An integrated system and method for high-energy pulse laser processing and measurement

Abstract

An integrated system and method for high-energy pulse laser processing and measurement, including a high-energy pulse laser system that can be used for laser shock strengthening and ultrasonic generation at the same time, a sensor system for receiving ultrasonic waves, and a data reader system for converting sensor data. output system, a central control system for coordinated control of all equipment; the high-energy pulse laser generated by the high-energy pulse laser system induces shock waves on the surface of the workpiece according to the path; laser shock strengthening, and generates ultrasonic waves inside the workpiece; the sensor system receives the ultrasonic signal and passes The data readout system is input to the central control system; the central control system calculates the ultrasonic data to obtain the internal information of the workpiece and the laser shock information; according to the laser shock information and the internal information of the workpiece, the high-energy pulse laser and workpiece product manufacturing equipment are adjusted in real time; The invention realizes impact strengthening and ultrasonic detection at the same time, and improves detection accuracy.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring, in particular to an integrated system and method for high-energy pulse laser processing and measurement. Background technique [0002] Laser Ultrasonic (Laser Ultrasonic, LU) is a non-destructive testing method developed in recent years. Pulsed lasers are used to induce ultrasonic waves in the target to be tested, and then receive ultrasonic signals through corresponding contact or non-contact ultrasonic detection sensors. Using the corresponding algorithm to analyze the collected data, the information such as the modulus, grain size, internal stress and pore crack of the target to be tested can be obtained. [0003] Laser shock peening is a high-performance surface treatment technology that uses a high-energy pulsed laser beam to induce high-energy plasma on the surface to be treated, and through the high-speed diffusion of the plasma, an impact force of GPa level is generated on the ...

AI Technical Summary

Problems solved by technology

However, in laser ultrasonic testing, in order to avoid the impact of the pulsed laser on the workpiece to be tested, a lower energy laser (generally tens of mJ) is generally used. The lower energy will limit the intensity of ultrasonic waves and affect the accuracy of detection. At the same time, the actual impact effect of the laser shock peening process is also affected by the laser energy distribution, the surface quality of the part, the properties of the absorbing layer and the constrained layer, and the overlap rate of the spot, but there is still no effective monitoring method

Images