STP405

    Anisotropy in Wood

    Published: Jan 1966


      Format Pages Price  
    PDF Version (476K) 18 $25   ADD TO CART
    Complete Source PDF (2.4M) 18 $55   ADD TO CART


    Abstract

    Wood is an anisotropic, cellulosic, semicrystalline, cellular material. The tissue making up the woody substance is oriented such that mechanical properties are generally higher along the bole of a tree than across the bole. The mechanical properties (elastic, strength, and rheologic) exhibit strong orientation effects and are complicated by the addition of growth irregularities. Mechanically, clear wood obeys the laws of elastic orthotropic materials, and its failure characteristics are well described by strain energy of distortion-type theory.

    Keywords:

    anisotropy, mechanical properties, rheology, wood


    Author Information:

    Ethington, R. L.
    Technologist and engineer, U. S. Forest Products Laboratory, Forest Service, U. S. Department of Agriculture,

    Hilbrand, H. C.
    Technologist and engineer, U. S. Forest Products Laboratory, Forest Service, U. S. Department of Agriculture,


    Paper ID: STP45149S

    Committee/Subcommittee: D30.05

    DOI: 10.1520/STP45149S


    CrossRef ASTM International is a member of CrossRef.