• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tube international >Reliability improvements in ultrasonic wall thickness measurement of tubes
【24h】

Reliability improvements in ultrasonic wall thickness measurement of tubes

机译：改进超声管壁厚测量的可靠性

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ultrasonic wall thickness measurement of tubes is based on transit time of an ultrasonic pulse between the front and back surface. In a typical case there is an echo train consisting of several back wall echoes. For the highest accuracy, the time interval is measured between the first and second back wall echoes. When the amplitude of the second back echo changes, the accuracy of the measurement is affected. In case it falls below the threshold level, no measurement is made. Considerable surface roughness may cause such an effect or when the tube is in motion during the measurement. In the case of a moving tube the distance between the tube and the transducer as well as its lateral position may vary. This variation causes changes in the amplitude of the echoes.
机译：管的超声壁厚测量是基于超声脉冲在前后表面之间的传播时间。在典型情况下，存在由几个后壁回波组成的回波列。为了获得最高的精度，在第一和第二后壁回波之间测量时间间隔。当第二个回波的幅度发生变化时，会影响测量的准确性。如果降至阈值水平以下，则不会进行测量。相当大的表面粗糙度可能会导致这种影响，或者在测量过程中管在运动时也会引起这种影响。在移动管的情况下，管与换能器之间的距离及其横向位置可能会发生变化。这种变化导致回波幅度的变化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号