Ultrasonic guided wave tomography for the inspection of the fuel tanks floor

Mažeika, Liudas; Kažys, R.; Raišutis, Renaldas; Šliteris, Reimondas

doi:10.1504/ijmpt.2011.040291

Cited by 16 publications

(11 citation statements)

References 7 publications

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“…The velocities of the fundamental guided wave modes in the case of 1 mm thickness steel plate at the selected operation frequency are presented in Table 1. The symmetric S0 guided wave mode was selected for analysis due to several key properties of this wave mode [37]:…”

Section: Dispersion Curvesmentioning

confidence: 99%

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Ultrasonic Guided Wave Propagation through Welded Lap Joints

Jankauskas

Mažeika

2016

Metals

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Abstract:The objective of the research presented here is the investigation of ultrasonic guided wave (UGW) propagation through the lap joint welded plates used in the construction of a storage tank floors. The investigations have been performed using numerical simulation by finite element method (FEM) and tested by measurement of the transmission losses of the guided waves transmitted through the welded lap joints. Propagation of the symmetric S 0 mode in the welded stainless steel plates in the cases of different lap joint overlap width, operation frequency, and additional plate bonding caused by corrosion were investigated. It was shown that the transmission losses of the S 0 mode can vary in the range of 2 dB to 8 dB depending on the ratio between lap joint width and wavelength. It was also demonstrated that additional bonding in the overlap zone caused by corrosion can essentially reduce transmission losses.

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Section: Dispersion Curvesmentioning

confidence: 99%

“…It should be noted that the model is presented on different vertical and horizontal scales. The symmetric S0 guided wave mode was selected for analysis due to several key properties of this wave mode [37]:…”

Section: Transmission Losses Dependence From Lap Joint Width and Opermentioning

confidence: 99%

Ultrasonic Guided Wave Propagation through Welded Lap Joints

Jankauskas

Mažeika

2016

Metals

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“…The transmission tomography of propagating ultrasonic Lamb waves was selected as promising technique for investigation of the fuel tank floor [6][7][8].…”

Section: Application Of the Contact Type Investigation Of Welded Steementioning

confidence: 99%

Application of ultrasonic guided waves for non-destructive testing of large and complex geometry engineering structures

Raišutis¹,

Kažys²,

Mažeika³

et al. 2017

Vib. proced.

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The wide group of large engineering constructions made from welded metal components and modern composite materials during daily exploitation under non-stationary loads, continuous influence of vibrations and complicated environmental conditions have demand of periodical tests in order to avoid appearance and evolution of the defects. All of them have one common feature – large areas to be tested and the complex geometry. The objective is to improve air-coupled and contact type testing techniques for excitation and reception of appropriate modes of ultrasonic guided waves in large and complex structures. Also, to develop inspection techniques which enable to detect required types of internal defects. The air-coupled and contact ultrasonic techniques for investigation of large and complex geometry objects, such as composites for aerospace applications and petroleum tanks, have been developed. The investigation of propagation effects of ultrasonic guided (Lamb) waves in the plates of the tank floor has indicated relation between reconstructed properties of guided waves and expected presence of corrosion deposits.

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“…And the propagation distance is give n by the total propagation time of guided waves. So the fo rmula can be expressed as (5) In the fo rmul a, only lrpl is the unknown quantity. By solving the above formula, the position of the scattering point P can be uniquely determined, as well as the propagation and …”

Section: Scattering Model For Profile Lmaging Of Actual Defectsmentioning

confidence: 99%

“…It is necessary to implem ent a timely and effective detection on these defects to avoid potential oil-gas leakages or even explos ions [4] . However, some tank floors cannot be directly reached a nd some bear quite large areas, so traditional point-to-point detection methods proved to be infeasible or ineffective for these situations [5][6]. Electromagnetic ultrasonic guided wave testing (EUGW) owns advantages of long detection distance by single-ended excitation and 100% c ross sectional detection [7-1 0].…”

Section: Introductionmentioning

confidence: 99%

Profile imaging of actual defects in steel plate based on electromagnetic ultrasonic SH guided wave scattering

Wang¹,

Wang²,

Huang³

et al. 2017

insight

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, W. (2017) 'Prole imaging of actual defects in steel plate based on electromagnetic ultrasonic SH guided wave scattering.', Insight : non-destructive testing and condition monitoring., 59 (7). pp. 383-388. Further information on publisher's website:https://doi.org/10. 1784/insi.2017.59.7.383 Publisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Then the error between calculated profile and actual profile is defined and displayed on the plane of the rectangular coordinate system. Results show that the profile image almost clings to actual profile of the defect and the average profile error is only 4.3%. The proposed guided wave scattering model and profile imaging method are verified to be able to describe the profile of the actual defect with high-precision in steel plate.

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Ultrasonic guided wave tomography for the inspection of the fuel tanks floor

Cited by 16 publications

References 7 publications

Ultrasonic Guided Wave Propagation through Welded Lap Joints

Ultrasonic Guided Wave Propagation through Welded Lap Joints

Application of ultrasonic guided waves for non-destructive testing of large and complex geometry engineering structures

Profile imaging of actual defects in steel plate based on electromagnetic ultrasonic SH guided wave scattering

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