高阶谱应用中应力波波速的估计

CORC > 集美大学

	高阶谱应用中应力波波速的估计
	赵国文
刊名	http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=sxjs200805016&dbcode=CJFQ&dbname=CJFQ2008
	2012-06-05 ; 2012-06-05
关键词	高阶谱延时估计混凝土波速 higher order spectrum time delay concrete wave speed O347.4
其他题名	Evaluating stress wave speed by higher order spectrum
中文摘要	在应用冲击波法进行无损估计时,应力波波速测量是一项非常重要的工作。研究了基于高阶谱的时间延迟估计原理及其算法,并将其应用到基于冲击波法的双传感器测量应力波波速方法中,解决了传统的直接观察法中的人为误差的影响和噪声对测量精度的影响,降低了测量误差,波速数据具有更好的一致性,取得了满意的实验结果。; Measurement of wave speed is very important when impact method is applied to non - destructive testing of concrete structure. Time delay estimation algorithm and theory based on higher order spectrum function are studied. This algorithm has been applied to wave speed evaluation in the case where the wave speed of concrete structures is measured by two transducers. The influences of observation error and noise are eliminated when the higher order spectrum based time delay evaluation is used. Measurement errors are reduced and wave speed data are more consistent. Experiment results are satisfied.; 【作者单位】集美大学轮机工程学院；【作者英文名】ZHAO Guo-wen (Marine Engineering Institute, Jimei University, Xiamen 361021, Fujian, China)
语种	中文
内容类型	期刊论文
源URL	[http://ir.calis.edu.cn/hdl/235041/17718]
专题	集美大学
推荐引用方式 GB/T 7714	赵国文. 高阶谱应用中应力波波速的估计[J]. http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=sxjs200805016&dbcode=CJFQ&dbname=CJFQ2008,2012, 2012.
APA	赵国文.(2012).高阶谱应用中应力波波速的估计.http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=sxjs200805016&dbcode=CJFQ&dbname=CJFQ2008.
MLA	赵国文."高阶谱应用中应力波波速的估计".http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=sxjs200805016&dbcode=CJFQ&dbname=CJFQ2008 (2012).