Nondestructive damage detection in deteriorated girders using changes in nodal displacement

Ha, Tuan Minh; Fukada, Saiji

doi:10.1007/s13349-017-0231-x

Cited by 14 publications

(9 citation statements)

References 23 publications

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“…Ha and Fukada estimated the DBI and determined the damage locations by assessing the calculated deformation shapes of the girder under static load in its normal and deteriorated states (Ha and Fukada, 2017). The purpose of this study is to determine the effect of DBI when the displacement influence line obtained from the moving load is used.…”

Section: Proposed Diagnostic Methodsmentioning

confidence: 99%

“…The findings revealed that the displacement change curve can be a valuable indication, even capable of capturing the element's position with a slight decrease in stiffness. In 2017, Ha and Fukada presented the displacementbased index (DBI) as a tool for detecting structural degradation in prestressed concrete girders by utilizing nodal displacement variation (Ha and Fukada, 2017). DBI, on the other hand, was a static load-based method that makes no allowance for moving loads.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Utilization of the Influence Line of Displacement to Identify a Decline in the Stiffness of Beams

Ha¹,

Ma²,

Nguyen³

et al. 2022

J. tech. innov.

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The purpose of this work is to offer a method for detecting structural damage utilizing the standardized index of the beam’s deflection influence line difference as input data for the evaluation procedure. The displacement influence line used in the evaluation is calculated using the findings of the behavior analysis of the reinforced concrete beam’s finite element model when subjected to a moving load. SAP2000 software is used to simulate reinforced concrete beams. The mobile load is then assigned to move along the beam from its starting position to its ending position. For each mobile load example, the displacement at each survey node will be output to draw the influence line. The displacement analysis of the beams is compared before and after assuming damage for each mobile load instance in order to determine the location of the stiffness drop. From then, the findings of beam damage diagnosis are reviewed and evaluated, as well as the methods’ practicality in real implementations.

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Section: Proposed Diagnostic Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Utilization of the Influence Line of Displacement to Identify a Decline in the Stiffness of Beams

Ha¹,

Ma²,

Nguyen³

et al. 2022

J. tech. innov.

View full text Add to dashboard Cite

show abstract

“…The degree centrality means that the keyword "public-private partnership" appears in the selected articles with 147 other keywords. Public-private partnership has been recognized as a mechanism to build the resilience of critical infrastructure [17, [31][32][33][34]. The keyword "cybersecurity" was ranked 2 nd with a degree centrality of This means the keyword "cybersecurity" appeared with 139 other keywords.…”

Section: Vosviewer and Gephi Abstract Co-occurrencementioning

confidence: 99%

A scientometric review of public-private partnership in critical infrastructure resilience

Ampratwum

Osei‐Kyei

Tam

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Critical infrastructure resilience requires disintegrating traditional silos of stakeholders to form collaborative network such as a public-private partnership. Critical infrastructure resilience is mostly influenced by the relationship between public (government institutions/agencies) and private sector (private institutions/agencies). Public-private partnership is recognized as a medium to build the resilience of critical infrastructure. In this study, a scientometric review was conducted using VOSviewer and Gephi to identify the publication trend and gaps in the public-private partnership in critical infrastructure resilience research domain. A total of 87 publications were retrieved from a literature search on Scopus. It was identified that more studies have acknowledged the use of public-private partnership to build critical infrastructure resilience. However, majority of the public-private partnership in critical infrastructure resilience research papers were on cyber security. Some of the gaps identified included, limited studies on the responsibilities of the public sectors and private sectors in CIR, risks in using public-private partnership to build critical infrastructure resilience, the structure of PPP in CIR in different infrastructure sectors, and critical resilience strategies applicable to a public-private partnership in building critical infrastructure resilience. The outcome of this research will be beneficial to researchers where the gaps identified can be explored for further studies.

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“…Displacements can also be indirectly determined by the adequate treatment of measured strains and accelerations [25] and instrumentation of a passing vehicle [26]. In the case of beam structures, deflection analysis can be used for damage detection [19,[27][28][29][30][31][32], stress-state estimation [8,33], and serviceability assessment [34,35]. However, no study has comprehensively monitored the elastoplastic response of beam structures.…”

Section: Introductionmentioning

confidence: 99%

A Diagnostic Method Based on Deflection Analysis for Monitoring Post-elastic Response of Beams

Sciegaj

2023

Int J Civ Eng

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A non-destructive diagnostic method based on deflection analysis for monitoring the post-elastic response of beams was developed, and a diagnostic indicator was proposed. The indicator was defined as the second moment of the normalised curvature function about the mid-span, where the curvature was computed from the normalised deflection function. Elastic reference values of the indicator were computed for simply supported beams under uniformly distributed load, three-point, and four-point bending. Development of the indicator under progressive loading was examined with the help of finite element analyses. The indicator value monotonically decreased with increasing deformation provided that maximum bending moment was located between 0.41L and 0.59L, where L is the span of the beam. In this interval, the value of the indicator was unique and enabled the direct monitoring of the post-elastic stress level in the cross-section. The method was validated with the help of available experiments on simply supported beams. For beams working in the elastic range, a mean error of $${2.1}{\%}$$ 2.1 % was obtained between the measured and theoretical indicator values. For quasi-brittle material in the post-elastic stage, the decreasing value of the indicator signified the development of damage in accordance with experimental results.

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Nondestructive damage detection in deteriorated girders using changes in nodal displacement

Cited by 14 publications

References 23 publications

Utilization of the Influence Line of Displacement to Identify a Decline in the Stiffness of Beams

Utilization of the Influence Line of Displacement to Identify a Decline in the Stiffness of Beams

A scientometric review of public-private partnership in critical infrastructure resilience

A Diagnostic Method Based on Deflection Analysis for Monitoring Post-elastic Response of Beams

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