A new technique to optimize the use of mode shape derivatives to localize damage in laminated composite plates

Moreno-García, P.; Santos, J.V. Araújo dos; Lopes, H.

doi:10.1016/j.compstruct.2013.09.050

Cited by 44 publications

(30 citation statements)

References 19 publications

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“…For example, Cao et al [98] explored the synergy between a wavelet transform and a Teager energy operator (TEO) to ameliorate the curvature mode shape, and also used two-dimensional curvature mode shape method to detect damage in plates [99]. Moreno-Garcıa [100] proposed a Ritz based method to improve the computation of mode shape derivatives.…”

Section: Modal Domain Methodsmentioning

confidence: 99%

The State-of-the-Art on Framework of Vibration-Based Structural Damage Identification for Decision Making

2017

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Abstract:Research on detecting structural damage at the earliest possible stage has been an interesting topic for decades. Among them, the vibration-based damage detection method as a global technique is especially pervasive. The present study reviewed the state-of-the-art on the framework of vibration-based damage identification in different levels including the prediction of the remaining useful life of structures and the decision making for proper actions. This framework consists of several major parts including the detection of damage occurrence using response-based methods, building reasonable structural models, selecting damage parameters and constructing objective functions with sensitivity analysis, adopting optimization techniques to solve the problem, predicting the remaining useful life of structures, and making decisions for the next actions. For each part, the commonly used methods were reviewed and the merits and drawbacks were summarized to give recommendations. This framework is aimed to guide the researchers and engineers to implement step by step the structure damage identification using vibration measurements. Finally, the future research work in this field is recommended.

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Section: Modal Domain Methodsmentioning

confidence: 99%

The State-of-the-Art on Framework of Vibration-Based Structural Damage Identification for Decision Making

2017

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“…The variations in the uniform load surface curvature were employed by Wu and Law to localize damage in plate structures . Moreno‐García et al studied the performance of high‐order mode shape derivatives in damage localization of 2D structures. They concluded that the fourth‐order derivative provides better results.…”

Section: Introductionmentioning

confidence: 99%

“…According to Moreno‐García et al and Rucevskis et al, damage localization is more effective when more degrees of freedom are measured. A large arrangement of triaxial accelerometers or a scanning laser vibrometer (SLV) are usual methods for full‐field vibration measurements.…”

Section: Introductionmentioning

confidence: 99%

Gapped Gaussian smoothing technique for debonding assessment with automatic thresholding

Meruane

Fernandez

Ruiz

et al. 2019

Struct Control Health Monit

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Sandwich structures are subjected to imperfect bonding or debonding caused by defects during the manufacturing process, by fatigue, or by impact loads.In this context, their safety and functionality can be improved with the implementation of vibration-based structural damage assessment methodologies.These methodologies involve the computation of second or higher order displacement derivatives, which are often obtained using the central difference method. Nevertheless, this method propagates and amplifies the measurement errors and noise. Therefore, a Gaussian process (GP) regression model to build smoothed (noise-free) curvature mode shapes from noisy experimental mode shape displacements is presented in this paper. The proposed baseline-free debonding assessment approach combines the gapped smoothing (GS) method, curvature mode shapes estimated using a GP regression, and the valleyemphasis method to automatically find damaged regions. Experimental results indicate that our approach performs better than the conventional GS method in the presence of experimental noise.

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“…There also are a wide variety of literature which investigate structural damage using different modal parameters of the structure. Moreno-Garcia et al [30], however, adopt a new technique based on Ritz method so as to estimate the computation error of mode shape derivatives of structures, by which the optimal spatial sampling can be defined to minimize the influence of the error. They compute first, second, third and fourth order derivatives using finite differences with a quadratic convergence of the spatial sampling, in order to localize damage in a laminated composite plate.…”

Section: Introductionmentioning

confidence: 99%

Modal Data Based Approach for Structural Damage Identification by Means of Imperialist Competitive Optimization Algorithm

2017

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In this paper, an effective method for structural damage detection is put forth in which an objective function based on the natural frequencies and modal shapes of the structure is established to identify and detect structural damage. The problem is defined and solved as an optimization problem employing Imperialist Competition Algorithm (ICA). Moreover, four numerical examples are examined each of which has different damage scenarios in order that the applicability of the method would be clearly proved. The results show the efficiency of the method in detecting single and multiple damages in different structures. Afterwards, the effects of measurement noises are included in some of the examples so that the method can be more consistent with real situations. Besides, a comparison among several evolutionary optimization algorithms in the research is made to enlighten the accuracy, robustness and reliability of the method. All of the results lead to the conclusion that the suggested method of the paper is of good accuracy, and, therefore, can be both used and trusted in solving damage detection problems, even in cases that measurement noises are encountered.

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A new technique to optimize the use of mode shape derivatives to localize damage in laminated composite plates

Cited by 44 publications

References 19 publications

The State-of-the-Art on Framework of Vibration-Based Structural Damage Identification for Decision Making

The State-of-the-Art on Framework of Vibration-Based Structural Damage Identification for Decision Making

Gapped Gaussian smoothing technique for debonding assessment with automatic thresholding

Modal Data Based Approach for Structural Damage Identification by Means of Imperialist Competitive Optimization Algorithm

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