Baseline-free damage identification of metallic sandwich panels with truss core based on vibration characteristics | |
Lu LL(路玲玲); Song HW(宋宏伟); Yuan W(袁武); Huang CG(黄晨光); Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. | |
发表期刊 | STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL |
2017 | |
卷号 | 16期号:1页码:24-38 |
ISSN | 1475-9217 |
摘要 | A baseline-free damage identification method is proposed to identify damages in metallic sandwich panels with truss core in the article. The method is based on flexibility matrix and gapped smoothing method, with damage index defined DIm. The weight coefficient m is introduced to consider the effect of damages on both low-order modes and high-order modes. Numerical simulations and experiments are conducted to evaluate the present method. Besides, damage index DIm* is also defined by processing DIm with Teager energy operator, and comparisons between DIm and DIm* are also carried out. Results show that the proposed method is effective in detecting single damage and multiple damages of the same or different extent. The weight coefficient m plays a very important role in identification of multiple damages of different styles. When comparing with DIm*, it is found that the present index DIm is better at suppressing the singularity caused by contact nodes and detecting of multiple damages which contain small or slight damages. |
关键词 | Sandwich Panel With Truss Core Damage Identification Gapped Smoothing Method Teager Energy Operator Cell Missing |
DOI | 10.1177/1475921716660055 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000391459300002 |
关键词[WOS] | Sandwich panel with truss core ; damage identification ; gapped smoothing method ; Teager energy operator ; cell missing |
WOS研究方向 | Engineering ; Instruments & Instrumentation |
WOS类目 | Engineering, Multidisciplinary ; Instruments & Instrumentation |
项目资助者 | National Natural Science Foundation of China [11472276, 11332011, 11502268] ; Defense Industrial Technology Development Program |
课题组名称 | LMFS热结构耦合力学 |
论文分区 | 一类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/59961 |
专题 | 流固耦合系统力学重点实验室 |
通讯作者 | Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. |
推荐引用方式 GB/T 7714 | Lu LL,Song HW,Yuan W,et al. Baseline-free damage identification of metallic sandwich panels with truss core based on vibration characteristics[J]. STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL,2017,16,1,:24-38. |
APA | 路玲玲,宋宏伟,袁武,黄晨光,&Song, HW .(2017).Baseline-free damage identification of metallic sandwich panels with truss core based on vibration characteristics.STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL,16(1),24-38. |
MLA | 路玲玲,et al."Baseline-free damage identification of metallic sandwich panels with truss core based on vibration characteristics".STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL 16.1(2017):24-38. |
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