EFFECTS OF COUPLERS ON ACOUSTIC VELOCITY-MEASUREMENT BY COMPLEX V(Z) METHOD

被引：2
作者：
NISHIDA, M
ENDO, T
ADACHI, T
MATSUMOTO, H
机构：
[1] OLYMPUS OPT CO LTD,INNOVAT TECHNOL DEV SECT,HACHIOJI,TOKYO 192,JAPAN
[2] TOKYO INST TECHNOL,DEPT ENGN SCI & MECH,MEGURO KU,TOKYO 152,JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1995年 / 34卷 / 5B期
关键词：
ACOUSTIC MICROSCOPE; V(Z) CURVE; REFLECTANCE FUNCTION; ACOUSTIC IMPEDANCE; COUPLER; ULTRASONIC WAVE; CRITICAL ANGLE; MATERIAL CHARACTERIZATION;
D O I：
10.1143/JJAP.34.2869
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effects of a coupling liquid on the measurement of acoustic velocities were theoretically and experimentally investigated. The reflectance function was obtained from complex V(z) curves measured with an amplitude-and-phase-measuring acoustic microscope. Theoretical and experimental analyses were performed for six different specimens with water and mercury-as couplers. Longitudinal, transverse and Rayleigh wave velocities were successfully measured provided that the acoustic impedance of the specimen was larger than that of the coupler by a factor of one to five. Longitudinal and transverse velocities were measured even if the acoustic impedance of the specimen was less than that of the coupler.
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页码：2869 / 2873
页数：5
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