Residual Modal Energy Evaluating of Fatigue Damaged Composite Structure

Amrane, Mohamed Nadir; Sidoroff, F.

doi:10.5755/j01.mech.17.1.202

Cited by 7 publications

(8 citation statements)

References 2 publications

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“…Khatir et al [20,21] have used MAC, COMAC and LFCER for detecting and locating damage in beam-like structures using vibration analysis. Amrane and Sidoroff [22] dealt with the evaluation of the residual modal energy in glass/epoxy unidirectional fibrous composite beam at a desired state using vibration analysis, while Khatir et al [23] worked on the damage detection and localization based on vibration analysis using Bat algorithm on thin plates using vibration analysis.…”

Section: Introductionmentioning

confidence: 99%

Multiple damage detection and localization in beam-like and complex structures using co-ordinate modal assurance criterion combined with firefly and genetic algorithms

Wahab¹,

Khatir²,

Tehami³

et al. 2016

J. vibroeng.

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Abstract. Damage detection and localization in civil engineering constructions using dynamic analysis has become an important topic in recent years. This paper presents a methodology based on non-destructive detection, localization and quantification of multiple damages in simple and continuous beams, and a more complex structure, namely two-dimensional frame structure. The proposed methodology makes used of Firefly Algorithm and Genetic Algorithm as optimization tools and the Coordinate Modal Assurance Criterion as an objective function. The results show that the proposed combination of Coordinate Modal Assurance Criterion and Firefly Algorithm or Genetic Algorithm can be easily used to identify multiple local structural damages in complex structures. However, the convergence rate becomes slower for the case of multiple damages compared to the case of single damage. The effect of noise on the algorithm is further investigated. It is found that the proposed technique is able to detect the damage location and its severity with high accuracy in the presence of noise, although the convergence rate became slower than in the case when no noise is present. It is also found that the convergence rate of Firefly Algorithm is much faster than that of Genetic Algorithm.

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Section: Introductionmentioning

confidence: 99%

Multiple damage detection and localization in beam-like and complex structures using co-ordinate modal assurance criterion combined with firefly and genetic algorithms

Wahab¹,

Khatir²,

Tehami³

et al. 2016

J. vibroeng.

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show abstract

“…The flexural vibrations of beams are analyzed by the finite element method [20], using the stiffness matrix and mass matrix of beam element with two degrees of freedom per node as shown in Fig. 2, where:…”

Section: Finite Element Methods In the Dynamic Analysismentioning

confidence: 99%

“…where q is the vector of degrees of freedom. For the first case [K] is the global stiffness matrix but for the second case [K] = [KD], where [KD] is the global stiffness matrix with damage, that takes into account the decrease in the rigidity of the structure when the loading rates change [20].…”

Section: Resolution Of the Eigenvalue Problemmentioning

confidence: 99%

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Structural Damage Detection by Using Finite Element Method as Function of Length

Bensahal¹,

Amrane²,

Chabane³

et al. 2013

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The work concerned exactly a structural damage. In this paper also involves the effect of length on the damping of the composite. The calculation of laminate damping is performed by use of a strain energy method. The modal analysis of the structure for different loading rates is based on the analytical method used to solve the equation of free vibrations. The difference between strain energies for both cases (damaged and undamaged) are calculated by the finite element method. The structural damping of the different beams is evaluated from these energies. The results deduced from the damping by finite element analysis for the first three modes that the evaluation of laminate damping takes account the variation of the structural damping η with lengths. This study shows clearly the decrease of one of dynamic characteristics especially the frequency when the loading rate increases for all lengths studied; this should have high utility as a decisive test for non-destructive damage detection.

show abstract

Section: Introductionmentioning

confidence: 99%

Republished Paper. Multiple damage detection and localization in beam-like and complex structures using co-ordinate modal assurance criterion combined with firefly and genetic algorithms

Khatir¹,

Tehami²,

Khatir³

et al. 2018

J. vibroeng.

View full text Add to dashboard Cite

Damage detection and localization in civil engineering constructions using dynamic analysis has become an important topic in recent years. This paper presents a methodology based on non-destructive detection, localization and quantification of multiple damages in simple and continuous beams, and a more complex structure, namely two-dimensional frame structure. The proposed methodology makes used of Firefly Algorithm and Genetic Algorithm as optimization tools and the Coordinate Modal Assurance Criterion as an objective function. The results show that the proposed combination of Coordinate Modal Assurance Criterion and Firefly Algorithm or Genetic Algorithm can be easily used to identify multiple local structural damages in complex structures. However, the convergence rate becomes slower for the case of multiple damages compared to the case of single damage. The effect of noise on the algorithm is further investigated. It is found that the proposed technique is able to detect the damage location and its severity with high accuracy in the presence of noise, although the convergence rate became slower than in the case when no noise is present. It is also found that the convergence rate of Firefly Algorithm is much faster than that of Genetic Algorithm.

show abstract

Residual Modal Energy Evaluating of Fatigue Damaged Composite Structure

Cited by 7 publications

References 2 publications

Multiple damage detection and localization in beam-like and complex structures using co-ordinate modal assurance criterion combined with firefly and genetic algorithms

Multiple damage detection and localization in beam-like and complex structures using co-ordinate modal assurance criterion combined with firefly and genetic algorithms

Structural Damage Detection by Using Finite Element Method as Function of Length

Republished Paper. Multiple damage detection and localization in beam-like and complex structures using co-ordinate modal assurance criterion combined with firefly and genetic algorithms

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