Determination of acoustic properties of thin polymer films utilizing the frequency dependence of the reflection coefficient of ultrasound

Hironori Tohmyoh, Yuhei Sakamoto

研究成果: Article査読

3 被引用数 (Scopus)

抄録

This paper reports on a technique to measure the acoustic properties of a thin polymer film utilizing the frequency dependence of the reflection coefficient of ultrasound reflected back from a system comprising a reflection plate, the film, and a material that covers the film. The frequency components of the echo reflected from the back of the plate, where the film is attached, take their minimum values at the resonant frequency, and from these frequency characteristics, the acoustic impedance, sound velocity, and the density of the film can be determined. We applied this technique to characterize an ion exchange membrane, which has high water absorbability, and successfully determined the acoustic properties of the membrane without getting it wet.

本文言語English
論文番号114901
ジャーナルReview of Scientific Instruments
86
11
DOI
出版ステータスPublished - 2015 11 1

ASJC Scopus subject areas

  • 器械工学

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