New instrument for rapid and accurate measurement of ultrasonic velocity and attenuation using a minicomputer system

Haruhiko Nakajima, Hajime Tanaka, Osamu Shimazaki, Kazushi Yamanaka, Takayuki Kinoshita, Yasaku Wada

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A new instrument has been developed for rapid continuous recording of temporal changes in ultrasonic velocity and attenuation constant in a material. A set of data of changes in velocity and attenuation is obtained within the interval of one echo train, usually 0.1 msec or longer. A high-speed minicomputer is used for controlling the whole electronic system and data processing. The accuracy is 10−5to 10−6for the velocity change and 10−3for the attenuation change in a sample length of 3 cm. Data showing the speed and accuracy of the instrument are given.

Original languageEnglish
Pages (from-to)1379-1385
Number of pages7
JournalJapanese journal of applied physics
Volume18
Issue number7
DOIs
Publication statusPublished - 1979 Jul

ASJC Scopus subject areas

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

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