2017
DOI: 10.1515/scjme-2017-0016
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Ultrasonic Defect Detection of Structural Plates Using Quasi-Rayleigh Waves

Abstract: This article discusses the application of so-called ultrasonic quasi-Rayleigh waves to detect surface defects of mechanical constructions, namely plate structures. The application of quasi-Rayleigh waves allows the extension of the scope of detection using conventional ultrasonic methods that are based on bulk waves. This extension means larger distances as well as higher sensitivity of the detection of surface defects such as fatigue or corrosion cracks. An advantage of this method is the transfer of wave ene… Show more

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Cited by 7 publications
(3 citation statements)
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(4 reference statements)
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“…Modelling principles followed in wave-related problems differ from those applicable to structural problems [10]. The finite element type and size and the time step are chosen with regard to sufficient accuracy of the calculation in terms of numerical dispersion and period error [9]: aelement type: PLANE 183 aelement size: Δl = 8,38.10 -5 m atime step: Δt = 7,016.10 -9 s…”
Section: Propagation Of Quasi-rayleigh Wavesmentioning
confidence: 99%
See 1 more Smart Citation
“…Modelling principles followed in wave-related problems differ from those applicable to structural problems [10]. The finite element type and size and the time step are chosen with regard to sufficient accuracy of the calculation in terms of numerical dispersion and period error [9]: aelement type: PLANE 183 aelement size: Δl = 8,38.10 -5 m atime step: Δt = 7,016.10 -9 s…”
Section: Propagation Of Quasi-rayleigh Wavesmentioning
confidence: 99%
“…This is because of shear or longitudinal standing waves formed at values of hd /2b > 0.1 in the wave-cut interaction. Such standing waves are formed if so-called cut-off frequencies are present in the spectral band of impulses [5], [9]. The effects of such frequencies impede or even prevent accurate quantification of the perpendicular cut depth.…”
Section: Experimental Equipment and Failure Detectionmentioning
confidence: 99%
“…Ultrasounds are widely used in industry, e.g. to detect surface defects of mechanical structures [1]. A special type of ultrasounds is ultrasonic noise.…”
Section: Introductionmentioning
confidence: 99%