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“…Additionally, the physical and mechanical properties of heat-treated yellow poplar wood were evaluated. Lim et al (2010) used softwood visual grading standards to classify yellow poplar lumber and confirmed the possibility of using yellow poplar lumber as a structural material. Kim et al (2024) confirmed the feasibility of the application of MSR for yellow poplar lumber grading and calculated design value according to grading through full-size tensile tests.…”

Section: Introductionmentioning

confidence: 76%

Allowable bending properties of machine-graded Korean yellow poplar lumber

Song,

Shim,

Lee

et al. 2024

BioRes

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This study was conducted to investigate the feasibility of using yellow poplar as a structural member by determining allowable bending properties. Full-size lumber was classified by machine grading and the knot diameter ratio on the wide surface of lumber. The majority of machine grades of yellow poplar lumber with a cross-section of 38 × 89 mm2 were E8, E9, and E10. It was confirmed that the size of the knot diameter ratio tended to be smaller for higher machine grades. In the lowest grade, E8, of most machine grades, the allowable bending strength was lower than the corresponding design value in Korean standards. Application of 0.5 knot diameter ratio to the E8 grade lumber increased the bending strength to 3 MPa of the allowable value to suit the design value. All the allowable modulus of elasticities values of the majority of machine grades were higher than the design values. From the results of this study, it was expected that Korean yellow poplar could be utilized for structural bending members.

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Feasibility of Domestic Yellow Poplar (Liriodendron tulipifera) Dimension Lumber for Structural Uses

Cited by 9 publications

References 0 publications

Evaluation of the tensile strength of Korean yellow poplar lumber

Evaluation of the tensile strength of Korean yellow poplar lumber

Pore Characterization in Cross Section of Yellow Poplar (Liriodendron tulipifera) Wood

Allowable bending properties of machine-graded Korean yellow poplar lumber

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