Ultrasonic damage-free checking focusing probe device

Abstract

The invention discloses a focusing probe device of ultrasonic nondestructive detection used for detecting the defect of a detected sample, comprising a cylinder used for fixing the ultrasonic focusing probe; the ultrasonic focusing probe is connected with the big end of an inner cylinder in a sealing mode; the bottom end of the inner cylinder is encapsulated with a sound transmission film; a liquid medium used for transmission of the ultrasonic wave is arranged in the cylinder container of the inner cylinder; the inner cylinder provided with the probe is connected into a whole with an outer cylinder by thread in an adjustable mode; under the conditions of the same gain, the capability of detecting the defect of the sample is much better than a general straight probe; the water distance of the device leads the display distance of an initial wave, an interface wave, a defect wave and a bottom wave in the screen of a flaw detector to be pulled open and leads the area of the detected sample to be outside a triple near-field area of the ultrasonic wave on a beam axis, thus improving the resolution of waveform display and the detection sensitivity, leading the operation of finding and judging the defect wave in the process of detecting the defect to be convenient, saving a water tank and a water supply device and realizing field detection.

Description

technical field [0001] The invention relates to an ultrasonic focusing probe device for non-destructively detecting defects of a sample to be inspected. More specifically, the present invention relates to a detection device with an ultrasonic focused probe, especially a focused probe capable of contact detection of carbon fiber composite materials, and a straight probe suitable for contact detection of flat-plate materials. Background technique [0002] Ultrasonic testing is one of the five conventional testing techniques. It has been widely used in ultrasonic testing of castings, plates, bars, pipes, welds and other materials. The ultrasonic probe is an important component of the ultrasonic testing system, and it is an electroacoustic transducer that generates and receives ultrasonic waves. Its performance directly affects the characteristics of the emitted ultrasonic waves and affects the detection ability of ultrasonic waves. In ultrasonic flaw detection, due to the di...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiency that the existing non-destructive testing ultrasonic straight probe cannot effectively distinguish the starting wave from the defect wave and the bottom wave when testing thin materials, and to use the focusing probe for contact method testing, the present invention provides a portable and easy-to-operate Ultrasonic non-destructive testing probe device, the ultrasonic testing probe device is used in conjunction with general focusing probes and straight probes, which can conveniently and effectively increase the distance between the starting wave, defect wave and bottom wave on the fluorescent display screen of the flaw detector, improve resolution, and avoid The friction and wear between the probe and the tested sample during the detection process

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