Frequency and temperature dependence of acoustic properties of polymers used in pulse-echo systems
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)
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
IdentifiersURN: urn:nbn:se:ltu:diva-34013DOI: 10.1109/ULTSYM.2003.1293541Local ID: 819e3d10-6799-11db-8cbe-000ea68e967bISBN: 0-7803-7922-5OAI: oai:DiVA.org:ltu-34013DiVA: diva2:1007262
IEEE Ultrasonics Symposium : 05/10/2003 - 08/10/2003
Godkänd; 2003; 20061005 (ysko)2016-09-302016-09-30Bibliographically approved