“Properties of Certain Species of Wood”的意思、由来-百科全书

Properties of Certain Species of Wood

Table

Properties of certain species of wood

species

density*

(gram/cc)

percent shrinkage

mechanical properties*

axial²

radial

tangential²

volume²

static bending(N/mm²)**

compression(N/mm²)**

tension(N/mm²)**

hardness

(side; kN)**²

toughness

(N m)**²

modulus

parallel

perpendicular

parallel

perpendicular

elasticity

rupture

lignum vitae

(Guaiacum officinale)

1.23

0.1 5.6

9.3

15.0

121

. . .

123

88.0

. . .

. . . 15.8 . . .

white oak

(Quercus alba) 0.68 . . . 5.3 9.6 18.9 105 12,280

9.1

. . .

5.5 6.0 36.7

American beech (beech)

(Fagus grandifolia) 0.64 . . . 5.1 11.0 16.3 103 11,900

7.0

. . .

7.0 5.8 . . .

European chestnut (chestnut)

(Castanea sativa) 0.61 0.6 4.3 6.4 11.6 75 8,820

. . .

132

. . . 3.1 . . .

Scotch pine (pine)

(Pinus sylvestris) 0.53 0.4 4.0 7.7 12.4 98 11,760

4.1

102

2.9 2.4 . . .

Douglas fir

(Pseudotsuga menziesii) 0.48 . . . 5.0 7.8 11.8 83 13,660

6.0

130

2.3 3.2 31.7

Norway spruce (spruce)

(Picea abies) 0.44 0.3 3.6 7.8 12.0 60 9,100

4.1

1.5 1.5 . . .

redwood

(Sequoia sempervirens) 0.40 . . . 2.6 4.4 6.8 69 9,250

5.9

. . .

1.7 2.1 13.0

balsa

(Ochroma lagopus) 0.16 0.6 2.4 4.4 7.5 19 2,550

1.0

1.0 0.4 . . .

See as table:

*Based on specimens in air-dry condition (12-15% moisture content).

**N = newton (about 0.22 pound); kN = 1,000 newtons.

Source: Adapted from George Tsoumis, Science and Technology of Wood (1991).

词条	Properties of Certain Species of Wood
释义	Properties of Certain Species of Wood Table Properties of certain species of wood species density* (gram/cc) percent shrinkage {{r}} mechanical properties* {{r}} axial² radial tangential² volume² static bending(N/mm²) {{r}} compression(N/mm²) {{r}} tension(N/mm²) {{r}} hardness (side; kN)² toughness (N m)*² modulus {{r}} parallel perpendicular parallel perpendicular elasticity rupture lignum vitae (Guaiacum officinale) 1.23 0.1 5.6 9.3 15.0 121 . . . 123 88.0 . . . . . . 15.8 . . . white oak (Quercus alba) 0.68 . . . 5.3 9.6 18.9 105 12,280 51 9.1 . . . 5.5 6.0 36.7 American beech (beech) (Fagus grandifolia) 0.64 . . . 5.1 11.0 16.3 103 11,900 50 7.0 . . . 7.0 5.8 . . . European chestnut (chestnut) (Castanea sativa) 0.61 0.6 4.3 6.4 11.6 75 8,820 49 . . . 132 . . . 3.1 . . . Scotch pine (pine) (Pinus sylvestris) 0.53 0.4 4.0 7.7 12.4 98 11,760 30 4.1 102 2.9 2.4 . . . Douglas fir (Pseudotsuga menziesii) 0.48 . . . 5.0 7.8 11.8 83 13,660 51 6.0 130 2.3 3.2 31.7 Norway spruce (spruce) (Picea abies) 0.44 0.3 3.6 7.8 12.0 60 9,100 30 4.1 84 1.5 1.5 . . . redwood (Sequoia sempervirens) 0.40 . . . 2.6 4.4 6.8 69 9,250 42 5.9 . . . 1.7 2.1 13.0 balsa (Ochroma lagopus) 0.16 0.6 2.4 4.4 7.5 19 2,550 9 1.0 73 1.0 0.4 . . . See as table:* Based on specimens in air-dry condition (12-15% moisture content). N = newton (about 0.22 pound); kN = 1,000 newtons. Source: Adapted from George Tsoumis, Science and Technology of Wood* (1991).
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