High-energy pulse laser processing and measuring integrated system and method

Abstract

The invention discloses a high-energy pulse laser processing and measuring integrated system and a method. The high-energy pulse laser processing and measuring integrated system comprises a set of high-energy pulse laser system which can be used for laser shock peening and ultrasonic wave generation at the same time, a set of sensor system which is used for receiving ultrasonic waves, a set of data reading system which is used for converting sensor data, and a set of central control system is used for coordinately controlling all equipment; high-energy pulse laser generated by the high-energypulse laser system induces and generates shock wave laser shock peening on the surface of a workpiece according to a path, the ultrasonic waves are generated in the interior of the workpiece; the sensor system receives an ultrasonic signal and inputs the ultrasonic signal to the central control system through the data reading system; the central control system carries out calculation on the ultrasonic data to obtain internal information of the workpiece and laser shock information; and real-time parameter adjustment are carried out on the high-energy pulse laser and workpiece product manufacturing equipment according to the laser shock information and the internal information of the workpiece. According to the high-energy pulse laser processing and measuring integrated system and the method, shock peening and ultrasonic detection are achieved at the same time, and the detection accuracy is improved.

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 ...

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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

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