Low frequency ultrasonic guided waves excitated by Galfenol Rod Ultrasonic Transducer in plate inspection

Wang, Xiaoyu; Gao, Sijia; Liu, Hailong; Li, Jian

doi:10.1016/j.sna.2020.112196

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…On the other hand, using the same method was merely applied in plate inspection using experimental and finite element simulation. The group successfully developed the defect detection method with an experimental error of above 10 % [23].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of plant integrity inspection on the API 5L X65 material under humid conditions: emerging fitness for service assessment approach

Aribowo,

Soedarsono,

Sicilia

et al. 2024

EEJET

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This work reports the development and corresponding monitoring of pipeline integrity inspection in the arid zone, which typically experiences external corrosion. The recent method poses the challenge which indaquate to synchronize the internal and external corrosion monitoring of API 5L X65 material trunklines and flowlines owing to imperfect types of inspection on the external progressive damage only. Red-clay soil, soil porosity, oxygen content, and moisture become critical parameters for controlling the corrosion of the above conditions. The combination of ultrasonic guided wave test, visual inspection, and design life calculation is implemented to address the above challenges. Based on the results, trunkline B (12-inch) is more severe than A (18-inch), with the shorter measured remaining thickness and remaining life of 4.35 mm and 1.9 years. External corrosion and visual inspection results show that sand threatens corrosion. The external corrosion product is evident at the 3 and 6 o’clock positions, corresponding to the exposure of the buried pipelines to moisture. The maximum metal loss in the trunk is 14.5 %, which confirms the environment of trunkline B. The internal corrosion has little effect on the integrity of the plant. Despite the three fluid phases inside the flowlines and trunklines, the measured corrosion rate on the coupon is relatively lower. The highest recorded corrosion rate is 0.443 mmpy, while the contribution to internal corrosion from the rest of the monitor well is insufficient. This research is designed to model the strategy to utilize instrumentation of Ultrasonic tests and human intervention in corrosion mitigation

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of plant integrity inspection on the API 5L X65 material under humid conditions: emerging fitness for service assessment approach

Aribowo,

Soedarsono,

Sicilia

et al. 2024

EEJET

View full text Add to dashboard Cite

show abstract

“…It can be seen that in the f-k domain, since the propagation characteristics of the wave are related to the frequency component and speed of the wave, 2D-FFT is carried out on the acquired time-domain signals at different propagation distances to obtain mutually separated modes in the f-k domain [28]. However, in practical application, a single mode wave containing only a certain mode is often needed [29], so mode-separation technology emerges. Studies have shown that the ridge extraction method in time-frequency analysis can be used in the process of mode separation and achieve good results [30].…”

Section: Introductionmentioning

confidence: 99%

Multi-Order Mode Excitation and Separation of Ultrasonic Guided Waves in Rod Structures Using 2D-FFT

Li,

Zhang,

Cheng

et al. 2023

Sensors

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The ultrasonic guided wave technique is extensively used for nondestructive structural testing, and one of the key steps is to extract a single mode with certain purity from multi-order mixed modes. In this paper, the propagation of ultrasonic guided waves in the cylindrical rod is simulated first; the appropriate broadband excitation signal is selected to excite the multi-order modes in a specific frequency range; and the time–space signal containing multi-order modes is converted to the frequency-wavenumber domain signal by two-dimensional Fourier transform. In the frequency-wavenumber domain, the frequency-wavenumber ridge is extracted from the multi-mode frequency-wavenumber domain based on the dynamic programming method, and then the time-domain signal corresponding to a single mode can be reconstructed. By comparing the excited multi-order mode and the separated single mode with the theoretical results, it is observed that the two results are consistent. Thus, the employed mode-excitation method can accurately excite the multi-order modes in rod structures. Furthermore, the proposed method enables the separation of a single-mode wave with high purity, providing a foundation for future utilization of isolated modes.

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Characterization of Tensile and Fatigue Damages in Composite Structures Using Lamb Wave for Improved Structural Health Monitoring

Driss¹,

Mahi²,

Bentahar³

et al. 2023

Int. J. Appl. Mechanics

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The majority of ultrasonic characterizations are done on thermoplastics, with just a few articles available on the characterization of thermoset resin characteristics. A non-destructive methodology for monitoring fatigue and static deformation induced by mechanical loading on a fiber-reinforced plastic is presented. However, these materials’ dynamics of elastic waves are considerably more complicated. A large part was devoted to the calculation of dispersion curves of guided waves in composites. Therefore, this study presents a thorough description of the Glass/Epoxy system by comparing ultrasonic and mechanical data. Ultrasonic wave propagation at high frequencies, functioning as a dynamic mechanical deformation, may be utilized to calculate longitudinal and shear moduli during static and dynamic loading. The evolution of attenuation and velocity during loading is linked to the significant changes that occur during the aging process. The experimental transfer function is determined by the Fourier transform of all the obtained ultrasonic echoes.

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Low frequency ultrasonic guided waves excitated by Galfenol Rod Ultrasonic Transducer in plate inspection

Cited by 3 publications

References 14 publications

Development of plant integrity inspection on the API 5L X65 material under humid conditions: emerging fitness for service assessment approach

Development of plant integrity inspection on the API 5L X65 material under humid conditions: emerging fitness for service assessment approach

Multi-Order Mode Excitation and Separation of Ultrasonic Guided Waves in Rod Structures Using 2D-FFT

Characterization of Tensile and Fatigue Damages in Composite Structures Using Lamb Wave for Improved Structural Health Monitoring

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