A frequency‐domain approach for damage detection in welded structures

Ronchei, Camilla; Vantadori, Sabrina; Carpinteri, Andrea; Iturrioz, Ignácio; Rodrigues, Roberto Issopo; Scorza, Daniela; Zanichelli, Andrea

doi:10.1111/ffe.13419

Cited by 7 publications

(3 citation statements)

References 55 publications

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“…The employment of modern, high-tech computers and sensors has increased the popularity of signal-based methodologies in structural health monitoring [2]. There are many different signal-based techniques, some of which include the time domain [3,4], the frequency domain [5,6], and the time-frequency domain [7,8]. These methodologies are used in order to examine the dynamic properties of structures [9].…”

Section: Introductionmentioning

confidence: 99%

Life-Cycle Cost Assessment Using the Power Spectral Density Function in a Coastal Concrete Bridge

Hadizadeh-Bazaz

Navarro

2023

JMSE

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Recently, the repair and maintenance of structures has been necessary to prevent these structures’ sudden collapse and to prevent human and financial damage. A natural factor in marine environments that destroys structures and reduces their life is the presence of chloride ions. So regular health monitoring of concrete coastal buildings for on-time repair is essential. This study investigates the performance of the power spectral density (PSD) method as a non-destructive damage-detection method to monitor the location and amount of damage caused by chloride ions during a structure’s life using different approaches according to life-cycle assessment (LCA) and life-cycle cost assessment (LCCA). In this regard, chloride corrosion damage dependent on zone distance from seawater was first calculated to obtain the service life of each part of a coastal concrete bridge according to the conventional method. Based on rebar corrosion each year, the next stage forecasted the bridge’s concrete deterioration. The PSD method monitored the annual loss of reinforcement cross-sectional area, changes in dynamic characteristics such as stiffness and mass, and the bridge structure’s life using sensitivity equations and the linear-least-squares algorithm. Finally, according to the location and quality of damage in each year of bridge life until the end of life, LCC and maintenance and repair costs of the PSD method were compared with the conventional method. The results showed that this strategy was very effective at lowering and optimizing the costs of maintenance and repair caused by chloride corrosion.

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Section: Introductionmentioning

confidence: 99%

Life-Cycle Cost Assessment Using the Power Spectral Density Function in a Coastal Concrete Bridge

Hadizadeh-Bazaz

Navarro

2023

JMSE

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“…In the present paper, two multiaxial criteria, proposed by some of the present authors in the recent past, are considered: one is formulated in time-domain [23][24][25][26], based on the critical plane approach and derived for stationary ergodic Gaussian process, whereas the other is the reformulation of the above one in frequencydomain [23,[26][27][28][29].…”

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confidence: 99%

An efficient time-domain fatigue analysis and its comparison to spectral fatigue assessment for construction steel 10HNAP

Ronchei

Vantadori²,

Marciniak³

et al. 2022

International Journal of Fatigue

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“…Ronchei et al 12 applied and extended an existing criterion developed for random multiaxial fatigue loading in the frequency domain to weldments. The reference (critical plane) stress histories and their PSDs have to be found at the hotspot using structural stress values extrapolated to the weld toe.…”

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confidence: 99%

Virtual special issue: Variable amplitude loading—Fracture mechanics and cumulative damage modeling

Heuler

Savaidis

Newman

2022

Fatigue Fract Eng Mat Struct

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Almost all structures in service are exposed to loads with variable amplitudes, often termed as spectrum loading; many in-service failures occur because this type of loading is not considered properly. In spite of this fact, only a minority of all publications in the fatigue domain are related to variable amplitude loading, and the majority concentrate on constant amplitude loading. Especially for applications in different industrial sectors such as automotive, railway, aircraft, maritime, plant and civil engineering, and renewable energies, various facets of spectrum loading have to be considered in design, and a solid background should be provided for reliable and economic design and safe operation of structures.A series of conferences on Material and Component Performance under Variable Amplitude Loading (VAL) has been initiated on this specific topic starting in 2002 in Tours, France, followed in 2009 in Darmstadt, Germany, and then in 2015 in Prague, Czech Republic, bringing together worldwide experts from science and industry. The fourth of this series (VAL4) was originally scheduled to take place in Darmstadt, Germany, from 30 March to April 1, 2020, in order to address the following topics: load assumptions, modeling of fatigue damage and crack growth, design and analysis methods and tools, reliability concepts, advanced materials and manufacturing, testing, effects on lifetime, numerical assessment, and verification. However, VAL4 unfortunately had to be cancelled at short notice because of Covid-19.In this FFEMS Virtual Special Issue "Variable Amplitude Loading-Fracture Mechanics and Cumulative Damage Modeling," a selected set of extended papers of contributions to VAL4 is presented (available at https:// onlinelibrary.wiley.com/doi/toc/10.1111/(ISSN)1460-2695. Variable-Amplitude-Loading). Another set of the contributions has been published in parallel in the Virtual Special Issue "Variable Amplitude Loading-Load Assumptions and Structural Durability" of the International Journal of Fatigue.The present FFEMS Virtual Special Issue focuses on fracture mechanics and cumulative damage modeling, damage detection, and inspection intervals using frequency domain concepts, elastic-plastic deformation, and thermal load effects.

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A frequency‐domain approach for damage detection in welded structures

Cited by 7 publications

References 55 publications

Life-Cycle Cost Assessment Using the Power Spectral Density Function in a Coastal Concrete Bridge

Life-Cycle Cost Assessment Using the Power Spectral Density Function in a Coastal Concrete Bridge

An efficient time-domain fatigue analysis and its comparison to spectral fatigue assessment for construction steel 10HNAP

Virtual special issue: Variable amplitude loading—Fracture mechanics and cumulative damage modeling

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