学术
木材声学-声波分等检测技术及工业应用
SANDOZ Jean Luc[1] 殷亚方[2] BENOIT Y[1] 姜笑梅[2]
[1]Cbs-Cbt木材和木结构技术公司,瑞士 [2]中国林科院木材工业研究所国家林业局木材科学与技术重点实验室,北京100091
摘 要:
介绍了在应力波-超声波技术基础上发展起来的木材声学-超声波分等检测技术。通过测量超声波的传播速度以及一定时域内的传播能量，建立关系模型，对木材的抗弯弹性模量（MOE）和抗弯强度（σb）进行评估。该技术可在木结构建筑设计、木结构建筑现场调查、森林质量控制和管理等领域广泛应用。[著者文摘]
文章出处:
《木材工业》-2007年21卷6期 -27-30页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1001-8654（2007）06-0027-04
An Acousto-ultrasonic Timber Grading and Inspection Technology and Industrial Applications
SANDOZ Jean Luc, YIN Ya-fang, BENOIT y, JIANG Xiao-mei （ Cbs-Cbt Timber and Structure Company, Switzerland; Research Institute of Wood Industry, Chinese Academy of Forestry;Key Lab of State Forestry Administration, Beijing 100091,China）
Abstract:
In order to design efficient timber structures by using an advanced reliability concept, timber material has to be graded for a specific strength class based on both MOE and σb values. An acousto-ultrasonic grading method has been developed as an upgrading of the stress wave ultrasonic technique. The basic non-destructive variables are the speed of the low frequency wave, and the transmitted energy in the time domain. Based on these two technical data, MOE and σb can be evaluated with a very good correlation.[著者文摘]
Key words:
lumber grading; acousto-ultrasonic measurement; non-destructive evaluation
基金资助:
引进国际先进农业科技技术（948）项目（2005-4-73）;“十一五”国家科技支撑计划“高强度结构材加工利用技术”课题（2006BAD18B07）.
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