Damage identification in plates based on the ratio of modal strain energy change and sensitivity analysis

Wei, Zitian; Liu, J.K.; Lu, Zhong-Rong

doi:10.1080/17415977.2015.1017489

Cited by 20 publications

(6 citation statements)

References 33 publications

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“…The damage index in [86] was the same as that in [85]. Although the damage indices derived from modal strain energy are similar in many studies, different techniques are utilized in the second stage, e.g., Jaya algorithm [87], finite element (FE) model updating [88], genetic algorithm [89,90], differential evolution algorithm [91], etc. Apart from beam and truss, these two-stage methods have been applied to thin plates [87,88] and composite plates [90,91].…”

Section: Reviewmentioning

confidence: 99%

“…Although the damage indices derived from modal strain energy are similar in many studies, different techniques are utilized in the second stage, e.g., Jaya algorithm [87], finite element (FE) model updating [88], genetic algorithm [89,90], differential evolution algorithm [91], etc. Apart from beam and truss, these two-stage methods have been applied to thin plates [87,88] and composite plates [90,91]. However, although the dimension of search space in the second stage is substantially reduced by approximately localizing the damage, an obvious disadvantage is that if the true damage location is not correctly identified in the first stage, there is no remedial measure in the second stage and the damage would remain unidentified throughout.…”

Section: Reviewmentioning

confidence: 99%

See 1 more Smart Citation

A Review on Vibration-Based Damage Detection Methods for Civil Structures

Sun,

Ilanko,

Mochida

et al. 2023

Vibration

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Vibration-based damage detection is a range of methods that utilizes the dynamic response of a structure to evaluate its condition and detect damage. It is an important approach for structural health monitoring and has drawn much attention from researchers. While multiple reviews have been published focusing on different aspects of this field, there has not been a study specifically examining the recent development across the range of methods, including natural frequency, mode shape, modal curvature, modal strain energy, and modal flexibility-based damage detection methods. This paper aims to fill this gap by reviewing the recent application of these methods in civil structures, including beams, plates, trusses, frames, and composite structural members. The merits and limitations of each method are discussed, and research opportunities are presented. This broader review also provides an opportunity for critical comparison across this range of methods. While predominantly reviewing experiment-based studies, this review also considers some numerical studies that may motivate further research.

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Section: Reviewmentioning

confidence: 99%

Section: Reviewmentioning

confidence: 99%

A Review on Vibration-Based Damage Detection Methods for Civil Structures

Sun,

Ilanko,

Mochida

et al. 2023

Vibration

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“…Fu et al [19] applied the modal strain energy change ratio (MSECR) for identifying damage locations in plate structures and proposed a method to mitigate the nearby effect, reducing mislocalization. Wei et al [20] optimized the damage-degree diagnosis using finite element models and the strain energy method based on the response's sensitivity. Although MSE is highly practical, calculating a structure's modal strain energy requires computing the element stiffness matrix, which can impose a significant computational burden.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Damage Localization in GFRP Composite Plates: A Novel Approach Using Feedback Optimization and Multi-Label Classification

Cao,

Liao,

Yan

et al. 2024

Processes

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Damage localization in GFRP (glass-fiber-reinforced polymer) composite plates is a crucial research area in marine engineering. This study introduces a feedback-based damage index (DI) combined with multi-label classification to enhance the accuracy of damage localization and address scenarios involving multiple damages. The research begins with the creation of a modal database for yachts’ GFRP composite plates using finite element modeling (FEM). A method for deriving a feedback-weighted matrix, based on the accuracy of the DI, is then developed. Sensitivity analysis reveals that the feedback DI is 50% more sensitive than the traditional DI, reducing false positives and missed detections. The associated feedback-weighted matrix depends solely on the structural shape, ensuring its transferability. To address the challenge for localizing multiple damages, a multi-label classification approach is proposed. The synergy between the feedback optimization and multi-label classification enables the rapid and precise localization of multiple damages in GFRP composite plates. Modal testing on damaged GFRP plates confirms the enhanced accuracy for combining the feedback DI with multi-label classification for pinpointing damage locations. Compared with traditional methods, this feedback DI method improves sensitivity, while multi-label classification effectively handles multiple damage scenarios, enhancing the overall efficiency of the damage diagnosis. The effectiveness of the proposed methods is validated through experimentation, offering robust theoretical support for composite plate damage diagnostics.

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“…Some of them need complete modal data [31][32][33][34][35][36] and some others can perform with incomplete modal data. [37][38][39][40] One of these methods is Inverse Vibration Method (IVM) which is based on inverse vibration problem. The word ''invers,'' refers to the extraction of inherent features of a dynamic system, like stiffness or mass matrix, using data describing the behavior of that, like mode shapes and natural frequencies.…”

Section: Introductionmentioning

confidence: 99%

A stiffness-based method for damage detection in 3-D offshore jacket platforms using inverse vibration problem (IVP) technique

Tabeshpour

Abbaspour

Ahmadi

2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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More attention has been paid to Damage detection in offshore jacket platforms (OJP) because of repair and maintenance issues. Damage detection using modal data from a few sensors is one of the main important subjects that researchers have paid attention to it. The inverse Vibration Problem (IVP) technique does not need modal data in all nodes of OJP but first modal data in different levels of platform and principal degrees of freedom could be sufficient. Since the complex structural model becomes a reduced shear building by implementing this technique, there must be a reduced equivalent stiffness matrix for the healthy structure to make the comparison for damage detection. This paper deals with the formulation and implementation of IVP technique in corporation of the proper method for calculation of equivalent level stiffness. The proper method was selected based on a comparison of modal data obtained from full and reduced models using comparison tools like the MAC coefficient. Also, damage detection in a typical OJP model under a specific damage scenario was investigated numerically and experimentally and the results show the reliable performance of the methodology. A damage detection flowchart is suggested to detect damage location properly. It is developed mainly based on geometrical couplings in OJP structure in damaged conditions and the method leads to damage location exactly and maximum error in damage prediction is obtained at about 12%.

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Damage identification in plates based on the ratio of modal strain energy change and sensitivity analysis

Cited by 20 publications

References 33 publications

A Review on Vibration-Based Damage Detection Methods for Civil Structures

A Review on Vibration-Based Damage Detection Methods for Civil Structures

Enhancing Damage Localization in GFRP Composite Plates: A Novel Approach Using Feedback Optimization and Multi-Label Classification

A stiffness-based method for damage detection in 3-D offshore jacket platforms using inverse vibration problem (IVP) technique

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