Fig. 5From: Friction characteristics between metal tool and wood impregnated with phenol formaldehyde (PF) resin during exposure to high pressureRelationship between the stem displacement (D), and friction coefficient (µ, upper graphs) and nominal compressive strain (ε, lower graphs) for each phenol formaldehyde (PF) resin concentration and temperature. Triangles show the starting point of the sticking friction of 30 % PF resinBack to article page