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空气耦合超声检测中脉冲压缩方法的参数选优

周正干 马保全 孙志明 周晖 黄姿禹 刘晶晶

周正干, 马保全, 孙志明, 等 . 空气耦合超声检测中脉冲压缩方法的参数选优[J]. 北京航空航天大学学报, 2015, 41(1): 1-7. doi: 10.13700/j.bh.1001-5965.2014.0037
引用本文: 周正干, 马保全, 孙志明, 等 . 空气耦合超声检测中脉冲压缩方法的参数选优[J]. 北京航空航天大学学报, 2015, 41(1): 1-7. doi: 10.13700/j.bh.1001-5965.2014.0037
ZHOU Zhenggan, MA Baoquan, SUN Zhiming, et al. Parameter optimization of pulse compression method in air-coupled ultrasonic testing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(1): 1-7. doi: 10.13700/j.bh.1001-5965.2014.0037(in Chinese)
Citation: ZHOU Zhenggan, MA Baoquan, SUN Zhiming, et al. Parameter optimization of pulse compression method in air-coupled ultrasonic testing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(1): 1-7. doi: 10.13700/j.bh.1001-5965.2014.0037(in Chinese)

空气耦合超声检测中脉冲压缩方法的参数选优

doi: 10.13700/j.bh.1001-5965.2014.0037
基金项目: 国家商用飞机制造工程技术研究中心创新基金资助项目(SAMC13-JS-15-022);航天科技创新基金资助项目(CASC06)
详细信息
    通讯作者:

    周正干(1967-),男,湖南湘潭人,教授,zzhenggan@buaa.edu.cn,主要研究方向为超声无损检测技术.

  • 中图分类号: TB553

Parameter optimization of pulse compression method in air-coupled ultrasonic testing

  • 摘要: 多种脉冲压缩方法已成为提高空气耦合超声检测信号信噪比(SNR)的有效手段,而实际使用中面临如何选取合适参数以获得更好压缩效果的问题.基于脉冲压缩技术的基本原理及其在超声检测中的实现,建立了具备超声信号脉冲压缩实时处理的空气耦合超声检测系统.使用窄带空气耦合超声换能器分别就线性调频、非线性调频及相位编码脉冲压缩方法的关键参数对压缩效果的影响开展了实验研究,获得了脉冲压缩参数选取准则.最后以模拟缺陷的蜂窝夹芯复合材料试样为对象,验证了参数选优后的脉冲压缩方法在空气耦合超声检测中的应用效果.

     

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出版历程
  • 收稿日期:  2014-01-19
  • 网络出版日期:  2015-01-20

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