基于厚度分级附加结构的损伤信号识别精度提高方法。

IF 4.1 2区物理与天体物理 Q1 ACOUSTICS

Ultrasonics Pub Date : 2025-09-23 DOI:10.1016/j.ultras.2025.107830

Haoming Hu, Hongyu Cui, Xiaokai Yin, Huanqiu Xu, Tiange Yang

{"title":"基于厚度分级附加结构的损伤信号识别精度提高方法。","authors":"Haoming Hu, Hongyu Cui, Xiaokai Yin, Huanqiu Xu, Tiange Yang","doi":"10.1016/j.ultras.2025.107830","DOIUrl":null,"url":null,"abstract":"<div><div>During S0 mode Lamb wave-based damage identification, structural boundary echoes significantly degrade localization accuracy. This study proposes a solution involving a thickness-gradient additional structure (TGAS) to control such S0 mode Lamb wave boundary echoes. Numerical simulations reveal that the additional structure achieves favorable boundary echo control across a wide frequency range. By analyzing the dispersion curves of variable-thickness plates, displacement responses and power flow, the mechanisms of boundary echo suppression are elucidated. An additional structure model is fabricated using wire-cutting technology, and experimental validation confirms the effective control of S0 mode Lamb wave boundary echoes by the additional structure, with a control effect significantly superior to that of clay.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"158 ","pages":"Article 107830"},"PeriodicalIF":4.1000,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Method for improving the accuracy of damage signal recognition based on the thickness-graded additional structure\",\"authors\":\"Haoming Hu, Hongyu Cui, Xiaokai Yin, Huanqiu Xu, Tiange Yang\",\"doi\":\"10.1016/j.ultras.2025.107830\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>During S0 mode Lamb wave-based damage identification, structural boundary echoes significantly degrade localization accuracy. This study proposes a solution involving a thickness-gradient additional structure (TGAS) to control such S0 mode Lamb wave boundary echoes. Numerical simulations reveal that the additional structure achieves favorable boundary echo control across a wide frequency range. By analyzing the dispersion curves of variable-thickness plates, displacement responses and power flow, the mechanisms of boundary echo suppression are elucidated. An additional structure model is fabricated using wire-cutting technology, and experimental validation confirms the effective control of S0 mode Lamb wave boundary echoes by the additional structure, with a control effect significantly superior to that of clay.</div></div>\",\"PeriodicalId\":23522,\"journal\":{\"name\":\"Ultrasonics\",\"volume\":\"158 \",\"pages\":\"Article 107830\"},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2025-09-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ultrasonics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0041624X25002677\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ACOUSTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ultrasonics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0041624X25002677","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ACOUSTICS","Score":null,"Total":0}

引用次数: 0

摘要

在基于50模态Lamb波的损伤识别中，结构边界回波严重降低了定位精度。本研究提出了一种利用厚度梯度附加结构（TGAS）来控制这种50模兰姆波边界回波的解决方案。数值模拟结果表明，该附加结构在较宽的频率范围内实现了良好的边界回波控制。通过分析变厚板的色散曲线、位移响应和功率流，阐明了边界回波抑制的机理。利用线切割技术制作了附加结构模型，实验验证了附加结构对S0模兰姆波边界回波的有效控制，其控制效果明显优于粘土。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Method for improving the accuracy of damage signal recognition based on the thickness-graded additional structure

During S0 mode Lamb wave-based damage identification, structural boundary echoes significantly degrade localization accuracy. This study proposes a solution involving a thickness-gradient additional structure (TGAS) to control such S0 mode Lamb wave boundary echoes. Numerical simulations reveal that the additional structure achieves favorable boundary echo control across a wide frequency range. By analyzing the dispersion curves of variable-thickness plates, displacement responses and power flow, the mechanisms of boundary echo suppression are elucidated. An additional structure model is fabricated using wire-cutting technology, and experimental validation confirms the effective control of S0 mode Lamb wave boundary echoes by the additional structure, with a control effect significantly superior to that of clay.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Ultrasonics 医学-核医学

CiteScore

7.60

自引率

19.00%

发文量

186

审稿时长

3.9 months

期刊介绍： Ultrasonics is the only internationally established journal which covers the entire field of ultrasound research and technology and all its many applications. Ultrasonics contains a variety of sections to keep readers fully informed and up-to-date on the whole spectrum of research and development throughout the world. Ultrasonics publishes papers of exceptional quality and of relevance to both academia and industry. Manuscripts in which ultrasonics is a central issue and not simply an incidental tool or minor issue, are welcomed. As well as top quality original research papers and review articles by world renowned experts, Ultrasonics also regularly features short communications, a calendar of forthcoming events and special issues dedicated to topical subjects.