Variable low temperature acoustic microscopy and its application to polymers

Kazushi Yamanaka, Yoshihiko Nagata, Toshio Koda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A low temperature acoustic microscope has been developed to study mechanical and acoustic property of materials at temperatures from 30°C to - 94°C. In the application to a 30/Lm thick PVDF film, sharpening of the half wavelength resonance of longitudinal wave across the film was observed by cooling. For 0.6 mm thick epoxy adhesive layer, struc- tures not visible at ambient temperature became clear when the sample was cooled to - 30°C. This improvement was explained in terms of the decrease in the attenuation loss and impedance mismatching loss. Basedon those results, temperature controlled acoustic imaging is proposed for nondestructive evaluation of polymers.

Original languageEnglish
Pages (from-to)292-295
Number of pages4
JournalJapanese journal of applied physics
Volume29
DOIs
Publication statusPublished - 1990 Jan

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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