Micro interferometric acoustic lens: Mesh-free modeling with experimental verification

Tribikram Kundu, Dominique Placko, Tamaki Yanagita, Shamachary Sathish

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

4 Scopus citations

Abstract

The ultrasonic field generated by a Micro Intereferometric Acoustic Lens used for high precision Rayleigh wave velocity measurements is modeled by the recently developed mesh-free technique called Distributed Point Source Method (DPSM). The field generated by the three individual ultrasonic transducer elements forming the micro intereferometric acoustic lens are computed and compared with experimental measurements. Qualitative agreement between the theoretical and experimental results is observed; both results show converging beams up to the focal point and then the beams diverge. However, some of the minute detailed features in the generated ultrasonic field could only be observed in the computed results. Effects of non-uniform surface of the transducer and its contribution to the non-uniform ultrasonic source strength are investigated to understand and optimize the acoustic lens for localized quantitative elastic property measurements.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7295
DOIs
Publication statusPublished - 2009
EventHealth Monitoring of Structural and Biological Systems 2009 - San Diego, CA, United States
Duration: Mar 9 2009Mar 12 2009

Other

OtherHealth Monitoring of Structural and Biological Systems 2009
CountryUnited States
CitySan Diego, CA
Period3/9/093/12/09

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Keywords

  • Acoustic Microscope Lens
  • DPSM
  • Numerical Modeling
  • Transducer modeling
  • Ultrasonic field

ASJC Scopus subject areas

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

Cite this

Kundu, T., Placko, D., Yanagita, T., & Sathish, S. (2009). Micro interferometric acoustic lens: Mesh-free modeling with experimental verification. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7295). [72951E] https://doi.org/10.1117/12.814936