Parametric study of using only static response in structural damage detection

Abdo, Mohamed Abdel-Basset

doi:10.1016/j.engstruct.2011.09.027

Cited by 79 publications

(62 citation statements)

References 16 publications

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“…The method proposed by Abdo (2012) can be used for damage location from static measurements. The major disadvantage of this method is that damage is detected from comparison between damaged and undamaged structures.…”

Section: Comparison Among Methodsmentioning

confidence: 99%

Numerical damage identification of structures by observability techniques based on static loading tests

Nogal

Galant

Coderque

et al. 2015

Structure and Infrastructure Engineering

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This paper proposes the application of the observability techniques to deal with damage detection in bridges from their structural response under static loading tests. Unlike previous works based on a symbolic approach to this technique, this paper presents its first numerical application. With this aim, a novel algorithm is presented, which reduces the unavoidable numerical errors produced by the lack of precision of computers. To achieve an adequate accuracy in estimations, this numerical algorithm is complemented with another method to define the proper geometry of the corresponding finite element model. The comparison of the observability technique with other existing methods presented in the literature shows that the number of required measurements is significantly lower. Furthermore, contrary to other analyzed methods, no information from the undamaged structure is required. The accuracy in estimations provided by the proposed method is very high as the differences with actual values are lower than 1%.

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Section: Comparison Among Methodsmentioning

confidence: 99%

Numerical damage identification of structures by observability techniques based on static loading tests

Nogal

Galant

Coderque

et al. 2015

Structure and Infrastructure Engineering

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“…The next issue is that modal data for some stiff civil structures are difficult to be measured accurately, especially for high-order modes. In view of this, the static detection algorithms [25][26][27][28][29][30][31][32][33][34] also attracted much attention in civil engineering area in recent years due to their simplicity for implementation. However, most of these methods need a detailed finite element model (FEM) or the baseline parameters of the intact system.…”

Section: Introductionmentioning

confidence: 99%

Damage localization for beam structure by moving load

Yang

Liu

Sun

et al. 2017

Advances in Mechanical Engineering

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A static algorithm is presented in this article for damage localization in beam structures by moving load. Central to the damage localization approach is the combination of the moving load technique and the pure bending theory. The first advantage of the presented algorithm is that only a few sensors are needed in the static test. The second advantage of the presented algorithm is that only the deflection parameters of the current structure are needed in damage localization process. The proposed method is applied to a simple supported beam and its feasibility is verified using damage simulations. It was found that the defect location can be identified by inspecting the sudden increase in the curvature of the deflection curve for the beam. The results showed that the presented algorithm is effective on the localization of single damage or multiple damages in the beam structure without baseline data.

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“…In most cases, measurement errors are assumed to follow the normal distribution with zero mean. [6,34] One way to mitigate the adverse effect of measurement errors is to use weight factors. [5] Each displacement was measured repeatedly, and the variance in those measured values was calculated.…”

Section: Introductionmentioning

confidence: 99%

Static structural system identification for beam-like structures using compatibility conditions

Lei

Coderque

2017

Struct Control Health Monit

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SummaryDue to the inevitable noise existing in the measured responses, structural system identification is often a challenging task in terms of the accuracy of the estimations. Structural system identification by the observability method, which is characterized by the analysis of null spaces, is a powerful tool to determine the observability of structural parameters. However, it did not cope well with measurement errors so far. In this paper, for the first time, functional relations among displacements, denoted by the term compatibility conditions, in beam-like structures are derived by the observability method. Then, compatibility conditions are imposed in an optimization procedure to minimize the discrepancy between the measured response and the compatible one. The compatible response obtained by the optimization is used to obtain the final estimations of the parameters. In a simply supported bridge example, the proposed method is thoroughly evaluated regarding the number of measurements, error levels, and load cases. In an example of a continuous bridge, different load cases are used to estimate the bending stiffnesses of different zones. The accuracy and the efficacy of the proposed method are verified by the numerical results.

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Parametric study of using only static response in structural damage detection

Cited by 79 publications

References 16 publications

Numerical damage identification of structures by observability techniques based on static loading tests

Numerical damage identification of structures by observability techniques based on static loading tests

Damage localization for beam structure by moving load

Static structural system identification for beam-like structures using compatibility conditions

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