基于正弦曲面超声缓冲杆的回波降噪方法
Ultrasonic Denoising Technology Based on a Buffer Rod with Sine Outline Structure
摘 要
为了消除超声缓冲杆中尾随噪声对超声回波信号的影响,提出了一种复杂结构的缓冲杆,可有效提高超声回波信号的信噪比。采用超声数值仿真方法,分析了缓冲杆外轮廓形状、周期数变化对回波信号信噪比的影响,发现正弦曲面缓冲杆比常规的圆柱及圆锥杆具有更高的信噪比,可为超声缓冲杆的优化设计提供理论指导。
缓冲杆
超声检测
数值仿真
信噪比
Polymer
Buffer rod
Ultrasonic measurement
Numerical Simulation
SNR
Abstract
To decrease the influence of trailing echoes on testing signals during the ultrasonic wave propagation in a buffer rod,a new structure of the buffer rod was proposed in this paper,with which the ultrasonic sensor can obtain signals of higher signal-to-noise ratio (SNR). By using simulation method,influences of the rod shape and structure on SNR were analyzed. It was found that the rod with structure of sine outline is more better than the cylinder or cone rod. Conclusions drawn in this paper can give theoretical guidance for the rod's manufacture.
中图分类号 TB553 TG115.28 DOI 10.11973/wsjc201511015
所属栏目 试验研究
基金项目 宁夏自然科学基金资助项目（NZ14100）;北方民族大学科研资助项目（2014XYZ07）;北方民族大学引进人才项目;北方民族大学基本科研项目
收稿日期 2015/5/18
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备注武美先（1972-）,女,讲师,硕士,主要从事无损检测及智能算法方面的工作。
引用该论文: WU Mei-xian,ZHANG Dong-li,WANG Zhao-ba,CHEN Zhen-mao. Ultrasonic Denoising Technology Based on a Buffer Rod with Sine Outline Structure[J]. Nondestructive Testing, 2015, 37(11): 64～67
武美先,张东利,王召巴,陈振茂. 基于正弦曲面超声缓冲杆的回波降噪方法[J]. 无损检测, 2015, 37(11): 64～67
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参考文献
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【2】LIONETTO E,SANNINO A,MAFFEZZOLI A. A cellulose-based hydrogel as a potential bulking agent for hypocaloric diets: An in vitro biocompatibility study on rat intestine［J］. Polymer,2005,46: 1796-1803.
【3】SHAH. Sensor development for high temperature biscosity measurement［C］∥［S.l］:［s.n］,1997:853-857.
【4】REDWOOD M R. Mechanical waveguides ［M］.New York: Pergamon,1960: 162-167.
【5】JEN C K,LEGOUX J G,PARENT L. Experimental evaluation of clad metallic buffer rods for high temperature ultrasonic measurements ［J］.NDT&E International,2000,33(3):145-153.
【6】王爽,王召巴,郑建利,等.超声缓冲杆仿真研究［J］. 无损检测,2008,30(5): 307-309.
【7】丁战阳,王召巴,陈友兴,等. 螺杆挤出机中聚合物混合状态的超声波在线监测方法［J］. 无损检测,2009,31(7):541-543.
【8】Cyberlogic. Introduction to Cyberlogic ultrasound simulation Software［EB/OL］.http:∥www.cyberlogic.org/software.html,2015-09-25.
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