Damage detection and quantification using transmissibility

Maia, N. M. M.; Almeida, Raquel; Urgueira, A. P. V.; Sampaio, R. P. C.

doi:10.1016/j.ymssp.2011.04.002

Cited by 125 publications

(97 citation statements)

References 6 publications

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“…The transmissibility that is calculated from the FRFs of a system is a transformation matrix between two sets of output responses in the frequency domain. The motivation of using transmissibility for damage detection relies on the fact that the transmissibility is a local quantity, suggesting a higher sensitivity than the modal parameters to detect structure changes [71]. For example, Worden et al [72] detected damage using the novelty detection algorithm based on the measured transmissibility.…”

Section: Frequency Domain Methodsmentioning

confidence: 99%

“…Meanwhile, the transmissibility functions employ only the measurement of the structural responses and do not require knowledge of the excitation input. This operational advantage is coupled with remarkable damage sensitivity as proven in the work by [71,72,78,159]. Sampaio et al [160] published a comparative study of using the FRF curvature, transmissibility, and the strain energy obtained directly from FRFs as damage indicators.…”

Section: Objective Features and Functionsmentioning

confidence: 99%

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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: Frequency Domain Methodsmentioning

confidence: 99%

Section: Objective Features and Functionsmentioning

confidence: 99%

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

2017

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“…The Transmissibility Damage Indicator (TDI) is presented in [25]. It compares a set of direct transmissibilities along the structure, undamaged ( ) rs  and damaged () d rs  at each frequency (ω).…”

Section: Damage Detection and Quantification Using Transmissibilitiesmentioning

confidence: 99%

“…One can also take here various measurements, vary the position j of the applied force (M positions) and sum up the results leading to the MRVAC (Multiple Response Vector Assurance Criterion) [25]: …”

Section: Damage Detection and Quantification Using Transmissibilitiesmentioning

confidence: 99%

A Comparison of Some Methods for Structural Damage Detection

2017

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In principal, a proper analysis of the dynamic response of a structure can provide general indicators of its operational conditions. When the dynamic response changes due to a variation of the physical properties of a structure, then one may conclude that some kind of damages has occurred. This paper presents investigation of the robustness and comparison of four simple methodologies to both identify and quantify the damages in structures, based on the use of Frequency Response Functions (FRF) signals, Principal Component Analysis technique (PCA) and Transmissibility. A steel beam with constant rectangular crosssection is used to compare the proposed approaches. At first, nine damaged scenarios are created and for each of them numerical examples are discussed; a database of FRFs is measured using modal testing. Then, PCA theory is applied to the FRF matrix and global damage detection and quantification indices are defined by using the first 3 Principal Components; Hotelling's T-squared distribution is also applied and by using transmissibility two other indicators, Transmissibility Damage Indicator and Weighted Damage Indicator, are computed for the assessment of damage. The reported examples show that all proposed methods are able to detect and quantify damages at the initial stage.

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“…Among all output-based methodologies, transmissibility, a concept raised decades ago, has become increasingly shared in scientific communities for its own merit depending on output only. Moreover, especially from the end of the 20 th century, booming research on transmissibility has been intensively developed [6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%