A portable Lamb wave detection device

Abstract

The invention discloses a portable Lamb wave detection device which is formed by probes, a probe clamp, a connection mechanism, a traveling mechanism, an axial regulation mechanism and an up-and-down regulator. According to the portable Lamb wave detection device, the connection mechanism can continuously regulate the length of a rack according to the width of a detected test piece; on one aspect, the axial regulation mechanism and the up-and-down regulator regulate a driving wheel and a driven wheel and also can ensure stable traveling of the detection device even when the test piece with a complex geometric surface is detected, and on the other aspect, the axial regulation mechanism and the up-and-down regulator regulate to keep excellent contact coupling of the probes and the detected surface; the probes adopt angle variable probes, can stimulate Lamb waves in different modes, and complete detection on quality of all welds on a connection line of two probes at each scanning point; the traveling mechanism drives the integral detection device to linearly travel to complete rapid detection on quality of the welds in the entire region of the detected test piece. The portable Lamb wave detection device disclosed by the invention implements real-time and accurate quantitative detection on quality of the welds.

Description

technical field [0001] The invention relates to a portable Lamb wave detection device, in particular to a Lamb wave non-destructive detection device suitable for welding seams. Background technique [0002] As an efficient and economical material processing method, welding has been more and more widely used in almost all industrial manufacturing fields such as rail transit, aerospace, petrochemical and so on in recent years. Welding quality directly affects the reliability of the welded structure and even the performance of the entire product. With the development of industrial technology, people have put forward stricter and higher standards for the safety and stability of welding quality. However, the welding process is relatively complicated, and it is easily disturbed by various factors, such as fluctuations in welding parameters, improper welding operations, etc., which will cause more serious welding defects such as welding cracks, incomplete penetration, and incomplet...

AI Technical Summary

Problems solved by technology

Obviously, the mechanical scanning accuracy directly determines the ultrasonic detection accuracy, but because the mechanical scanning part is limited by the mechanical inertia and scanning response speed, it is difficult to increase the scanning speed of the mechanical part, so it is difficult to balance the detection accuracy and detection efficiency at the same time, especially in the detection of chemical equipment For large components such as rail passenger car body and medical equipment, the detection efficiency is low, so its application in industry is greatly limited

In addition, in order to meet the detection of large components, the two-dimensional scanning platform needs to be made large enough, resulting in a complex and heavy detection device that is not suitable for carrying, which further limits its application

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