Monitoring and Identification of Structural Damages

Petkevicius, K.; Volkovas, V.

doi:10.5755/j01.mech.17.3.498

Cited by 10 publications

(7 citation statements)

References 20 publications

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“…Adams and Coppendale [18] have presented methods of identification of defects in a qualitative relation to the location of defect and its importance. Damage approach prediction in beam and plate structures with initiated damage was presented in the literature [19]. The results provided the basis for the development of diagnostics algorithms.…”

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

“…3 The space displacement of the stator Under the above load and constraints conditions, what can be seen from the Fig. 3 is that: the maximum deformation of the X direction is at the second conjugate surface of the bush's intracavity, and the value is 1.948 mm; the maximum deformation of the Y direction is at the first conjugate surface of the bush's intracavity, but near the second conjugate surface, and the value is 2.287 mm; the maximum deformation of the Z direction is at the contact department of the first conjugate surface and the second conjugate surface about the bush's intracavity, and the value is 2.287 mm; the maximun displacement vector of the bush is at the contact deparment of the first conjugate surface and the second conjugate surface about the bush's intracavity, and the value is 3.112 mm, the displacement vector of the shell is zero [9,10].…”

Section: X-displacementmentioning

confidence: 99%

Finite Element Analysis About Stator of Opposed Biconinal Cone Screw High-Pressure Seawater Hydraulic Pump

Wang

Cao

Zheng

et al. 2011

mech

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“…Two methods of damage assessment based on a relationship between modal strain energy and measured modal properties tailored to single damage cases [29] were used. Damage approach prediction in beam and plate structures with initiated damage were presented [30]. The results provided the basis for the development of diagnostics algorithms.…”

Section: Introductionmentioning

confidence: 99%

Damage detection and localization in composite beam structures based on vibration analysis

Khatir¹,

Belaidi²,

Serra³

et al. 2016

mech

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This paper presents an approach of inverse damage detection and localization based on model reduction. The problem is formulated as an inverse problem where an optimization algorithm is used to minimize the cost function expressed as the normalized difference between a frequency vector of the tested structure and its numerical model. A finite element model of bi-dimensional monolithic composite beam reinforced by a graphite-epoxy is used to define a numerical model of the tested structure in which different scenarios of damage are considered by stiffness reduction. Then, calculations are made on a reduced model built by the technique of proper orthogonal decomposition coupled by radial basis functions. The accuracy of the method is verified through different damage configurations. The results show that the developed algorithm is a feasible methodology of predicting damage in short computing time and with high accuracy. The effect of noise on the accuracy of the results is investigated in some cases for the structure under consideration

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Monitoring and Identification of Structural Damages

Cited by 10 publications

References 20 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

Finite Element Analysis About Stator of Opposed Biconinal Cone Screw High-Pressure Seawater Hydraulic Pump

Damage detection and localization in composite beam structures based on vibration analysis

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