钢筋混凝土材料损伤的声发射信号处理  

Research of AE Characteristic of Reinforced Concrete Structures

作　　者：贾莉莉[1,2] 王汝笠 

机构地区：[1]中科院上海技术物理研究所,上海200083 [2]上海奥达光电子科技公司,上海200083

出　　处：《科学技术与工程》2009年第14期4234-4237,共4页Science Technology and Engineering

摘　　要：针对钢筋混凝土材料试件进行了加载破坏试验,采用小波变换对现场采集到的混凝土断裂过程中的声发射信号进行分析处理。试验结果表明用小波变换进行消噪处理,噪声消除效果显著,提高了声发射信号对结构健康监测的准确性,为实际监测钢筋混凝土材料的损伤提供了依据。The devastating tests are accomplished for the samples of reinforced concrete material damage, wavelet transform is used to analyse acoustic emission signal in the process of concrete fracture. Test results show that the wavelet analysis to more effectively extract the characteristics of acoustic emission signals, analysis of acoustic emission signals in time-frequency characteristics, remove noise. Description of wavelet transform provides the basis for injury for the actual monitoring of reinforced concrete materials.

关 键 词：声发射 钢筋混凝土 小波 信号处理 

分 类 号：TU502.7[建筑科学—建筑技术科学]