Fig. 10
From: Thermal softening properties of various wood species within an annual ring
Relationships between the difference in the peak value of tanδ and the difference in the peak temperature of tanδ of the specimen in R direction and T direction of various wood measured at 0.5 Hz. These differences are the specimen in R direction values minus EW or LW in T direction. Filled triangle and rhombus, softwoods; open triangle and rhombus, hardwoods; triangle, the difference between EW and R specimens; rhombus, the difference between LW and R specimens. a–e, Softwoods. f–i, Hardwoods. See Fig. 3 for more details