Damage localization and quantification of composite stratified beam Structures using residual force method

A Behtani,A Bouazzouni,M Abdel Wahab,S Khatir,Y-L Zhou,S Tiachacht

doi:10.1088/1742-6596/842/1/012028

A Behtani, A Bouazzouni + Show 4 more

Open Access

https://doi.org/10.1088/1742-6596/842/1/012028

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Abstract

In this paper, the problem of using measured modal parameters to detect and locate damage in beam composite stratified structures with four layers of graphite/epoxy [0°/902°/0°] is investigated. A technique based on the residual force method is applied to composite stratified structure with different boundary conditions, the results of damage detection for several damage cases demonstrate that using residual force method as damage index, the damage location can be identified correctly and the damage extents can be estimated as well.

Highlights

The damage assessment of structure using vibration analysis based data has been receiving significant attention for the last three decades
This work presents a force residual method for damage detection and localization of stratified beam structure with four layers of graphite/epoxy [0°/902°/0°] discretised in 20 elements with different boundary conditions using FEM based on Matlab programming
Numerical applications To evaluate the performance of the proposed residual force method, we consider a stratified composite beam Graphite/epoxy [0°/902°/0°] discretized into 20 finite elements SI12 as shown in Figure 2 [40]

Summary

Introduction

The damage assessment of structure using vibration analysis based data has been receiving significant attention for the last three decades. [32] used finite element method to build snapshot matrix based on proper orthogonal decomposition with radial basis function (POD-RBF) combined with optimization method for damage identification of composite beam structure using vibration data. The finite element method combined with optimization methods for detecting and locating damage of composite structure based on objective function using several objective functions was introduced by Khatir and al. The damage detection and localization approach based on the residual forces method was used successfully to locate structural damage based on analytical model for damage identification. This work presents a force residual method for damage detection and localization of stratified beam structure with four layers of graphite/epoxy [0°/902°/0°] discretised in 20 elements with different boundary conditions using FEM based on Matlab programming

The residual forces method

Estimate damage Real Damage

Estimate Damage Real Damage

Conclusion