面向古建筑木构件内部缺陷勘测的应力波临界速度确定  

Method to Calculate the Critical Velocity of the Stress Wave in Defect Detection of Ancient Architecture Wood Parts

作　　者：廖春晖[1] 张厚江[1] 黎冬青[2] 王喜平[3] 

机构地区：[1]北京林业大学工学院,北京100083 [2]北京市古代建筑研究所,北京100050 [3]美国农业部林产品实验室

出　　处：《西北林学院学报》2013年第4期158-161,共4页Journal of Northwest Forestry University

基　　金：林业公益性行业科研专项(201304512)

摘　　要：利用Fakopp应力波检测仪对北京市古建筑中较常使用材落叶松、琼楠、杉木进行检测,结合统计学中置信区间估算方法,处理应力波仪检测出的应力波在健康材料中的传播速度,总结出一套古建筑木构件现场缺陷检测的应力波传播临界速度的计算方法,期望利用此方法建立一个应力波速度检测依据,使在今后现场检测当中能快速、准确判断出古建筑木构件中是否存在缺陷及缺陷的位置,以便进一步的检测。The stress wave test technology has a wide range of application in internal defect detection of the wood parts in ancient architecture.A stress wave measuring equipment,Fakopp was adopted to carry out the test on 3 woods that were conventionally used in ancient architectures in Beijing,including larch（Larix gmelinii）,nanmu（Beilschmiedia）,and fir（Cunninghamia lanceolata）.Comparing with the those which were measured with defects free materials,the obtained data were processed by a statistic method,confidence interval,a set of calculation methods for the defect detection was summed.It was hoped to extend this methods for a quick and accurate on-site detection of the defects in wood parts for ancient architecture.

关 键 词：古建筑木构件 应力波 置信区间 临界速度 

分 类 号：S781[农业科学—木材科学与技术]