文章摘要
魏志刚,程建政,褚梅娟,张德俊.模糊模式识别在轮箍超声横波探伤中的应用[J].声学技术,2006,(5):426~430
模糊模式识别在轮箍超声横波探伤中的应用
Application of fuzzy pattern recognition in ultrasonic transverse wave detection of wheel flaws
投稿时间:2005-09-30  修订日期:2005-12-10
DOI:
中文关键词: 轮箍检测  横波探伤  模糊模式识别  超声无损检测
英文关键词: wheel flaw detection  transverse wave  fuzzy pattern recognition  ultrasonic NDT
基金项目:国家自然科学基金(10374104)
作者单位
魏志刚 中国科学院武汉物理与数学研究所, 武汉, 430071 
程建政 中国科学院武汉物理与数学研究所, 武汉, 430071 
褚梅娟 中国科学院武汉物理与数学研究所, 武汉, 430071 
张德俊 中国科学院武汉物理与数学研究所, 武汉, 430071 
摘要点击次数: 514
全文下载次数: 441
中文摘要:
      轮箍是铁路机车运行的重要部件,在制造和使用过程中出现的各种危害性缺陷会严重威胁到列车的行驶安全。用超声无损检测缺陷,回波的识别易受轮箍标记、闸瓦、轮轨接触点及表面波等多种因素的干扰。在超声横波探伤基础上,可将模糊模式识别应用到机车轮箍的无损检测中。以内燃机车轮箍为实验检测对象,使用了多个标准人工伤模拟轮箍自然缺陷。通过提取缺陷回波频域相关特征建立典型缺陷的模糊子集,并运用基于贴近度的择近原则对未知缺陷进行分类识别。实验结果证明了该方法有效。对同一缺陷重复检测的正确识别率达92.5%。
英文摘要:
      In manufacturing and running of locomotive wheels,various flaws may occur,threa-tening safety of the train.In ultrasonic non-destructive testing of wheel flaws,the wheel brake,sign,touch point,and even the surface wave will influence the recognition of flaw echoes.Using a gas engine wheel as a test object,typical artificial flaws were made to simulate natural flaws.Based on the transverse wave detection technique,a fuzzy pattern recognition method is applied to ultrasonic transverse wave detection of wheel flaws.Frequency domain features of the received flaw echoes are extracted,from which fuzzy sets of typical flaws are constructed.The concept of simi-larity degree and the principle of choosing the near ones are used.Experimental results show that the method is efficient and can achieve satisfactory performance.In repeated detection of the same flaw,the recognition rate is 92.5%,providing a useful reference to practical applications.
查看全文   查看/发表评论  下载PDF阅读器
关闭
function PdfOpen(url){ var win="toolbar=no,location=no,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes"; window.open(url,"",win); } function openWin(url,w,h){ var win="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=" + w + ",height=" + h; controlWindow=window.open(url,"",win); } &et=DCA5CABA83612A94C2A8485639E00DD481E726470FA3F85856A5069A1FCF8C076C8FC46BAA0E354EE23B0CABAA273B546235CC0C1D758A527A4D810A1A94BAD72EF343A79C01905E79F40E83E9EE31B4C805572C378182DFBFAF7B3C0D33895E&pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=DDCFCD5ACE1B1E5A6D46213553C850CA&yid=37904DC365DD7266&aid=&vid=&iid=94C357A881DFC066&sid=BA48F0B914ED890A&eid=389DA78D878702A9&fileno=20060508&flag=1&is_more=0">