PSD-V-A综合判别法在胶合木胶缝缺陷测试中的应用研究  

Research on application of PSD-V-A comprehensive criterion in testing on glue laminated timber with glue line defects

作　　者：王解军[1] 黄佳[1] 陈晓[1] 刘艳格[1] 

机构地区：[1]中南林业科技大学,湖南长沙410004

出　　处：《中南林业科技大学学报》2016年第6期79-83,共5页Journal of Central South University of Forestry & Technology

基　　金：国家林业局科研专项"木结构工程材制造及应用关键技术研究与示范"(201304504)子项3:木结构工程材质量无损检测与评定(201304504-3);中南林业科技大学研究生科技创新基金项目(CX2014B34)

摘　　要：使用兴安落叶松,制作了模拟单层与双层胶缝缺陷的胶合木构件,采用超声波法对胶合木构件的声速、波幅及整体波形进行了详细的测试与分析,并提出采用PSD-V-A综合法来判别胶缝缺陷的位置、边界与严重性。该方法可避免以往单一声学参数分析法可能存在的误判现象,提高了判别的准确性。Xing-an larch is used to make the simulation of glue laminated components with single and double glue line defects in this paper. By the method of ultrasonic, the sound velocity amplitude and waveform of glue laminated components has been carried on detailed tests and analysis. And the PSD-V-A has been presented to be used to distinguish the position, boundary and severity of the glue line defect. This way can avoid possible misjudgment made by single acoustic parameter analysis, improving the accuracy of the discriminant.

关 键 词：胶合木 胶缝缺陷 超声波法 声速 波幅 PSD-V-A综合判别法 

分 类 号：S781.65[农业科学—木材科学与技术]