Anisotropy in the electrical resistivity of three Mexican wood

Abstract

The objective of the research was to measure the electrical resistivity of the wood of Pinus pseudostrobus, Tabebuia rosea, and Quercus scytophylla. Twelve solid wood samples were taken from each species and analyzed to determine density, moisture content, and electrical resistance. The small-sized samples were subjected to four electric tensions, and their electrical resistivity was determined. The magnitude of electrical resistivity varies according to the species and the directions of radial, tangential, and longitudinal anisotropy. The heterogeneity and anatomical structure of wood, as well as the type and orientation of the applied stresses, explain the variation between species and directions.