IMECH-IR  > 流固耦合系统力学重点实验室
Experimental investigation of unbound nodes identification for metallic sandwich panels with truss core
Lu LL(路玲玲); Song HW(宋宏伟); 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.; Song, HW (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
Source PublicationCOMPOSITE STRUCTURES
2017-03-01
Volume163Pages:248-256
ISSN0263-8223
AbstractExperimental investigation of metallic pyramidal sandwich panels with truss core in the cases of different extent and location of unbound nodes damages are conducted and a baseline-free damage identification method based on flexible matrix gapped smoothing method and Teager energy operator is used. The influences of sensor density and Teager energy operator on the damage identification are also discussed. Moreover a 0-1 unbound nodes identification method is also proposed to capture the shape and size of the unbound nodes damage zone. The results show that the proposed baseline-free method could identify the unbound nodes damage of metallic sandwich panels with truss core effectively. Increasing sensor density is beneficial for damage identification and there is a critical sensor density for the identification of unbound nodes damage. Teager energy operator plays a very important role in suppressing fluctuations and singularities caused by non-damage factors such as boundary condition noise and shaker. The identified damage zone obtained by the 0-1 method is in accordance with the actual damage zone. (C) 2016 Elsevier Ltd. All rights reserved.
KeywordSandwich Panel With Truss Core Damage Identification Unbound Nodes Teager Energy Operator
DOI10.1016/j.compstruct.2016.12.028
Indexed BySCI ; EI
Language英语
WOS IDWOS:000393931800019
WOS KeywordFREQUENCY-RESPONSE FUNCTIONS ; DAMAGE DETECTION ; STRUCTURAL PERFORMANCE ; BUCKLING BEHAVIOR ; FREE-VIBRATION ; LOCAL DAMAGE ; BEAMS ; TEMPERATURE ; FOAM
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Composites
Funding OrganizationNational Natural Science Foundation of China(11472276 ; National Defense Basic Scientific Research Program of China(JCKY2016130B009) ; 11332011 ; 11502268)
DepartmentLMFS热结构耦合力学 ; LMFS冲击与耦合效应(LHO)
Classification二类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60600
Collection流固耦合系统力学重点实验室
Corresponding AuthorSong, HW (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.; Song, HW (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
Lu LL,Song HW,Huang CG,et al. Experimental investigation of unbound nodes identification for metallic sandwich panels with truss core[J]. COMPOSITE STRUCTURES,2017,163:248-256.
APA 路玲玲,宋宏伟,黄晨光,Song, HW ,&Song, HW .(2017).Experimental investigation of unbound nodes identification for metallic sandwich panels with truss core.COMPOSITE STRUCTURES,163,248-256.
MLA 路玲玲,et al."Experimental investigation of unbound nodes identification for metallic sandwich panels with truss core".COMPOSITE STRUCTURES 163(2017):248-256.
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