Mechanical properties of juvenile and mature wood of <em>Pinus densiflora</em> from plantations

JIN Chun-de; ZHANG Mei-shu; WEN Gui-feng; TANG Yan-ping; XU Ce

Volume 23 Issue 5

Feb. 2017

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Article Navigation > Journal of Zhejiang A&F University > 2006 > 23(5): 477-481

JIN Chun-de, ZHANG Mei-shu, WEN Gui-feng, TANG Yan-ping, XU Ce. Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations[J]. Journal of Zhejiang A&F University, 2006, 23(5): 477-481.

Citation:

JIN Chun-de, ZHANG Mei-shu, WEN Gui-feng, TANG Yan-ping, XU Ce. Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations[J]. Journal of Zhejiang A&F University, 2006, 23(5): 477-481.

Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations

1.
.School of Engineering , Zhejiang Forestry College , Linan 311300, Zhejiang , China;
2.
.Agricultural College ,Yanbian University , Longjing 133400 , Jilin , China

Funds:

国家自然科学基金资助项目(30060070)

Received Date: 2005-12-05
Rev Recd Date: 2006-04-29
Publish Date: 2006-10-20

Abstract

Based on the variation pattern of wood properties obtained from the analysis results of measurement of tracheid length , microfibril angle , ratio of tracheid length to width , basic density and late wood percentage , the boundary of juvenile and mature wood of Pinus densiflora plantation was demarcated by using optimum method of classification , and the differences of mechanical properties of juvenile wood and mature wood from Pinus densiflora plantation were analyzed , from which we can conclude that the properties of mature wood at the age of 12 years old such as modulus of rupture (MOR), modulus of elasticity (MOE), tensile strength parallel to grain , compressive strength parallel to grain and tangential strength in compression perpendicular to grain are higher than those of juvenile wood .The properties such as radical compressive strength perpendicular to grain , tangential face shearing strength , radial face shearing strength , tangential cleavage strength , radial cleavage strength of juvenile wood are higher than those of mature wood .The difference of MOR, MOE radical compressive strength perpendicular to grain , and tangential face shearing strength of juvenile and mature wood from plantation reaches 0.01 level of significance , and tensile strength parallel to grain reach 0.05 level of significance .[ Ch , 1 fig .6 tab .6 ref
- forest engineering,
- plantation,
- Pinus densiflora,
- juvenile wood,
- mature wood,
- difference of mechanical property

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations

1. .School of Engineering , Zhejiang Forestry College , Linan 311300, Zhejiang , China;

2. .Agricultural College ,Yanbian University , Longjing 133400 , Jilin , China

Funds:

国家自然科学基金资助项目(30060070)

Received Date: 2005-12-05

Rev Recd Date: 2006-04-29

Publish Date: 2006-10-20

Key words:

Abstract: Based on the variation pattern of wood properties obtained from the analysis results of measurement of tracheid length , microfibril angle , ratio of tracheid length to width , basic density and late wood percentage , the boundary of juvenile and mature wood of Pinus densiflora plantation was demarcated by using optimum method of classification , and the differences of mechanical properties of juvenile wood and mature wood from Pinus densiflora plantation were analyzed , from which we can conclude that the properties of mature wood at the age of 12 years old such as modulus of rupture (MOR), modulus of elasticity (MOE), tensile strength parallel to grain , compressive strength parallel to grain and tangential strength in compression perpendicular to grain are higher than those of juvenile wood .The properties such as radical compressive strength perpendicular to grain , tangential face shearing strength , radial face shearing strength , tangential cleavage strength , radial cleavage strength of juvenile wood are higher than those of mature wood .The difference of MOR, MOE radical compressive strength perpendicular to grain , and tangential face shearing strength of juvenile and mature wood from plantation reaches 0.01 level of significance , and tensile strength parallel to grain reach 0.05 level of significance .[ Ch , 1 fig .6 tab .6 ref

Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations

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References

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通讯作者: 陈斌, bchen63@163.com

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Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations

1. .School of Engineering , Zhejiang Forestry College , Linan 311300, Zhejiang , China;

2. .Agricultural College ,Yanbian University , Longjing 133400 , Jilin , China

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Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations

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Proportional views

通讯作者: 陈斌, bchen63@163.com

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Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations

1. .School of Engineering , Zhejiang Forestry College , Linan 311300, Zhejiang , China; 2. .Agricultural College ,Yanbian University , Longjing 133400 , Jilin , China

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1. .School of Engineering , Zhejiang Forestry College , Linan 311300, Zhejiang , China;

2. .Agricultural College ,Yanbian University , Longjing 133400 , Jilin , China