基于Barker码的一发两收超声TOFD技术在检测倾斜裂纹中的应用
Application of Ultrasoinc TOFD Technology with One Transmitter and Two Receivers Based on Barker Code in Detecting Inclined Cracks
摘 要
在传统超声TOFD技术的基础上，将Barker码激励与一发两收TOFD技术结合起来，根据两个接收探头接收声波的声程差，准确定位裂纹的两个端点，进而定量地检测倾斜裂纹。有限元仿真结果表明，基于Barker码匹配压缩后的衍射回波信号的精度可达到0.01 μs，检测倾斜裂纹角度的平均误差为1.62°。
超声衍射时差法
倾斜裂纹
巴克码激励
NDT
TOFD
inclined crack
barker code excitation
Abstract
This paper combined the Barker code excitation with the modified TOFD with double receivers on the basis of traditional TOFD technique. Based on the travelling times received by the two receivers, the positions of two crack tips were acquired to quantitatively evaluate inclined cracks. FEM simulation results showed that the time resolution of the signal compressed by Barker code excitation could be up to 0.01 μs and the average error of the estimated orientation was 1.62°.
中图分类号 TG115.28 DOI 10.11973/wsjc201712009
所属栏目 试验研究
基金项目 国家自然科学基金资助项目（11574072，11274091）；江苏省重点研发计划项目（BE2016056）
收稿日期 2017/5/15
修改稿日期
网络出版日期
作者单位点击查看
联系人作者韩庆邦(hqb0092@163.com)
备注王鹏(1993-),男,硕士,研究方向为通信与信息系统
引用该论文: WANG Peng,HAN Qingbang,JIANG Xueping,ZHENG Hao,XU Zhouchen. Application of Ultrasoinc TOFD Technology with One Transmitter and Two Receivers Based on Barker Code in Detecting Inclined Cracks[J]. Nondestructive Testing, 2017, 39(12): 40～43
王鹏,韩庆邦,姜学平,郑豪,许洲琛. 基于Barker码的一发两收超声TOFD技术在检测倾斜裂纹中的应用[J]. 无损检测, 2017, 39(12): 40～43
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参考文献
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【10】丛森, 刚铁, 张佳莹,等. LFM激励信号在超声TOFD检测中的应用[J]. 焊接学报, 2015, 36(2):63-66.
【11】NOWICKI A, LITNIEWSKI J, SECOMSKI W, et al. Estimation of ultrasonic attenuation in a bone using coded excitation[J]. Ultrasonics, 2003, 41(8):615-621.
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【13】BABY S, BALASUBRAMANIAN T, PARDIKAR R J, et al. Time-of-flight diffraction (TOFD) technique for accurate sizing of surfae-breaking cracks[J]. Insight-Non-Destructive Testing and Condition Monitoring, 2003, 45(6):426-430.
【2】SILK M G. Changes in ultrasonic defect location and sizing[J]. NDT International, 1987, 20(1):9-14.
【3】CIORAU P. Critical comments on detection and sizing linear defects by conventional tip-echo diffraction and mode-converted ultrasonic techniques for piping and pressure vessel welds[J]. NDT. The E-Journal of Nondestructive Testing, 2006,11(5):1-7.
【4】HOSEINI M R, WANG X, ZUO M J. Modified relative arrival time technique for sizing inclined cracks[J]. Measurement, 2014, 50(50):86-92.
【5】陈婷婷. 基于超声TOFD-LWE检测方法的缺陷识别与研究[D]. 哈尔滨:哈尔滨工程大学, 2011.
【6】康达,张树潇,金士杰,等. 基于几何方法的焊缝倾斜裂纹TOFD定量检测[J].无损检测,2016, 38(4):1-5.
【7】ZHANG H, WU S, TA D, et al. Coded excitation of ultrasonic guided waves in long bone fracture assessment[J]. Ultrasonics, 2014, 54(5):1203-1209.
【8】DE M A, DE N S, HUANG Y, et al. Code design to optimize radar detection performance under accuracy and similarity constraints[J]. IEEE Transactions on Signal Processing, 2008, 56(11):5618-5629.
【9】周正干, 马保全, 孙志明,等. 相位编码脉冲压缩方法在空气耦合超声检测信号处理中的应用[J]. 机械工程学报, 2014, 50(2):48-54.
【10】丛森, 刚铁, 张佳莹,等. LFM激励信号在超声TOFD检测中的应用[J]. 焊接学报, 2015, 36(2):63-66.
【11】NOWICKI A, LITNIEWSKI J, SECOMSKI W, et al. Estimation of ultrasonic attenuation in a bone using coded excitation[J]. Ultrasonics, 2003, 41(8):615-621.
【12】宋小春, 王亚午, 涂君,等. 基于超声衍射时差法的缺陷检测技术仿真分析[J]. 传感器与微系统, 2015, 34(5):55-58.
【13】BABY S, BALASUBRAMANIAN T, PARDIKAR R J, et al. Time-of-flight diffraction (TOFD) technique for accurate sizing of surfae-breaking cracks[J]. Insight-Non-Destructive Testing and Condition Monitoring, 2003, 45(6):426-430.
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