STUDY ON THE ACOUSTIC EMISSION MODEL OF WOOD DAMAGE
木材损伤的声发射模式研究

There is a quantitative relationship between damage and acoustic emission in wood. Based on damage theory and the acoustic emission signal in wood with defects and cracks in different damage phases, this paper establishes wood mechanics models of damage evolution under alternating load and static load, as two kinds of common situations. Analytical results agree with lumber's actual situation. With special characteristics of the acoustic emission, wood mechanics model of damage evolution with is established, which can be used to forecast the damage in advance, and it is shown that inhomogeneity is one of the main causes of damage.