Ultrasonic Defect Detection of Structural Plates Using Quasi-Rayleigh Waves

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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 energy from one side of a plate to another, which helps to overcome one-sided obstacles (such as cross-pieces, reinforcement elements). The article describes characteristic properties of quasi-Rayleigh waves that are important for the proper (in terms of frequency in particular) design of the excitation of waves towards the structure. FEM simulation results then provide information regarding the sensitivity of the wave response to the presence and sizes of surface defects (perpendicular slots) in an isotropic material with the properties of steel. The theoretical knowledge is set against experimental measurements obtained with the use of a steel plate with cross-pieces welded to it.

[1] L. Écsi, P. Élesztős, R. Jančo. On the stress solution of hypoelastic material based models using objective stress rates, APLIMAT 2016 - 15th Conference on Applied Mathematics 2016, Proceedings, Bratislava, 2 - 4 February 2016, 280 - 297, ISBN 978-802274531-4.

[2] K. Frydrýšek, R. Jančo. Simple planar truss (linear, nonlinear and stochastic approach), Journal of Mechanical Engineering - Strojnícky časopis 2016 (66), No. 2, 5 - 12, DOI: 10.1515/scjme-2016-0013.

[3] K. F. Graff. Wave motion in elastic solids, Oxford university press, London, 1975, ISBN-13: 978-0486667454.

[4] F. Moser, L. J. Jacobs, J. Qu. Application of finite element methods to study transient wave propagation in elastic wave guides, Progress in Quantitative Non-destructive Evaluation, Vol l7, Plenum Press, New York, 1998, ISBN 978-1-4615-5339-7.

[5] M. Géradin, D. Rixen. Mechanical Vibrations: Theory and Application to Structural Dynamics (second edition), John Wiley & Sons, 1997, ISBN 13: 9780471975465.

[6] M. Castaings, E. Le Clezio, B. Hosten. Modal decomposition method for modelling the interaction of Lamb waves with cracks, J. Acoust. Soc. Am 2002 (112), No. 6, 2567 – 2582, ISSN 1520-8524.

[7] V. Chmelko. Vrubové účinky v prevádzke strojov a konštrukcií, Vydavateľstvo STU, 2015, ISBN 978-80-227-4482-9.

[8] V. Chmelko, V. Kliman, M. Garan. In-time monitoring of fatigue damage, Procedia Engineering 2015 (101), 93 – 100.

[9] M. Hlavatý, L. Starek. The detection of defects of mechanical structures using surface acoustic waves (SAW), Engineering Mechanics 2011, Svratka, Czech Republic, 191 - 194

[10] L. Magdolen, M. Masaryk. Flywheel storage energy, Conference Gepeszet 2012, May 24-25, 2012, Budapest, Hungary, Conference proceedings, Budapest university of Technology and Economy BME Budapest, 2012, ISBN 978-963-313-055-1.

[11] B. Masserey, P. Fromme. On the reflection of coupled Rayleigh-like waves at surface defects in plates, J. Acoust. Soc. Am 2008 (123), No. 1, 88 – 98, ISSN 1520-8524.

[12] B. Masserey, P. Fromme. Surface defect detection in stiffened plate structures using Rayleigh-like waves, NDT&E International 2009 (42), 564 – 572, ISSN 0963-8695.

[13] M. Musil. Crack localization and quantification, Journal of Mechanical Engineering - Strojnícky časopis 2001 (52), No. 2, 103 - 116, ISSN 0039-2472

[14] M. Musil. Localization and quantification of breathing crack. Journal of Dynamic Systems Measurement and Control-Transactions of the ASME 2006 (128), No. 2, 458 - 462, ISSN 0022-0434

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