The Effect of Corrosion on the Natural Frequencies of Beams

Stanciu, Steliana; Simoiu, Dorin; Crastiu, Ion; Deac, Sorin; Oanţă, Eduard Nicuşor; Bereteu, Liviu

doi:10.1051/itmconf/20192902013

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…The numerical analysis showed that the most sensitive modes in changing frequencies with the depth of corrosion were bending modes. Also, the first bending mode was more sensitive depending on the corroded depth than the first torsion mode (6.9% versus 2.23%) [59].…”

Section: Research Review and Results Analysismentioning

confidence: 93%

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Damage Assessment of Reinforced Concrete Elements Due to Corrosion Effect Using Dynamic Parameters: A Review

et al. 2021

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Corrosion of reinforcement is one of the main problems related to the durability of reinforced concrete structures. This can cause cracks and a separation of the protective layer, as well as reducing strength and structural stiffness, which can result in numerous human casualties. Visual inspection is a standard method of assessing the condition of reinforced concrete structures whose limitations, such as time, interpretability, accessibility, etc., may affect its effectiveness. Therefore, damage determination methods based on dynamic parameters are becoming more and more prominent in the assessment of damage to reinforced concrete structures. The aim of this paper is to review the literature regarding the determination of corrosion of reinforcement by methods based on dynamic parameters, and to identify future research to develop a method that would detect corrosion problems in time through a continuous system of structural health monitoring.

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Section: Research Review and Results Analysismentioning

confidence: 93%

“…Changing the natural frequency [10,[50][51][52][53][54][55][56][57][58][59][60] Change in damping coefficient [51][52][53]55,56] Changing modal shapes [52] By applying deviation of basic dynamic parameters…”

Section: By Applying Basic Dynamic Parametersmentioning

confidence: 99%

Damage Assessment of Reinforced Concrete Elements Due to Corrosion Effect Using Dynamic Parameters: A Review

et al. 2021

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“…This equation is only valid for bending modes and most accurate for slender beams and low order modes. 35,37 The parameter k n depends on the mode number n and is found as the solution of the transcendental Equation (2). The displacement mode shapes which belong to the natural frequencies of the first three bending modes of a beam with free-free boundary conditions are illustrated in Figure 2.…”

Section: Effects Of Corrosion On Modal Characteristicsmentioning

confidence: 99%

Challenges in assessing corrosion damage in reinforced concrete beams by vibration-based monitoring: literature analysis and experimental study

Vandecruys

Vereecken

Anastasopoulos

et al. 2023

Structural Health Monitoring

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Corrosion is one of the most frequently occurring problems in reinforced concrete (RC) structures. The formation of rust products results in deterioration processes that decrease the durability and structural capacity. Therefore, frequent inspection and monitoring of corrosion damage play a vital role in establishing reliable asset management of civil structures. Vibration-based monitoring (VBM) is particularly useful in studying the global response of a deteriorated structure, since a change in modal characteristics may indicate damage. Although VBM has already been studied thoroughly, a systematic understanding of how corrosion contributes to the changes in modal characteristics is still lacking. In this study, an overview and assessment of the existing literature for dynamic tests on corroded RC beams is provided, aiming to give a critical review of the current knowledge, possibilities and challenges related to this topic. Moreover, this study presents additional data from two test programmes, which enable to point out the challenges in VBM of corroding RC beams. The experimental test programmes include two locally corroded beams and three uniformly corroded beams, as well as non-corroding reference beams. For high corrosion levels, the natural frequencies of beams reported in the literature, as well as the beams of the test programmes, decreased. However, comparison with a non-corroding reference beam proved to be essential to eliminate the influence of other non-negligible factors such as creep and shrinkage. Other modal characteristics, such as the damping ratio and mode shapes, are found to be less sensitive to monitor uniform or local corrosion in RC beams.

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“…It was discovered that the hostile impacts of the atmosphere on steel bridges would continue in the next years. This information can be used to create an acceptable corrosion model for carbon steel [19].…”

Section: Literature Reviewmentioning

confidence: 99%

A Review on Analysis of Damage Diagnosis and the Vibration Characteristics of Steel Bridge Structures

kour

Tangri

Tiwary

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Cracks or crevasses in girder steel bridges caused by moist environmental issues such as corrosion have the possibility of causing structural destruction, resulting in the loss of unanticipated events, assets, and human life. This obliteration can be overlooked if cracks are resolved early. The cracks in the bridge girder alter its strength and vibration characteristics. The current study examines various studies in the field of crack detection/damage detection that have been conducted using various numerical and experimental techniques. Analysis of finite elements (FEA) can be highly useful in protecting a structure from damage and cracks. The review deals with the investigation of damage commencing from environmental exposure conditions which can be studied via various numerical and experimental investigations by means of simulation techniques. By dint of these software-aided techniques, the research can be carried out in a simple and effortless manner. FEA enables engineers to conduct the simulation of a designed model rather than creating a physical model for testing. The current study looks at the effect of damage initiation and propagation using software-operated techniques The Applications of finite element methodology, which requires a software package for dynamic simulations, are presented and highlighted in terms of innovation and future research in studying crack attributes of natural and mode shapes.

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The Effect of Corrosion on the Natural Frequencies of Beams

Cited by 4 publications

References 3 publications

Damage Assessment of Reinforced Concrete Elements Due to Corrosion Effect Using Dynamic Parameters: A Review

Damage Assessment of Reinforced Concrete Elements Due to Corrosion Effect Using Dynamic Parameters: A Review

Challenges in assessing corrosion damage in reinforced concrete beams by vibration-based monitoring: literature analysis and experimental study

A Review on Analysis of Damage Diagnosis and the Vibration Characteristics of Steel Bridge Structures

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