Ultrasonic automatic flaw detection arm for high-curvature composites

Abstract

The invention discloses an ultrasonic automatic flaw detection arm for high-curvature composites. The ultrasonic automatic flaw detection arm comprises an ultrasonic probe portion, a magneto-rheological fluid damper, an encoder, a synchronous belt device, a supporting plate, a connecting shaft, a connecting disc, a probe driving servo motor, a supporting plate rotating servo motor and a control unit. The flaw detection arm is mounted on a flaw detection device with one or two sets of degrees of freedom in the X direction, the Y direction and the Z direction and can realize ultrasonic automatic flaw detection of the high-curvature composites by the aid of a measuring and controlling unit. The ultrasonic automatic flaw detection arm has the advantages of compact structure, high control precision, capability of realizing automatic flaw detection of the high-curvature composites and the like.

Description

technical field [0001] The invention relates to composite material ultrasonic automatic flaw detection, in particular to an ultrasonic automatic flaw detection arm for large curvature composite material. Background technique [0002] Since the use of ultrasonic waves to detect internal defects of metal objects in the 1930s, ultrasonic testing technology has developed rapidly in the industrial field. After adopting new technologies such as computer, microelectronics, sensing and image processing, ultrasonic testing technology occupies the most important position in the field of non-destructive testing due to its unique advantages and wide applicability. Aeronautical structural parts, etc.) is the most important method of non-destructive testing. [0003] Realizing automatic scanning imaging detection is a main method and technical approach for improving the reliability of ultrasonic detection at home and abroad. In recent years, the United Kingdom, the United States and oth...

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Problems solved by technology

[0006] With the development of the aviation industry, a large number of large-curvature composite materials have been widely used, but the current ultrasonic flaw detection system for composite materials can only detect parts with small curvature, and the ultrasonic automatic flaw detection equipment with large curvature radius has not been developed. The main reason is that the probe has a free attitude. The complex structure and large size on the degrees U and V cannot adapt to the automatic flaw detection of workpieces with large curvature radius. Structural form and control method, the development of ultrasonic automatic flaw detection arm for large curvature composite materials has important practical value

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