Numerical analyses on influence of damage configuration on vibration parameters for lattice sandwich plate

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part II

Article type: Research Article

Authors: Tian, Shuxia^a | Chen, Zhenmao^{a; *} | Chen, Lingli^a | Zhang, Dongli^a

Affiliations: [a] MOE Key Laboratory for Strength and Vibration, School of Aerospace, Xi'an Jiaotong University, Xi'an, 710049, China

Correspondence: [*] Corrersponding author. Tel.: +86 29 82668736; Fax: +86 29 82668736; E-mail: chenzm@mail.xjtu.edu.cn

Abstract: Though many methods exist for detecting damage in a structure, few of them can be used to identify the debonding defect between the surface and inner layer of a lattice truss sandwich plate. In this paper, a vibration signal based nondestructive testing method using Uniform Load Surface (ULS) curvature is applied to detect the delamination defects of the lattice sandwich plate. The feasibility of the approach is investigated through numerical simulation by using commercial software for different damage configurations. The numerical results show that there is a good possibility to detect delamination defects in the lattice sandwich plate from vibration signals by using the ULS curvature strategy.

Keywords: Lattice sandwich plate, delamination defect, modal shapes, uls curvature, defect detection

DOI: 10.3233/JAE-2010-1285

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 1565-1572, 2010