High-frequency guided ultrasonic waves to monitor corrosion thickness loss

Fromme, Paul; Bernhard, Fabian; Masserey, Bernard

doi:10.1063/1.4974574

Cited by 7 publications

(6 citation statements)

References 28 publications

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“…Similar to the procedure used in the static case, the values of ξ 0 and n in the dynamic case can be calculated by using an error minimising routine that best fits the FE data to the regression equation described in Eq. (15). Only the range of S values for ξ > 1 were considered for this analysis because of the limitation in FE accuracy as described above.…”

Section: B 3d Numerical Validationmentioning

confidence: 99%

“…Potential drop [5], [6], phased array ultrasonics [7], [8], time of flight diffraction [9], [10] and Rayleigh surface waves [11], [12] are existing non-destructive testing (NDT) methods used to detect and size cracks, with these conventional techniques normally being employed at periodic plant shutdowns. Recently, structural health monitoring (SHM) is gaining more popularity as a replacement for traditional NDT methods because it can usually operate continuously during plant operation, avoids the cost of repeated access to difficult-to-access areas [13], [14] and has the ability to track the rate of damage progression [15]. However, the NDT techniques discussed above would not be practical in structural health monitoring over large volumes of welds because of the limited inspection coverage per transducer.…”

Section: Introduction and Related Workmentioning

confidence: 99%

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Scattering of the Fundamental Shear Guided Wave From a Surface-Breaking Crack in Plate-Like Structures

Chua

Cawley

Nagy

2019

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Cracks in critical sections of steel structures pose a major safety concern in many industries. Existing high frequency ultrasonic techniques offer high detection sensitivity to cracks but have poor inspection volume coverage, limiting their practical use for monitoring large areas of structures. Low frequency guided waves have relatively high inspection area coverage and are currently used in pipeline monitoring for corrosion defects, but face challenges in detecting critical cracks which often cause over an order of magnitude lower cross sectional area loss. A study of scattering from small cracks in a thin-walled (<12 mm) section with an incident plane SH0 guided wave at higher frequencies but remaining below the SH1 cut-off is presented here using quasistatic approximations, the aim being to explore the possibility of using this regime for crack growth monitoring applications. A 3D solution was developed using dimensional analysis, which showed that the SH0 reflection ratio is proportional to frequency to the power 1.5, to the effective crack size cubed, and is inversely proportional to the plate thickness and to the square root of the distance from the crack to the receiving sensor. Finite element analysis was used to validate these power coefficients and to calculate the proportionality constant. The results show that a higher inspection frequency offers improved sensitivity but the validity of the results here is limited to the SH1 cut-off frequency. The predicted 3D solution was validated by measurements on a pipe with a progressively grown notch.

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Section: B 3d Numerical Validationmentioning

confidence: 99%

Section: Introduction and Related Workmentioning

confidence: 99%

Scattering of the Fundamental Shear Guided Wave From a Surface-Breaking Crack in Plate-Like Structures

Chua

Cawley

Nagy

2019

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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“…It is pertinent to point out that fundamental lamb wave modes exist majorly at smaller product value of f–d. The antisymmetric modes have been revealed to be more sensitive to defects at a higher frequency than the symmetric mode in detecting microcracks [ 63 , 64 , 65 ]. It was revealed in the study done by Alleyne and Cawley in [ 64 ] that the sensitivity of the fundamental modes of the lamb waves are functions of damage depth, h to guided wave thickness, d ratio (

).…”

Section: Ultrasonic Guided Wave Ugwmentioning

confidence: 99%

Review of Current Guided Wave Ultrasonic Testing (GWUT) Limitations and Future Directions

Olisa

Khan

Starr

2021

Sensors

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Damage is an inevitable occurrence in metallic structures and when unchecked could result in a catastrophic breakdown of structural assets. Non-destructive evaluation (NDE) is adopted in industries for assessment and health inspection of structural assets. Prominent among the NDE techniques is guided wave ultrasonic testing (GWUT). This method is cost-effective and possesses an enormous capability for long-range inspection of corroded structures, detection of sundries of crack and other metallic damage structures at low frequency and energy attenuation. However, the parametric features of the GWUT are affected by structural and environmental operating conditions and result in masking damage signal. Most studies focused on identifying individual damage under varying conditions while combined damage phenomena can coexist in structure and hasten its deterioration. Hence, it is an impending task to study the effect of combined damage on a structure under varying conditions and correlate it with GWUT parametric features. In this respect, this work reviewed the literature on UGWs, damage inspection, severity, temperature influence on the guided wave and parametric characteristics of the inspecting wave. The review is limited to the piezoelectric transduction unit. It was keenly observed that no significant work had been done to correlate the parametric feature of GWUT with combined damage effect under varying conditions. It is therefore proposed to investigate this impending task.

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“…Apart from these, crevice, galvanic, fretting, groove, fatigue, edge and stress corrosion are also encountered in various loaded and dynamic loaded structures [ 124 , 125 , 126 ]. Fromme et al [ 127 ] studied the corrosion based thickness loss of marine steel plates, partly immersed in salt water. A partially noncontact method was used in which the Lamb waves (A 0 and S 0 ) were simultaneously excited using wedge transducer (at a center frequency of 450 KHz) and the reflected signal was collected with a laser interferometer.…”

Section: Research Literature Review On Various Aspects Of Ugws Tecmentioning

confidence: 99%

Structural Health Monitoring (SHM) and Determination of Surface Defects in Large Metallic Structures using Ultrasonic Guided Waves

Abbas

Shafiee

2018

Sensors

113

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Ultrasonic guided wave (UGW) is one of the most commonly used technologies for non-destructive evaluation (NDE) and structural health monitoring (SHM) of structural components. Because of its excellent long-range diagnostic capability, this method is effective in detecting cracks, material loss, and fatigue-based defects in isotropic and anisotropic structures. The shape and orientation of structural defects are critical parameters during the investigation of crack propagation, assessment of damage severity, and prediction of remaining useful life (RUL) of structures. These parameters become even more important in cases where the crack intensity is associated with the safety of men, environment, and material, such as ship’s hull, aero-structures, rail tracks and subsea pipelines. This paper reviews the research literature on UGWs and their application in defect diagnosis and health monitoring of metallic structures. It has been observed that no significant research work has been convened to identify the shape and orientation of defects in plate-like structures. We also propose an experimental research work assisted by numerical simulations to investigate the response of UGWs upon interaction with cracks in different shapes and orientations. A framework for an empirical model may be considered to determine these structural flaws.

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High-frequency guided ultrasonic waves to monitor corrosion thickness loss

Cited by 7 publications

References 28 publications

Scattering of the Fundamental Shear Guided Wave From a Surface-Breaking Crack in Plate-Like Structures

Scattering of the Fundamental Shear Guided Wave From a Surface-Breaking Crack in Plate-Like Structures

Review of Current Guided Wave Ultrasonic Testing (GWUT) Limitations and Future Directions

Structural Health Monitoring (SHM) and Determination of Surface Defects in Large Metallic Structures using Ultrasonic Guided Waves

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