Finite element analysis for the damage detection of light pole structures

Qixiang Tang; Tzuyang Yu; Mark Jen

doi:10.1117/12.2075689

1 April 2015 Finite element analysis for the damage detection of light pole structures

Qixiang Tang, Tzuyang Yu, Mark Jen

Proceedings Volume 9437, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015; 943711 (2015) https://doi.org/10.1117/12.2075689
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

Failures of aging light poles can jeopardize the safety of residents and damage adjacent structures. The need for reliable and efficient damage detection methods is raised. Any change in structural properties (e.g., mass, stiffness and damping) can lead to differences in the dynamic response of structures (i.e., modal frequencies). As a result, changes in dynamic responses can be used as indicators for damage detection. In this study, relationships between artificial damages and modal frequencies are determined by investigating the modal frequencies of intact and damaged light pole models using the finite element method (FEM). Finite element (FE) models were built with 5,529 C3D8R elements in ABAQUSR. New parameters (sensitive and insensitive modes) were defined and used to evaluate the sensitivity of the first ten modes of FE models. It is found that combinations of sensitive and insensitive modes are unique for each damage location and can be used to locate artificial damages in light pole models. Empirical equations are proposed to quantify damage level and damage size.

Citation Download Citation

Qixiang Tang, Tzuyang Yu, and Mark Jen "Finite element analysis for the damage detection of light pole structures", Proc. SPIE 9437, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015, 943711 (1 April 2015); https://doi.org/10.1117/12.2075689

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