文献类型：期刊文献

中文题名：基于LabVIEW软件平台的粗晶材料超声信号去噪处理的研究

英文题名：LABVIEW PLATFORM BASED DE-NOISING PROCESSING OF ULTRASONIC SIGNAL OF COARSE-GRAINED MATERIALS

作者：张惠[1];刘晴岩[1]

机构：[1]华东理工大学机械工程学院,上海200237

年份：2004

卷号：26

期号：11

起止页码：558

中文期刊名：无损检测

外文期刊名：Nondestructive Testing

收录：CSTPCD

语种：中文

中文关键词：超声检测;粗晶材料;去噪;信号处理

外文关键词：Ultrasonic testing; Coarse-grained material; De-noising; Signal processing

摘要：采用超声纵波检测粗晶材料缺陷时,由于晶粒粗大及各向异性的影响,将产生较强的组织散射噪声,降低材料超声探伤的信噪比,严重干扰对缺陷回波的正确识别与判断。文章分析了粗晶材料超声信号去噪处理方法,提出了基于软件平台LabVIEW的信号处理构想,设计了粗晶材料超声信号去噪处理的LabVIEW处理模块,为有效抑制粗晶材料的组织散射噪声提供了手段。
When ultrasonic detection is used to inspect the defect of coarse-grained materials, serious structure-scattered noise will occur because of the influence of coarse grains,consequently the signal-to-noise ratio(SNR) is lowered and identification and judgment of defect signal is seriously disturbed. Signal processing design ideas based on the software LabVIEW are put forward after the de-noising processing method of ultrasonic signal of coarse-grained materials is analysed. The design of de-noising processing module on LabVIEW is also studied. and methods are offered for suppressing the structure-scattered noise in coarse-grained materials efficiently.