应力波法评价樟子松结构指接规格材的抗弯性能  

Evaluation of Bending Performances for Pinus Structural Finger-jointed Dimension Lumber Using Stress Wave Nondestructive Method

作　　者：赵秀[1] 孟祥鹏[1] 关帅[1] 黄在华[1] 

机构地区：[1]黑龙江省木材科学研究所国家林业局制材研究重点实验室,哈尔滨150081

出　　处：《林业科技》2015年第6期26-28,共3页Forestry Science & Technology

基　　金：林业公益性行业科研专项"工程木质复合材料结构承载性能检测技术研究"(201304514);黑龙江省基本科研业务费项目"将神经网络应用于落叶松规格材抗弯强度预测的研究"(HCZ201404)

摘　　要：采用应力波无损检测方法 ,测试樟子松结构用指接规格材的动态弹性模量,研究樟子松结构指接规格材动态弹性模量与静态弹性模量、抗弯强度之间的相互关系。研究结果表明,动态弹性模量与静态弹性模量和抗弯强度之间存在显著的线性关系。分析了平压法和侧压法2种测试方法对测得的静态弹性模量和抗弯强度的影响,结果表明,2种测试方法对测得的弹性模量和抗弯强度无显著影响。A study was conducted to evaluate the bending performances of pinus structural finger-jointed dimension lumber based on stress wave equipment. The dynamic performance based on the stress wave tests was compared to the result from the static bending test. There was linear correlation between the bending performances. The impact of flatwise bending test and edgewise bending test on the static modulus of elasticity and bending strength of finger-jointed dimension lumber were investigate. The results show that the two test methods have no significant effect on the static modulus of elasticity and bending strength.

关 键 词：结构用指接规格材 应力波 动态弹性模量 静态弹性模量 抗弯强度 

分 类 号：S781.69[农业科学—木材科学与技术]