TY - JOUR
T1 - New instrument for rapid and accurate measurement of ultrasonic velocity and attenuation using a minicomputer system
AU - Nakajima, Haruhiko
AU - Tanaka, Hajime
AU - Shimazaki, Osamu
AU - Yamanaka, Kazushi
AU - Kinoshita, Takayuki
AU - Wada, Yasaku
PY - 1979/7
Y1 - 1979/7
N2 - 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.
AB - 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.
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U2 - 10.1143/JJAP.18.1379
DO - 10.1143/JJAP.18.1379
M3 - Article
AN - SCOPUS:0018495186
VL - 18
SP - 1379
EP - 1385
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 7
ER -