Precise measurements of bulk-wave ultrasonic velocity dispersion and attenuation in solid materials in the VHF range

Jun ichi Kushibiki, Ryoichi Okabe, Mototaka Arakawa

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A general method was established for precisely measuring velocity dispersion and attenuation in solid specimens with acoustic losses in the very high frequency (VHF) range, using the complex-mode measurement method and the diffraction correction method. Experimental procedures were presented for implementing such a method and demonstrated this measurement method in the frequency range of 50-230 MHz, using borosilicate glass (C-7740) as a dispersive specimen and synthetic silica glass (C-7980) as a nondispersive standard specimen. C-7980 exhibited no velocity dispersion; velocity was constant at 5929.14±0.03 m/s. C-7740 exhibited velocity dispersion, from 5542.27 m/s at 50 MHz to 5544.47 m/s at 230 MHz with an increase of about 2 m/s in the measured frequency range. When frequency dependence of attenuation was expressed as α = α0fβ, the results were as follows: α0 = 1.07 × 10-16 s2/m and β = 2 for C-7980 and α0 = 5.16 × 10-9 S1.25/m and β = 1.25 for C-7740.

Original languageEnglish
Pages (from-to)3171-3178
Number of pages8
JournalJournal of the Acoustical Society of America
Volume113
Issue number6
DOIs
Publication statusPublished - 2003 Jun 1

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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