Metamorphosis of bulk waves to Lamb waves in anisotropic piezoelectric crystals

A. Shelke, A. Habib, U. Amjad, M. Pluta, Tribikram Kundu, U. Pietsch, W. Grill

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Acoustic bulk waves were excited by local electric field probe in an anisotropic piezo-electric crystal Lithium Niobate (X-cut). A narrow pulse with a width of 25 ns was used for excitation to obtain wide frequency content in the Fourier domain. A wide spectrum ensures metamorphosis of bulk waves into Lamb waves for scan lengths comparable to the involved wavelengths. The low frequency content experiences multiple reflections from the two surfaces of the plate and disperses along the propagation direction. Acoustic bulk wave's evolution and transformation to Lamb waves are illustrated and explained with the aid of the Lamb wave dispersion phenomenon. The holographic images in the Fourier domain exemplify the metamorphosis of waves during propagation following the excitation at an approximate point source.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7984
DOIs
Publication statusPublished - 2011
EventHealth Monitoring of Structural and Biological Systems 2011 - San Diego, CA, United States
Duration: Mar 7 2011Mar 10 2011

Other

OtherHealth Monitoring of Structural and Biological Systems 2011
CountryUnited States
CitySan Diego, CA
Period3/7/113/10/11

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Keywords

  • Lamb waves
  • local electric field probe
  • scanned ultrasound imaging
  • Ultrasound holography

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Shelke, A., Habib, A., Amjad, U., Pluta, M., Kundu, T., Pietsch, U., & Grill, W. (2011). Metamorphosis of bulk waves to Lamb waves in anisotropic piezoelectric crystals. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7984). [798415] https://doi.org/10.1117/12.880598