文章摘要
霞飞,刘飞,赵满全,杜兰,刘晓东.基于超声导波检测管道缺陷的数值模拟[J].声学技术,2019,(2):164~169
基于超声导波检测管道缺陷的数值模拟
Numerical simulation of pipeline defects detection based on ultrasonic guided wave
投稿时间:2017-12-04  修订日期:2018-02-02
DOI:10.16300/j.cnki.1000-3630.2019.02.009
中文关键词: 超声导波|模态|缺陷
英文关键词: guided wave|mode|defect
基金项目:国家自然科学基金项目(11662013)
作者单位E-mail
霞飞 内蒙古农业大学机电工程学院, 内蒙古呼和浩特 010018  
刘飞 内蒙古农业大学机电工程学院, 内蒙古呼和浩特 010018  
赵满全 内蒙古农业大学机电工程学院, 内蒙古呼和浩特 010018 nmgzhaomq@163.com 
杜兰 内蒙古农业大学机电工程学院, 内蒙古呼和浩特 010018  
刘晓东 内蒙古农业大学机电工程学院, 内蒙古呼和浩特 010018  
摘要点击次数: 217
全文下载次数: 188
中文摘要:
      为了研究扭转模态在不同形状管道中的传播特性和缺陷的检测能力,建立了带有缺陷的管道有限元模型,利用有限元软件ABAQUS对T (0,1)模态导波在直管、弯管中的传播过程进行数值模拟研究。导波信号采用汉宁窗调制的正弦信号,激励T (0,1)模态信号。结果表明:最低阶的扭转模态适合于管道的缺陷检测;50 kHz的T (0,1)模态导波对直管、弯管上的缺陷敏感,在缺陷对应的位置上,导波的回波幅值最大,能量也较集中。
英文摘要:
      In order to study the propagation property and defect detection ability of the torsional modes in different shapes of pipelines with defects, in this paper, a finite element model of pipeline with defects is established. The numerical simulation of T (0,1) modal guided wave propagation in the straight pipeline and the elbow is carried out by finite element software ABAQUS. The sinusoidal signal modulated by Hanning window is used to excite the T (0,1) modal signal. The results show that the lowest order torsional mode is suitable for pipeline defect detection. Moreover, the T (0,1) modal guided wave of 50 kHz is sensitive to the defects of the straight pipeline and the elbow. In the position corresponding to the defect, the guided wave has the greatest echo amplitude and the more concentrated energy.
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=69B9C376FE050A227D39A0202F44EDEF6F79F046409B617C55B27F0191F65D05F574C1C0809CDB471C7FE3988BF9C55E0AC782FCAC777C02801700F597C3A96003A31F8D2E8D38D7397706F92339517DE16F9D7F7196D5CE&pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=DDCFCD5ACE1B1E5A6D46213553C850CA&yid=B6351343F4791CA3&aid=&vid=&iid=0B39A22176CE99FB&sid=F260CE035846B3B8&eid=954CE65414DD94CA&fileno=20190209&flag=1&is_more=0">