Ultrasonic Absorption in Liquid Metals

Infrared Technique for Measuring Ultrasonic Absorption in Polycrystalline Metals

Ultrasonic Velocity Measurements in Liquid Metals Using Acoustic Wave Guides

The ultrasound Doppler velocimetry (UDV) is an innovative and non-invasive method to determine the velocity in liquid flows. Main advantages are the ability to investigate flows of opaque liquids and to deliver complete velocity profiles in real-time [1,2]. Therefore, the intention to apply this measuring technique to liquid metal flows is obvious with respect to the situation that until today ...

Ultrasonic Absorption Microscope

This paper constitutes a progress rersort on the develol•ment of an ultrasonic instrument for detecting microstructure. The principle of operation of the device (designated by the term "ultrasonic microscope") is as follows: The specimen is imbedded in a liquid, which closely matches it in acoustic impedance, and is irradiated with sho•t pulses of highdreqnency hound. Some of the ultrasonic ene...

Attenuation of ultrasonic waves in rolled metals.

Scattering of ultrasonic waves in polycrystals with texture is studied in this article. The attenuations of the three wave modes are determined as a function of dimensionless frequency and propagation direction, respectively, for given orientation distribution coefficients (ODCs). The calculation is done in the case of a statistically orthorhombic sample made up of cubic crystallites. The wave ...

An Ultrasonic Study on Anelasticity in Metals

Ultrasonic waves are highly sensitive to microstructural variations in materials and have been used extensively to investigate anharmonic effects in various metals and alloys[1-3]. A major focus of these studies is on the higher order elastic constants and their relation to the microstructure of the material. Ultrasonic techniques have also proven quite useful for characterizing the stress stat...