Visualization device for ultrasonic transmission process

Abstract

The invention provides a visualization device for an ultrasonic transmission process, belongs to the field of photoelastic mechanics, and aims at overcoming the problems that the existing photoelastic instrument can meet only the requirement of static photoelastic observation and measurement, the transmission characteristic of the ultrasonic wave in solid can be partially displayed, or real-time control cannot be carried out, as well as observing and measuring the ultrasonic transmission imaging in the solid. The device comprises a pulse generator, an ultrasonic transducer, a signal processor, a photoelastic system and a signal amplifier. Compared with the prior art, the device has the advantages that an ultrasonic exciter and an LED light source can be synchronously controlled; the stroboscopic time, driving pulse width and amplitude of the LED light source can be adjusted; in addition, the delay time can be automatically changed after remaining for a period of time in each delay, and therefore, the transmission of the ultrasonic wave in one cycle can be quantitatively observed and measured.

Description

technical field [0001] The invention belongs to the field of optical elastic mechanics, and in particular relates to a visualization device for ultrasonic propagation process, which is used for observing ultrasonic propagation imaging in solids. Background technique [0002] Ultrasound has the characteristics of high frequency, short wavelength, good directionality and no radiation damage. Therefore, ultrasonic nondestructive testing is widely used in steel manufacturing, machinery manufacturing, petrochemical, railway transportation, electronic manufacturing and other work departments. However, ultrasonic waves are invisible, and the scattering research of ultrasonic waves encountering defects can only be calculated theoretically. In the practical application of non-destructive testing engineering, the defect is generally judged by the echo or transmitted wave signal obtained by the ultrasonic transducer, but the echo or transmitted signal obtained from the transducer is lo...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a visualization device for ultrasonic propagation process, the purpose of which is to overcome the problem that the existing photoelastic instrument can only meet the static photoelastic observation, can only partially display the propagation characteristics of ultrasonic waves in solids or cannot be controlled in real time, and realize the ultrasonic wave in solids. Imaging in propagation

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