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Frequency and temperature dependence of acoustic properties of polymers used in pulse-echo systems
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå tekniska universitet.
2003 (English)In: Proceedings, 2003 IEEE Ultrasonics Symposium: October 5 - 8, 2003, Hilton Hawaiian Village, Honolulu, Hawaii ; an international symposium / / [ed] Donald E. Yuhas, Piscataway, NJ: IEEE Communications Society, 2003, 885-888 p.Conference paper (Refereed)
Abstract [en]

In ultrasonic pulse-echo systems, polymers like PMMA (polymethylmethacrylate) and PEEK (polyetheretherketone) are often used as buffer-rods, placed between the ultrasound transducer and the unknown material (liquid, gas, or solid material). Provided the acoustic properties of the buffer-rods are known, it is possible to calculate these also for the unknown material, based on reflections between the buffer-rod and the unknown medium. However, temperature changes also affect these properties. In this paper we present a method for measuring acoustic attenuation, speed of sound and density, for buffer-rod materials. We also give experimental values for PMMA and PEEK, for temperatures between 5/spl deg/C and 37/spl deg/C, and for 5 MHz and 10 MHz ultrasound frequency.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2003. 885-888 p.
Research subject
Signal Processing; Industrial Electronics
URN: urn:nbn:se:ltu:diva-34013DOI: 10.1109/ULTSYM.2003.1293541Local ID: 819e3d10-6799-11db-8cbe-000ea68e967bISBN: 0-7803-7922-5OAI: diva2:1007262
IEEE Ultrasonics Symposium : 05/10/2003 - 08/10/2003
Godkänd; 2003; 20061005 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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