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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Reflection-Type Ultrasonic Phase Conjugate Imaging System with a Waveguide
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Reflection-Type Ultrasonic Phase Conjugate Imaging System with a Waveguide

机译:带波导的反射型超声波相位共轭成像系统

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摘要

A reflection-type ultrasonic C-mode imaging system with an ultrasonic phase conjugator and a waveguide has been built, and images at 10 MHz have been obtained for metal samples with surface undulations. Surface or sub-surface elastic properties were visualized with a small influence of the surface roughness. The waveguide worked to enlarge the effective aperture of the phase conjugator, to smooth the incident-angle dependence of the phase conjugate reflectivity, and to improve the signal-to-noise ratio of the phase conjugate signals. Schlieren images of the ultrasonic fields in the system are also presented.
机译:建立了具有超声相位共轭器和波导的反射型超声C模式成像系统,并已获得具有表面起伏的金属样品的10 MHz图像。在表面粗糙度影响较小的情况下,可以看到表面或次表面的弹性特性。波导用于增大相位共轭器的有效孔径,以平滑相位共轭反射率的入射角依赖性,并改善相位共轭信号的信噪比。还显示了系统中超声场的Schlieren图像。

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