| Damage identification of tube bundles with crack subjected to cross-flow and loose support | |
Lu LL(路玲玲)1,2 ; Lai J(赖姜)3; Yang, Shihao3; Song HW(宋宏伟)1,2; Sun, Lei3
| |
| Corresponding Author | Lai, Jiang([email protected]) |
| Source Publication | MECHANICAL SYSTEMS AND SIGNAL PROCESSING
 |
| 2022-02-01 | |
| Volume | 164Pages:14 |
| ISSN | 0888-3270 |
| Abstract | Dynamic characteristics of tube bundles with crack subjected to cross-flow and nonlinear loose support are very complicated, making the damage identification more difficult, and the information of healthy tube bundles could not be used in the damage identification process. In this paper, a baseline-free damage detection method is proposed to detect the crack damage of tube bundles subjected to cross-flow and loose support. Two damage indexes, based on the root mean square value of structural vibration responses and the gapped smoothing method, are proposed to identify the damage location and damage extent. Cases with different damage locations and damage extents are considered. The influences of the flow pitch velocity, loose support and the number of measure points on the effectiveness of the method are also discussed. The results showed that the index based on the normalized values of root mean square displacement and velocity responses can identify the damage location accurately within the flow pitch velocity range considered in this study. An improved index based on the normalized values of root mean square displacement and velocity responses and a parameter reflecting damage extent can identify the damage extent when the flow pitch velocity is small. When the flow pitch velocity is large, the effectiveness of the improved index is affected. Meanwhile the loose support location also has an influence on the proposed method, especially when the flow pitch velocity is large. Number of measure points has little influence when the damage extent is larger than 5%. |
| Keyword | Damage identification Baseline-free Nonlinear dynamics Tube bundles Two-phase flow |
| DOI | 10.1016/j.ymssp.2021.108293 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000687239500003 |
| WOS Keyword | FATIGUE-CRACK ; BEAM ; INSTABILITY |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Mechanical |
| Funding Project | National Natural Science Foundation of China[11972033] ; National Natural Science Foundation of China[12072336] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] |
| Funding Organization | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Lai, Jiang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87366 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Nucl Power Inst China, Chengdu 610213, Peoples R China |
| Recommended Citation GB/T 7714 | Lu LL,Lai J,Yang, Shihao,et al. Damage identification of tube bundles with crack subjected to cross-flow and loose support[J]. MECHANICAL SYSTEMS AND SIGNAL PROCESSING,2022,164:14.Rp_Au:Lai, Jiang |
| APA | 路玲玲,赖姜,Yang, Shihao,宋宏伟,&Sun, Lei.(2022).Damage identification of tube bundles with crack subjected to cross-flow and loose support.MECHANICAL SYSTEMS AND SIGNAL PROCESSING,164,14. |
| MLA | 路玲玲,et al."Damage identification of tube bundles with crack subjected to cross-flow and loose support".MECHANICAL SYSTEMS AND SIGNAL PROCESSING 164(2022):14. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021F428.pdf（2180KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment