Acoustic velocity measurement device and method for large-size elastic material

Abstract

The invention provides an acoustic velocity measurement device and method for a large-size elastic material. The acoustic velocity measurement device comprises a system control computer, a movable rack, a receiving hydrophone, a wide-band and high-frequency transmission transducer, a movable rack controller, a signal source, a power amplifier, a digital collection card and a measurement amplifier, wherein the signal source, the power amplifier and the wide-band and high-frequency transmission transducer are electrically connected in sequence; the system control computer, the data collection card, the measurement amplifier and the receiving hydrophone are electrically connected in sequence, and the synchronous end of the data collection card is electrically connected with the synchronous end of the signal source; the system control computer, the movable rack controller and the movable rack are electrically connected in sequence; a material to be measured is horizontally placed in a tiltable bracket in a water pool, the wide-band high-frequency transmission transducer is placed under the material to be measured, and the receiving hydrophone is placed on the material to be measured and fixed on the movable rack. According to the measurement device, the accuracy of the measurement result is ensured. The acoustic velocity in the large-size elastic material obtained by the method is in accordance with the actual situation.

Description

Technical field [0001] The invention relates to a sound velocity measurement device, and the invention also relates to a sound velocity measurement method. Specifically, it is a device and method for measuring the sound velocity of large-size elastic materials. Background technique [0002] The speed of sound in an elastomer reflects the physical properties of its material, and its discussion has always been a hot spot in the field of materials science. Most of the existing measurement methods are to obtain the sound velocity of the material by measuring the Young's modulus or other elastic coefficients of the material. Commonly used methods for measuring Young's modulus include: sine force excitation method, resonance experiment method, free attenuation method, etc.; for the static Young's modulus of materials, often used: tensile method to measure the Young's modulus of metal wire, and metal Young's modulus Modulus, string modulus, tangent modulus and Poisson’s ratio test met...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a sound velocity measurement device for large-scale elastic materials that can be used for sound velocity measurement and can also solve the laboratory simulation problem of low-frequency sound propagation research in simple shallow sea ocean channels

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