The proceedings of the JSME annual meeting
Online ISSN : 2433-1325
2006.1
Session ID : 3945
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3945 Acoustic Resonant Spectroscopy for Measurements of Acoustic Properties of Thin Polymer Films
Hironori TOHMYOHTakuya IMAIZUMIMasumi SAKA
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
Acoustic resonant spectroscopy technique for measuring the acoustic impedance, ultrasonic velocity and density of micron-scale polymer films is developed. The method observes the acoustic resonance between water, film and the tungsten plate at the frequency range of 20-70MHz, where the interface between the examined film and the plate is vacuum-sealed, and it enables us to characterize a low-density polyethylene film with low acoustic impedance of about 1.9MNm^<-3>s and a poly (vinyl chloride) film as thin as about 8μm.
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© 2006 The Japan Society of Mechanical Engineers
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