Damage detection method based on defect mode for orthogonal grid stiffened panels

被引：4

作者：

Zheng, Kaihong ^{[1
]}

Zhu, Jueyong ^{[1
]}

Chen, Jiyue ^{[1
]}

Hameed, Muhammad Saqib ^{[1
,2
]}

Chen, Jianlin ^{[1
]}

Li, Zheng ^{[1
]}

机构：

[1] Peking Univ, Coll Engn, Dept Mech & Engn Sci, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China

[2] Univ Lahore, Lahore Sch Aviat, 1-KM Def Rd, Lahore, Pakistan

来源：

ENGINEERING STRUCTURES | 2023年 / 279卷

关键词：

Nondestructive testing; Orthogonal grid stiffened panel; Defect mode; Operational deformation shape; MULTIMODE WAVE-PROPAGATION; BAND-GAPS; PERIODIC STRUCTURES; RIBBED PLATES; TRANSMISSION; BEAMS; IDENTIFICATION; STATES;

D O I：

10.1016/j.engstruct.2023.115636

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Orthogonal grid stiffened panels are very useful structures widely utilized in many engineering applications. The nondestructive testing and evaluation (NDT&E) methods for these structures are still limited due to the complex vibration modes induced by stiffeners distributed in two periodic directions. A novel method based on defect modes to localize multiple damage in orthogonal grid stiffened panels is proposed in this research. Instead of utilizing defect modes in periodic structures to control vibration or wave propagation, it is proposed to analyze the influence of defects on the dynamic response properties of orthogonal grid stiffened panels. The damage-related modes can then be used to identify multiple damage. The method is successfully verified both numeri-cally and experimentally and shows great potential for broad engineering applications.

引用

页数：13

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