The reflection of guided waves from notches in pipes: a guide for interpreting corrosion measurements

Demma, A.; Cawley, P.; Lowe, M. J. S.; Roosenbrand, A.G.; Pavlakovic, Brian

doi:10.1016/j.ndteint.2003.09.004

Cited by 238 publications

(173 citation statements)

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“…Advantages of such a technique were successfully demonstrated on the long range applications for rapid screening of pipes [9][10][11][12], rails [13,14] and transmission lines [15]. At present, UGW technology is used primarily to detect and locate defective areas.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

Ultrasonic Guided Wave Propagation through Welded Lap Joints

Jankauskas

Mažeika

2016

Metals

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“…The minimum variance imaging method was applied in Hall ' s work to detect and locali ze a through-ho le and two thro ugh-thickness notches according to scattering assumptions in an aluminum plate [23]. Besides, the scattering 3 http://mc.manuscriptcentral.com/insi Insight mechanism and related theoretical models were studi ed by simulation computation and experiments [24][25][26][27]. However, most research about detection or imaging based on guided wave scattering are focused on artificial defects, such as the hand-cut notch, glued-on steel rods, etc.…”

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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“…Since local wall thinning caused by FAC occurs inside the elbows due to the flowing high temperature and high pressure water with high velocity, a big disaster may occur if this defect continues to grow without stopping. Therefore, structural evaluation of elbows with local wall thinning becomes more important in order to maintain the integrity of coolant piping systems [1,2].…”

Section: Introductionmentioning

confidence: 99%