Experimental and numerical identification of corrosion degradation of ageing structural components

Zima, Beata; Woloszyk, Krzysztof; Garbatov, Y.

doi:10.1016/j.oceaneng.2022.111739

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…This study aims to perform numerical and experimental feasibility analyses to evaluate the use of guided ultrasonic waves in estimating the degradation level of corroded stiffened panels as a part of ship hulls. Contrary to our previous studies [15,16], where only distances of approximately 300 mm were investigated, this proves the possibility of using the guided waves on longer distances (up to 1250 mm), which is crucial for increasing the effectiveness and reducing the total cost of the state assessment. Previous work was devoted to analysing the possibility of monitoring plate corrosion degradation.…”

Section: Introductioncontrasting

confidence: 63%

Guided Waves in Ship Structural Health Monitoring – A Feasibility Study

Roch,

Zima,

Woloszyk

et al. 2023

Polish Maritime Research

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Ships and offshore structures operate in a severe corrosion degradation environment and face difficulty in providing long-lasting corrosion protection. The Classification Societies recommend regular thickness measurements leading to structural component replacements, to ensure structural integrity during service life. The measurements are usually performed using ultrasonic thickness gauges and such an approach requires multiple measurements of the corroded structural components. Otherwise, the collected data are insufficient to precisely assess the corrosion degradation level. This study aims to perform numerical and experimental analyses to verify the use of guided ultrasonic waves in defining the corrosion degradation level of the corroded structural components of a ship. The study incorporates the fundamental antisymmetric Lamb mode, excited by piezoelectric transducers attached at the pre-selected points on stiffened panels, representing typical structural ship components. The specimens are exposed to accelerated marine corrosion degradation, the influence of the degree of degradation on the wave time of flight being analysed. The study indicates that guided waves are a promising approach for diagnosing corroded structural components. The signals characterised by a high signal-to-noise ratio have been captured, even for relatively long distances between the transducers. This proves that the proposed approach can be suitable for monitoring more extensive areas of ship structures by employing a single measurement.

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Section: Introductioncontrasting

confidence: 63%

Guided Waves in Ship Structural Health Monitoring – A Feasibility Study

Roch,

Zima,

Woloszyk

et al. 2023

Polish Maritime Research

Self Cite

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“…Ultrasonic waves can be classified into guided, surface, and bulk waves. In the case of guided waves, PZT sensors are typically attached to the surface of the observed element using adhesive techniques (Zima et al, 2022). On the other hand, for bulk waves, sensors are embedded within the monitored element (Yang et al, 2022).…”

Section: Ultrasonic Wave Propagation In Concrete Structures Using Sasmentioning

confidence: 99%

Attenuation characteristics of concrete using smart aggregate transducers: Experiments and numerical simulations of P-wave propagation

Sun,

Fan,

Liu

2024

Journal of Intelligent Material Systems and Structures

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Concrete is a highly heterogeneous construction material. Waves that propagate through concrete face significant reflection, scattering, and attenuation issues. Understanding the behavior of waves as they propagate through concrete and arrive at a sensor has generated much attention, especially for developing real-world field applications. In this study, a predictive model of attenuated P-wave propagation using Rayleigh damping is presented. The method used frequency excitations ranging from 20 to 200 kHz and smart aggregates (SAs) were embedded in a concrete specimen to excite and receive P-waves. Moreover, 10 distances were marked opposite the exciter at two propagation paths. In the simulations and experiments, signal processing methods were utilized to extract the first arrival packet for calculating amplitude attenuation. The P-wave damping coefficient was modeled using the multi-physical finite element method, and the results of the predictive model were compared with the experimental results. A discussion on the utilization of frequency-dependent attenuation coefficients was conducted to explore potential P-wave attenuation factors and their respective contributions to the overall attenuation. Numerical studies have demonstrated a strong correlation with the experiments when an appropriate level of material damping coefficient was considered. By enhancing the overall comprehension of the P-wave damping coefficient and attenuation characteristics within concrete, damage detection techniques based on P-waves can be improved.

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“…A two-signal analysis method using a hybrid zero-crossing technique implemented together with a spectrum decomposition technique was proposed to estimate the phase velocity dispersion of Lamb waves [22]. This proposed technique is already used by other authors to detect corrosion degradation of ageing structural components [23] and for corrosion degradation monitoring of ship-stiffened plates [11]. However, using such a hybrid technique, when the received signals are filtered, it is impossible to determine the main parameters and regularities required for the estimation of the phase velocity in a strongly dispersive medium.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Lamb Wave Anti-Symmetric Mode Phase Velocity in Various Dispersion Ranges Using Only Two Signals

Draudvilienė

Raišutis

2023

Symmetry

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The application of non-stationary Lamb wave signals is a promising tool in various industrial applications where information about changes inside a structure is required. Phase velocity is one of the Lamb wave parameters that can be used for inhomogeneities detection. The possibility of reconstructing the segment of the phase velocity in a strong dispersion range using only two signals is proposed. The theoretical study is performed using signals of the A0 mode propagating in an aluminium plate at a frequency of 150 kHz, 300 kHz, 500 kHz and 900 kHz. The experiment was carried out at a value of 300 kHz. The studies conducted indicated that the maximum distance between two signals, at which the time-of-flight can be measured between the same phase points, is the main parameter for the two signals technique application. Theoretical and experimental studies were performed, and the mean relative error was calculated by comparing the obtained results with those calculated via the SAFE method. In the theoretical study, the mean relative error of 0.33% was obtained at 150 kHz, 0.22% at 300 kHz, 0.23% at 500 kHz and 0.11% at 900 kHz. The calculated mean relative errors δcph=0.91% and δcph=1.36% were obtained at different distances in the experimental study. The results obtained show that the estimation of the phase velocity in dispersion ranges using only two received signals was a useful tool that saved time and effort.

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Experimental and numerical identification of corrosion degradation of ageing structural components

Cited by 8 publications

References 29 publications

Guided Waves in Ship Structural Health Monitoring – A Feasibility Study

Guided Waves in Ship Structural Health Monitoring – A Feasibility Study

Attenuation characteristics of concrete using smart aggregate transducers: Experiments and numerical simulations of P-wave propagation

Estimation of Lamb Wave Anti-Symmetric Mode Phase Velocity in Various Dispersion Ranges Using Only Two Signals

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