Measurement of acoustic impedance of thin polymeric films by acoustic resonant spectroscopy

Hironori Tohmyoh, Takuya Imaizumi, Masumi Saka

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


An acoustic resonant spectroscopy technique for measuring the acoustic impedance of micron-scale polymer films without knowing any values of ultrasonic velocity, thickness and density has been developed. The method, which is based on spectral analysis, observes the acoustic resonance between water, the film and a tungsten plate with high acoustic impedance. The acoustic impedances of poly(vinyl chloride), poly(vinyl alcohol) and nylon films are determined by the spectroscopy technique. Moreover, the values of ultrasonic velocity and density of the films are also determined from the resonance frequencies of the films.

Original languageEnglish
Pages (from-to)2349-2352
Number of pages4
JournalKey Engineering Materials
Issue numberPART 4
Publication statusPublished - 2007
EventAsian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China
Duration: 2006 Nov 222006 Nov 25


  • Acoustic impedance
  • Acoustic resonant spectroscopy
  • Density, Poly(vinyl chloride) film
  • Nylon film
  • Polyvinyl alcohol film
  • Ultrasonic velocity


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