基于多晶材料超声背向散射信号时频域特征的识别方法
Identification method based on time and frequency domain features ofultrasonic backscattering signals of polycrystalline materials
摘 要
利用多晶材料微结构差异对超声波传播的影响特性，提出了一种计算超声回波信号特征量的算法，根据拉依达准则设定了识别阈值并编译了识别程序。采用所提方法对金属材料和陶瓷材料样品进行超声检测试验。试验结果表明，该方法可对材料和尺寸完全一致的样品实现准确识别。
超声背向散射
晶粒尺寸
拉依达准则
ultrasonic identification
ultrasonic backscattering
grain size
pauta criterion
Abstract
An algorithm for calculating the features of ultrasonic echo signals was proposed based on the influence characteristic of the microstructure difference of polycrystalline materials on ultrasonic waves. The recognition threshold was determined according to the Pauta criterion and the identification algorithm was compiled as an application program. The ultrasonic identification experiments were carried on the samples of metal materials and ceramic materials. The results showed the objects with the same materials and sizes can be identified accurately.
中图分类号 TG115.28 DOI 10.11973/wsjc202306003
所属栏目 试验研究
基金项目 装备预研共用技术项目（XXXXX040302）；国家自然科学基金项目（12174241）
收稿日期 2022/10/25
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备注刘昱(1995-),男,硕士研究生,主要研究方向为超声信号处理
引用该论文: LIU Yu,HE Xiping,HE Shengping,ZHOU Yue,WANG Jie. Identification method based on time and frequency domain features ofultrasonic backscattering signals of polycrystalline materials[J]. Nondestructive Testing, 2023, 45(6): 12～16
刘昱,贺西平,贺升平,周越,王杰. 基于多晶材料超声背向散射信号时频域特征的识别方法[J]. 无损检测, 2023, 45(6): 12～16
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参考文献
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【3】安笑笑, 贺西平, 卢康.基于加权欧氏距离的陶瓷器超声波辨识方法[J].电子学报, 2018, 46(7):1737-1741.
【4】贺西平, 刘小荣, 张宏普, 等.超声背向散射衰减系数谱的金属防伪辨识[J].陕西师范大学学报(自然科学版), 2014, 42(6):40-44.
【5】刘小荣, 贺西平, 张宏普, 等.金属材料的超声衰减特征及辨识的新方法[J].科学通报, 2016, 61(8):844-854.
【6】PALANICHAMY P, JOSEPH A, JAYAKUMAR T, et al.Ultrasonic velocity measurements for estimation of grain size in austenitic stainless steel[J].NDT & E International, 1995, 28(3):179-185.
【7】VIJAYALAKSHMI K, MUTHUPANDI V, JAYACHITRA R.Influence of heat treatment on the microstructure, ultrasonic attenuation and hardness of SAF 2205 duplex stainless steel[J].Materials Science and Engineering:A, 2011, 529:447-451.
【8】RICHTER A, BABICK F, RIPPERGER S.Polydisperse particle size characterization by ultrasonic attenuation spectroscopy for systems of diverse acoustic contrast in the large particle limit[J].The Journal of the Acoustical Society of America, 2005, 118(3):1394-1405.
【9】呼剑, 苏明旭, 蔡小舒, 等.高频宽带超声衰减谱表征纳米颗粒粒度的方法[J].化工学报, 2010, 61(11):2985-2991.
【10】YANG L, LI J, LOBKIS O I, et al.Ultrasonic propagation and scattering in duplex microstructures with application to titanium alloys[J].Journal of Nondestructive Evaluation, 2012, 31(3):270-283.
【11】于进伟, 赵舜仁.大数定律与中心极限定理之关系[J].高等数学研究, 2001, 4(1):15-17.
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