国产油松、马尾松原木品质应力波法试验及其缺陷研究  

Stress Wave Method-based Test of the Quality of Domestic Chinese Pine and Masson Pine Log and Study on Their Defects

作　　者：王亚磊[1] 赵茂程[1] 王正[1] 

机构地区：[1]南京林业大学机械电子工程学院,江苏南京210037

出　　处：《林业机械与木工设备》2014年第10期30-34,共5页Forestry Machinery & Woodworking Equipment

基　　金：2012年度包装行业高新技术研发资金项目(财企[2012]192号);江苏省产学研前瞻性联合研究项目(BY2013006-01)

摘　　要：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。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.

关 键 词：原木节子 孔洞 数学模型 动态弹性模量 振动法 

分 类 号：TS612[轻工技术与工程]