| 杨慧泉,伍剑波,夏慧,潘小凤,陈建,刘昭廷,罗阳,侯永宾.压电超声SH导波管道测厚方法优化及系统设计[J].,2024,43(5):1102-1112 |
| 压电超声SH导波管道测厚方法优化及系统设计 |
| Optimization and system design of piezoelectric ultrasonic SH guided wave method in pipeline wall thickness measurement |
| 投稿时间：2023-10-29 修订日期：2024-09-01 |
| 中文摘要: |
| 为深入探究水平剪切(SH)波在有界平板中的传播特性，该研究从SH波的基本理论出发，根据无限大平板中传播的SH0波的非频散特性，开展有界平板结构中SH0波传播特性的仿真分析和实验验证。结果表明，在频厚积参数为3.0 MHz·mm的激励条件下，有界平板结构中传播的SH0波能够保持优良的非频散特性。在此研究基础上，针对利用SH导波在测厚研究中存在的耦合效果不佳、回波信号杂乱等共性问题，借助平板型波导条设计了一套基于压电超声SH0导波的管道壁厚测量装置，并基于该测厚设备开展了管道壁厚检测实验。实验结果表明，所设计的“预固定”加“二次固定”耦合方法有效解决了耦合难题；基于该测厚装置提出了忽略首次回波信号的管道壁厚计算方法，该方法能够从原始回波信号中更加精确地计算出壁厚值，将测量值精度误差控制在0.05 mm以内。该文提出的研究方法为工业管道的壁厚检测和长期在线监测提供了新的解决思路，在工程实践中具有重要的参考价值和指导意义。 |
| 英文摘要: |
| In order to investigate the propagation characteristics of Shear Horizontal (SH) waves in a bounded plate, the study started from the basic theory of SH waves. According to the non-dispersive characteristics of SH0 waves propagating in an infinite plate, simulation analysis and experimental verification of the propagation characteristics of SH0 waves in a bounded plate structure were carried out. The results show that the SH0 wave propagating in the bounded plate structure can maintain excellent non-dispersive characteristics under the excitation condition of 3.0MHz·mm. On this basis, a set of pipeline wall thickness measuring device based on piezoelectric ultrasonic SH0 guided wave is designed, aiming at the common problems such as coupling difficulty and chaotic echo signal in the study of thickness measurement using SH guided wave. The experimental results show that the designed coupling device of "pre-fixed" and "secondary fixed" can effectively solve the coupling problems. Based on the device, a calculation method of pipe wall thickness ignoring the first echo signal is proposed, which can accurately calculate the wall thickness from the original echo signal and keep the error between the measured value and the real value within 0.05mm. The research method proposed in this paper provides a new solution for pipeline thickness detection and on-line monitoring of industrial pipelines, and has important reference value and guiding significance in engineering field. |
| DOI：10.11684/j.issn.1000-310X.2024.05.020 |
| 中文关键词: 有界平板结构 压电超声导波 SH波传播特性 管道壁厚检测 |
| 英文关键词: Bounded plate structure Piezoelectric ultrasonic guided wave SH wave propagation characteristics Pipeline wall thickness detection |
| 基金项目:国家重点研发计划项目“高温蠕变无损检测与损伤状态评价技术研究及应用”(2022YFF0605600)；四川省区域创新合作项目“页岩油压裂装备冲蚀在线监测关键技术研究与系统研制”(2023YFQ0060)；四川省科技计划项目“石化换热管电磁层析成像检测关键技术研究与设备研发”(2023YFS0413)。 |
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