CAJ | 학술논문

为了探讨振动法测量木材动态弹性模量时应力波波速的差异性，本实验选取含有不同节子及内部孔洞的国产油松、马尾松原木为试验材料，采用纵向敲击法测量原木试材的动态弹性模量。建立原木缺陷的数学模型，模拟计算和分析表明，木材节子及孔洞对应力波波速及弹性模量均有影响，而且降低了木材品质。
위료탐토진동법측량목재동태탄성모량시응력파파속적차이성，본실험선취함유불동절자급내부공동적국산유송、마미송원목위시험재료，채용종향고격법측량원목시재적동태탄성모량。건립원목결함적수학모형，모의계산화분석표명，목재절자급공동대응력파파속급탄성모량균유영향，이차강저료목재품질。
In order to discuss the differences of stress wave velocity during the measurement of wood dynamic elasticity modulus with a vibration method. Chinese pine and Masson pine log with different knots and inner holes are selected for the experiment, with a longitudinal hammering method used to measure the dynamic modulus of elasticity of the log tested. A mathematical model for log defects is established and simulation calculation and analysis show that timber knots and holes have effect on stress wave velocity and stimulus of elasticity,thereby reducing timber quality.