表面裂纹板的振动能量流:正弦载荷下的损伤检测方法

IF 3.8 3区 工程技术 Q1 MECHANICS
Jialin Cui , Xianqiang Qu , Chunwang Lv , Jinbo Du
{"title":"表面裂纹板的振动能量流:正弦载荷下的损伤检测方法","authors":"Jialin Cui ,&nbsp;Xianqiang Qu ,&nbsp;Chunwang Lv ,&nbsp;Jinbo Du","doi":"10.1016/j.ijsolstr.2025.113450","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the vibrational energy flow characteristics of surface-cracked plates under sinusoidal force distribution and proposes an innovative crack identification method based on energy flow analysis. The surface crack is modeled as a line spring, and the vibrational energy flow characteristics of the cracked plate are derived by incorporating the additional rotation discontinuity caused by the crack. The results reveal that no energy input occurs below the critical frequency for both intact and cracked plates. Above the critical frequency, the input energy flow decreases with increasing frequency but increases with the number of half-waves. The depth of the crack significantly influences the fluctuation amplitude of the input energy flow, with deeper cracks causing greater fluctuations. Furthermore, while the energy flow propagation remains constant in the far-field region, dynamic transformations of energy flow components occur in the near-field region. A crack identification method based on the normalized input energy flow contour map is proposed, enabling accurate determination of crack location and depth using a single measurement point. Numerical and experimental results demonstrate that under an excitation frequency of 1000 Hz and a single half-wave condition, the method achieves 100 % accuracy in identifying a crack located at 0.2 m with a relative depth of 0.4. This approach significantly enhances detection efficiency and reduces implementation costs compared to traditional methods. The findings provide a new theoretical foundation for crack identification and contribute to the optimization of structural health monitoring techniques, offering broad potential for engineering applications.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"318 ","pages":"Article 113450"},"PeriodicalIF":3.8000,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Vibrational energy flow in surface-cracked plates: A method for damage detection under sinusoidal loading\",\"authors\":\"Jialin Cui ,&nbsp;Xianqiang Qu ,&nbsp;Chunwang Lv ,&nbsp;Jinbo Du\",\"doi\":\"10.1016/j.ijsolstr.2025.113450\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the vibrational energy flow characteristics of surface-cracked plates under sinusoidal force distribution and proposes an innovative crack identification method based on energy flow analysis. The surface crack is modeled as a line spring, and the vibrational energy flow characteristics of the cracked plate are derived by incorporating the additional rotation discontinuity caused by the crack. The results reveal that no energy input occurs below the critical frequency for both intact and cracked plates. Above the critical frequency, the input energy flow decreases with increasing frequency but increases with the number of half-waves. The depth of the crack significantly influences the fluctuation amplitude of the input energy flow, with deeper cracks causing greater fluctuations. Furthermore, while the energy flow propagation remains constant in the far-field region, dynamic transformations of energy flow components occur in the near-field region. A crack identification method based on the normalized input energy flow contour map is proposed, enabling accurate determination of crack location and depth using a single measurement point. Numerical and experimental results demonstrate that under an excitation frequency of 1000 Hz and a single half-wave condition, the method achieves 100 % accuracy in identifying a crack located at 0.2 m with a relative depth of 0.4. This approach significantly enhances detection efficiency and reduces implementation costs compared to traditional methods. The findings provide a new theoretical foundation for crack identification and contribute to the optimization of structural health monitoring techniques, offering broad potential for engineering applications.</div></div>\",\"PeriodicalId\":14311,\"journal\":{\"name\":\"International Journal of Solids and Structures\",\"volume\":\"318 \",\"pages\":\"Article 113450\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2025-05-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Solids and Structures\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0020768325002367\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MECHANICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Solids and Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0020768325002367","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MECHANICS","Score":null,"Total":0}
引用次数: 0

摘要

研究了正弦力分布下表面裂纹板的振动能量流特性,提出了一种基于能量流分析的裂纹识别方法。将表面裂纹建模为线弹簧,考虑裂纹引起的附加旋转不连续,推导出裂纹板的振动能流特性。结果表明,无论是完整板还是裂纹板,都没有低于临界频率的能量输入。在临界频率以上,输入能量流随频率的增加而减小,但随半波数的增加而增大。裂纹深度显著影响输入能量流波动幅度,裂纹越深,波动幅度越大。此外,当能量流在远场区域传播保持不变时,能量流分量在近场区域发生了动态转换。提出了一种基于归一化输入能量流等高线图的裂纹识别方法,利用单个测点即可准确确定裂纹的位置和深度。数值和实验结果表明,在激励频率为1000 Hz、单半波条件下,该方法对相对深度为0.4、深度为0.2 m的裂纹的识别精度达到100%。与传统方法相比,该方法显著提高了检测效率,降低了实施成本。研究结果为裂缝识别提供了新的理论基础,有助于结构健康监测技术的优化,具有广阔的工程应用潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Vibrational energy flow in surface-cracked plates: A method for damage detection under sinusoidal loading
This study investigates the vibrational energy flow characteristics of surface-cracked plates under sinusoidal force distribution and proposes an innovative crack identification method based on energy flow analysis. The surface crack is modeled as a line spring, and the vibrational energy flow characteristics of the cracked plate are derived by incorporating the additional rotation discontinuity caused by the crack. The results reveal that no energy input occurs below the critical frequency for both intact and cracked plates. Above the critical frequency, the input energy flow decreases with increasing frequency but increases with the number of half-waves. The depth of the crack significantly influences the fluctuation amplitude of the input energy flow, with deeper cracks causing greater fluctuations. Furthermore, while the energy flow propagation remains constant in the far-field region, dynamic transformations of energy flow components occur in the near-field region. A crack identification method based on the normalized input energy flow contour map is proposed, enabling accurate determination of crack location and depth using a single measurement point. Numerical and experimental results demonstrate that under an excitation frequency of 1000 Hz and a single half-wave condition, the method achieves 100 % accuracy in identifying a crack located at 0.2 m with a relative depth of 0.4. This approach significantly enhances detection efficiency and reduces implementation costs compared to traditional methods. The findings provide a new theoretical foundation for crack identification and contribute to the optimization of structural health monitoring techniques, offering broad potential for engineering applications.
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
CiteScore
6.70
自引率
8.30%
发文量
405
审稿时长
70 days
期刊介绍: The International Journal of Solids and Structures has as its objective the publication and dissemination of original research in Mechanics of Solids and Structures as a field of Applied Science and Engineering. It fosters thus the exchange of ideas among workers in different parts of the world and also among workers who emphasize different aspects of the foundations and applications of the field. Standing as it does at the cross-roads of Materials Science, Life Sciences, Mathematics, Physics and Engineering Design, the Mechanics of Solids and Structures is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from the more classical problems of structural analysis to mechanics of solids continually interacting with other media and including fracture, flow, wave propagation, heat transfer, thermal effects in solids, optimum design methods, model analysis, structural topology and numerical techniques. Interest extends to both inorganic and organic solids and structures.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信