Skip to main content

Official Journal of the Japan Wood Research Society

Table 2 The loss modulus E″ peak temperatures for specimens with different moisture content (MC) in all orthotropic directions

From: Moisture-dependent orthotropic viscoelastic properties of Chinese fir wood in low temperature environment

MC (%)

α (°C)

α′ (°C)

β (°C)

0.5 Hz

1 Hz

2 Hz

5 Hz

10 Hz

0.5 Hz

1 Hz

2 Hz

5 Hz

10 Hz

0.5 Hz

1 Hz

2 Hz

5 Hz

10 Hz

0.6

               

 L

31.7

> 40.0

> 40.0

> 40.0

> 40.0

1.7

1.7

− 58.3

− 49.3

− 46.2

− 40.3

− 37.3

 R

30.5

34.3

36.0

37.5

> 40.0

− 70.0

− 67.0

− 64.0

− 54.9

− 52.0

 T

31.9

33.9

35.9

38.9

> 40.0

− 73.1

− 70.2

− 64.1

− 58.1

-− 55.1

3.5

               

 L

> 40.0

> 40.0

> 40.0

> 40.0

> 40.0

0.8

0.7

1.3

1.7

− 86.3

− 81.3

− 78.3

− 75.3

− 72.3

 R

29.6

33.1

35.6

37.1

38.6

− 87.8

− 82.8

− 79.7

− 76.8

− 73.8

 T

30.0

35.0

35.3

38.0

39.3

− 87.2

− 82.0

− 78.9

− 76.0

− 73.0

6.0

               

 L

> 40.0

> 40.0

> 40.0

> 40.0

> 40.0

1.8

0.9

1.4

1.4

1.6

− 97.2

− 91.8

− 90.2

− 88.8

− 82.8

 R

27.5

30.5

33.5

36.5

39.0

− 91.5

− 89.5

− 86.5

− 80.5

− 77.5

 T

28.1

31.1

35.1

36.1

39.1

− 89.9

− 86.8

− 83.8

− 77.8

− 74.8

9.3

               

 L

> 40.0

> 40.0

> 40.0

> 40.0

> 40.0

− 0.3

0.3

0.6

1.6

2.0

− 103.1

− 96.1

− 94.6

− 93.1

− 90.1

 R

27.0

29.8

32.8

35.8

38.8

− 96.2

− 91.2

− 87.2

− 84.2

− 81.2

 T

27.2

30.2

34.2

36.3

38.2

− 93.8

− 90.8

− 87.8

− 81.8

− 78.8

14.1

               

 L

> 40.0

> 40.0

> 40.0

> 40.0

> 40.0

1.9

1.1

1.1

0.9

1.5

− 107.2

− 103.2

− 100.1

− 97.1

− 94.1

 R

25.8

28.8

31.8

34.8

37.7

− 98.2

− 97.3

− 94.2

− 91.2

− 83.1

 T

25.4

29.4

33.2

34.4

37.4

− 97.5

− 91.5

− 85.5

− 82.5

− 79.5

22.0

               

 L

> 40.0

> 40.0

> 40.0

> 40.0

> 40.0

− 0.4

1.1

1.5

− 0.5

1.4

− 113.0

− 107.5

− 104.0

− 102.5

− 101.0

 R

21.7

24.7

30.7

33.7

36.6

− 99.3

− 98.3

− 94.3

− 86.3

− 85.3

 T

21.5

25.5

29.5

32.5

36.5

− 99.5

− 96.6

− 90.5

− 87.4

− 81.4

  1. α, α′, β three relaxation processes of loss modulus