Five-axis laser ultrasonic automatic detection equipment and five-axis laser ultrasonic automatic detection method

Abstract

The invention discloses five-axis laser ultrasonic automatic detection equipment and a five-axis laser ultrasonic automatic detection method. The equipment comprises a five-axis motion platform, an industrial personal computer, a pulse excitation laser, a laser ultrasonic signal receiver and a control unit, wherein the excitation pulse laser, the laser ultrasonic signal receiver and the five-axismotion platform are connected with the industrial personal computer; the five-axis motion platform comprises a swing head with a z-axis direction translational degree of freedom, a y-axis direction translational degree of freedom and an x-axis direction rotational degree of freedom and a workbench with an x-axis direction translational degree of freedom and a z-axis direction rotational degree offreedom, the swing head is located above the workbench, the pulse excitation laser comprises a laser emitting head, and the laser emitting head is arranged on the swing head. Through coordination control of the swing head and the workbench, the laser three-dimensional scanning path and the irradiation direction are adjusted, efficient and rapid laser ultrasonic automatic detection can be achieved,and the laser ultrasonic detection efficiency and the detection precision can be greatly improved.

Description

technical field [0001] The invention belongs to the field of non-destructive testing, and in particular relates to a five-axis laser ultrasonic automatic testing device and method. Background technique [0002] Non-destructive testing is a method of evaluating structural integrity, continuity, and reliability without destroying the usability of the tested object. It is widely used in the testing of various engineering structural parts. Laser ultrasonic technology is a non-contact, high-precision, non-destructive ultrasonic non-destructive testing technology that uses pulsed laser beams to act on the object to be tested to generate thermoelastic effects and excite ultrasonic waves, and obtain ultrasonic signals based on the principle of optical interference. . Laser ultrasound combines the high precision of ultrasonic detection and the advantages of non-contact optical detection, and has the advantages of high sensitivity and high detection bandwidth at the nanometer level. ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the background technology, the purpose of the present invention is to provide a five-axis laser ultrasonic automatic detection equipment and method, which can realize complete automation of laser ultrasonic detection under the condition of low cost and high precision, and can detect large-sized and complex structure workpieces. And the detection process does not require manual intervention, which greatly improves the efficiency and accuracy of defect detection

Images