应力波无损检测评价落叶松结构指接材的抗弯性能  

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

作　　者：赵秀[1] 关帅[1] 孟祥鹏[1] 时兰翠[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,黑龙江哈尔滨150081

出　　处：《林业科技》2015年第2期18-20,共3页Forestry Science & Technology

基　　金：林业公益性行业科研专项基金项目"工程木质复合材料结构承载性能检测技术研究"(201304514)

摘　　要：采用应力波无损检测方法,测试2种指接方式的落叶松结构用指接规格材动态弹性模量并预测其抗弯性能。研究结果表明,指接方式对抗弯性能有影响,水平指接规格材动态弹性模量、静态弹性模量及抗弯强度均大于垂直指接规格材;动态弹性模量与静态弹性模量和抗弯强度之间存在线性相关性。A study was conducted to evaluate the bending performances for two types of larch structural finger-jointed dimension lumber based on stress wave equipment. It was found that finger joint mode has effect on the bending performances of larch structural finger-jointed dimension lumber. The bending performances of larch structural horizontal finger-jointed dimension lumber are higher. The dynamic performance, based on the stress wave tests, was compared to the result from the static bending test. There is linear correlation between the bending performances.

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：S781.6[农业科学—木材科学与技术] TS653.5[农业科学—林学]