GUIDED WAVE PROPAGATION IN ASYMMETRICAL CORRUGATED PLATE

Authors

  • Lim Fei Min Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor
  • Zair Asrar Ahmad Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor

Keywords:

Asymmetrical corrugated plate, dispersion curve

Abstract

Research on guided wave propagation in isotropic plates has been quite intensive in the past decade. However, the research on guide wave propagation in corrugated plate limited only to symmetrical type whilst the asymmetrical type has not been determined. Therefore, the behaviour of guided wave in asymmetrical corrugated plates still remains unknown. Hence, in the present study, guided wave dispersion curve for asymmetrical corrugated plates and effects of corrugated dimensions on the dispersion curves are determined. Two-dimensional and infinite plate with isotropic material is modelled by numerical method. Two parameters are affecting the results of dispersion curve which are corrugation height and half wavelength. The results show that the mode shapes are easier to identify if smaller ratio of corrugation height and half wavelength is used. The dispersion curve is reasonably well for small corrugation height but not so good for large corrugation height.

References

Friedrich Moser, Laurence J. Jacobs and Jianmin Qu. Modelling Elastic Wave Propagation in Waveguides with the Finite Element Method. NDT&E International. 1999.

Lord Rayleigh. On the Free Vibrations of an Infinite Plate of Homogeneous Isotropic Elastic Matter. Proc. London Math. Soc., 20, 255-235. 1889.

Lamb. H. On the Flexure of an Elastic Plate. Proc. London Math. Soc., 21, 70- 90. 1889.

Stefan Sorohan, Nicole Constantin, Mircea Gavan and Viorel Anghel. Extraction of Dispersion Curves for Waves Propagating in Free Complex Waveguides by Standard Finite Element Codes. Science Direct. 2010.

Viktorov I. A. Rayleigh-Type Waves on a Cylindrical Surface. Sov. Phys. Acoust., 4, pp. 131-136. 1958

Qu J., Berthelot Y. and Li Z. Dispersion of Guided Circumferential Waves in a Circular Annulus. Review of Progress in Quantitative Non-destructive Evaluation, Plenum, New York, 15, pp. 169-176. 1996.

A. El-Bahrawy. Stopbands and Passbands for Symmetric Rayleigh-Lamb Modes in a Plate with Corrugated Surfaces. Journal of Sound and Vibration 170 (2), 145 - 160. 1994.

S. Banerjee and T. Kundu. Symmetric and Asymmetric Rayleigh-Lamb Modes in Sinusoidally Corrugated Waveguides: An Analytical Approach. International Journal of Solids and Structures 43. 2006.

T. Kundu, S. Banerjee and K.V. Jata. An Experimental Investigation of Guided Wave Propagation in Corrugated Plates Showing Stop Bands and Pass Bands. Air Force Research Laboratory Wright Site. 2006.

David N. Alleyne and Peter Cawley. A 2-Dimensional Fourier Transform Method for the Quantitative Measurement of Lamb Modes. IEEE Ultrasonic Symposium. 1990.

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Published

2018-04-01

How to Cite

Min, L. F., & Ahmad, Z. A. (2018). GUIDED WAVE PROPAGATION IN ASYMMETRICAL CORRUGATED PLATE. Jurnal Mekanikal, 37(1). Retrieved from https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/45

Issue

Section

Mechanical

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