Carbon-Fiber Composite Materials for Medical Transducers

  • Toshio Kondo

A composite, consisting of two or more materials, was developed, wherein optimum acoustic properties were obtained by the judicious choice of its constituents. Specifically, unidirectional carbon-fiber composite materials have a high acoustic impedance and a light weight. Therefore, it is possible to formulate a composite with broad-range acoustic impedance. By the approach described in this chapter, the applications utilizing such carbon-fiber composite in medical transducers are possible. In what follows, the acoustic properties of the carbon-fiber composite materials are presented and a method of fabricating the composite materials to form backing layers will be elaborated on. The characteristics of a prototype transducer, which uses this new composite, will be discussed.


Acoustic Impedance Acoustic Property Acoustic Velocity Tungsten Powder Backing Material 
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  1. Auld BA (1990), Acoustic Fields and Waves in Solids, 2nd ed., Vol. 1. Krieger Publishing, Florida.Google Scholar
  2. Daniel IM and Ishai O (1994), Engineering Mechanics of Composite Materials, Oxford University Press, New York.Google Scholar
  3. Fukuda H and Ben G (1989), Introductory Mechanics of Composite Materials [in Japanese], Kokon Shoion, Tokyo.Google Scholar
  4. Grewe MG, Gururaja TR, Shrout TR and Newnham RE (1990), Acoustic Properties of Particle/ Polymer Composites for Ultrasonic Transducer Backing Applications, IEEE Trans, Ultrason., Ferroelect., and Freq. Cont., vol. 37, no. 6, pp. 506-514.CrossRefGoogle Scholar
  5. Kondo T and Kitatuji M (2004), Composite Materials and Measurement of Their Acoustic Proper-ties, Japanese Journal of Applied Physics, 42-5B:2914-2915.CrossRefGoogle Scholar
  6. Kondo T, Izumi M, and Kanda H (2006), Broad Band Ultrasonic Transducer Using Carbon Fiber Composites for a Backing Material, IEEE Ultrasonic Symposium Proceedings, pp. 1537-1540.Google Scholar
  7. Krimholtz R, Leedom D, and Matthaei G (1970), New Equivalent Circuit for Elementary Piezo-electric Transducers, Electronics Letters, 6:398.CrossRefGoogle Scholar
  8. Kumamoto O (1985) Ultrasonic Handbook [in Japanese], Nikkan Kogyo Shinbunsha, Tokyo.Google Scholar
  9. Lees S, Gilmore RS and Kranz PR (1973), Acoustic Properties of Tungsten-Vinyl Composites, IEEE Trans, Sonics Ultrason., vol. SU-20, no. 1, pp. 1-2.Google Scholar
  10. Nippon Graphite Fiber Corporation (2007), Technical Data, Granoc Yarn XN, YT, YSH and YS, NGF Information, Tokyo, Japan.Google Scholar
  11. Thinky Technology (2007), Revolution in Mixing Technology, pp. 1-2, THINKY Corporation, Tokyo.Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Toshio Kondo
    • 1
  1. 1.Tokushima Bunri UniversityKagawaJapan

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