Influence of sampling interval on deflection-influence-line-based damage detection in beams

Grandić, Ivana Štimac

doi:10.5937/jaes12-5668

Cited by 2 publications

(3 citation statements)

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“…In this section, the comparison of the method of curvature of DIL [23][24][25][26] and the presented method is made. The principle of the method of curvature of DIL is that damage will cause an increase in the curvature of DIL, and this feature can be utilized for damage locating.…”

Section: Comparison Of Different Methodsmentioning

confidence: 99%

“…deflection) are usually directly utilized to establish damage indicators, and analysis of vehicle-bridge coupling vibration or FE model updating is not required. Few other authors [23][24][25][26] presented a method of curvature of displacement influence line (DIL) to detect damage, and the damage index without considering velocity effect is more effective than that considering velocity effect. In addition, damage indicator based on curvature of quasi-static component of dynamic passing vehicle displacement was presented in Sun et al 27,28 Among these model-free methods, static response should be first extracted from dynamic response in order to obtain the damage index.…”

Section: Introductionmentioning

confidence: 99%

“…It requires no complicated analysis of vehicle-bridge coupling vibration, and it only necessitates the area of displacement time history when vehicle loads pass by. Compared to model-free methods in the literature, [23][24][25][26][27][28] the process of extraction of static component from dynamic displacement is not required in this article. Both damage detection and damage localization strategies have been presented.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel method for structural diagnosis based on passing vehicle response

Hong

Zhang

et al. 2017

Advances in Mechanical Engineering

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An output-only method for structural diagnosis based on passing vehicle response is proposed in this article. Theoretical derivation reveals that the area of displacement response from only one sensor when vehicle loads pass over a bridge is in relation to global bending stiffness. Therefore, it can be preliminarily ascertained whether damage occurs in structure by comparison of the area of displacement responses before and after damage. Then, in order to localize damage, a damage index composed of displacement responses from several sensors is presented. The damage index has corresponding relationship with local bending stiffness and it is irrelevant to vehicle load parameters. Meanwhile, the method is suitable for both dynamic moving load and static vehicular load test. Case study of a box-girder bridge and experimental data verify the accuracy of the method, and different kinds of vehicle loads at different speeds basically have no influence on the method. In addition, the comparison between the method of curvature of displacement influence line and the presented method is also made, and the results show that the presented damage index is free from the effect of vehicle speeds while the damage index of curvature of displacement influence line is susceptible to vehicle speed.

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Section: Comparison Of Different Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A novel method for structural diagnosis based on passing vehicle response

Hong

Zhang

et al. 2017

Advances in Mechanical Engineering

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Estimating damage probability of the prestressed simple beam through eigenfrequency measurement

Latinović-Krndija,

Broćeta,

Cumbo

et al. 2024

J Appl Eng Science

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The paper proposes a method for modal-based damage assessment in structures where historical data on their modal properties is often missing. This method is based on the measurements of the structure's eigenfrequencies and predefined assumed damage states. Damage is defined at the level of confirming damage existence with a rough estimate of its extent, within the limits of the predefined assumptions. The factors that affect the outcomes of experimental modal analysis of damaged reinforced and prestressed beam elements on structures in use are briefly outlined and the challenges encountered during these analyses and potential solutions are briefly discussed. The method's application is demonstrated on a damaged prestressed concrete simple beam. Bayesian formulation for probability estimation is used to calculate the probability that a beam, characterized by a specific measured natural frequency, is either undamaged or has a certain level of damage. This calculation is based on the results from finite element models created in the Abaqus software suite. In the finite element models, an eigenfrequency distribution, based on the modulus of elasticity distribution, of a prestressed beam is obtained, for different levels of the assumed prestressing force drop and the corresponding damages caused by the force drop. In the presented problem, the modulus of elasticity of concrete is incorporated into the analysis as an uncertain parameter with a normal distribution. Similarly, other uncertain parameters of the actual structure can be modelled.

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Influence of sampling interval on deflection-influence-line-based damage detection in beams

Cited by 2 publications

References 0 publications

A novel method for structural diagnosis based on passing vehicle response

A novel method for structural diagnosis based on passing vehicle response

Estimating damage probability of the prestressed simple beam through eigenfrequency measurement

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