Wood-Based Materials

Wood, as the basic construction material in furniture, has found widespread use in designed elements: decorative, turned, curved, beam and board. However, surface elements, such as worktops of tables, shelves, partitions and side walls of bodies, require the use of higher quality materials and dimensional stability. For these reasons, in the furniture industry, it is common to use wood-based materials that provide freedom in forming surface shapes, greater stability of thickness than wood and higher material efficiency. The most frequently used wood-based materials in the furniture industry include:

Table 4.3 Resilient properties of wood (Hearmon 1948, Bodig and Goodman 1973)

Wood property

Wood species

Oak

Beech

Ash

Pine

Alder

Density of wood (g/cm3)

0.60

0.75

0.67

0.55

0.38

Linear elasticity module (GPa)

El

16.21

13.96

15.78

16.60

10.42

Er

12.02

22.84

15.09

11.17

0.809

Et

0.626

1.160

0.799

0.583

0.355

Shear elasticity module (GPa)

Glt

0.698

1.082

0.889

0.693

0.313

Glr

0.842

1.645

1.337

1.181

0.632

Grt

0.311

0.471

0.471

0.070

0.144

Poisson’s ratio

ULR

0.360

0.450

0.460

0.420

0.440

ULT

0.330

0.510

0.510

0.510

0.560

Vrt

0.780

0.750

0.710

0.680

0.570

Vrr

0.370

0.360

0.360

0.310

0.290

Vrl

0.060

0.075

0.051

0.038

0.031

UTL

0.030

0.044

0.030

0.015

0.013

• boards bonded from strips and panels,

• carpentry and honeycomb boards,

• chipboards,

• fibreboards and

• plywood.