Laser precise cleaning method and system for surface of composite material

By using a laser precision cleaning system to monitor and provide feedback in real time, the system identifies the material composition on the surface of composite materials and adjusts the laser parameters, thus solving the problems of matrix damage and parameter adaptability in composite material cleaning and achieving non-destructive precision cleaning.

CN122142025APending Publication Date: 2026-06-05NANCHANG HANGKONG UNIVERSITY
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Patent Information

Application Number
CN202610312653.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-16
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing laser cleaning technologies struggle to precisely control laser energy input when processing composite materials, which can easily lead to matrix damage. Furthermore, the process parameter library has poor adaptability and cannot accommodate dynamic, individual differences in the cleaning process.

Method used

A laser precision cleaning system is adopted, which combines CCD vision sensor and plasma spectroscopy sensor for real-time monitoring. The central processing controller identifies the material composition and adjusts the laser parameters to achieve selective cleaning of the composite material surface.

Benefits of technology

It achieves non-destructive and precise cleaning of composite material surfaces, avoids thermomechanical damage, adapts to coatings of different thicknesses and aging levels, and is suitable for composite material maintenance in aerospace, high-end sports equipment and other fields.

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Abstract

The invention provides a precise laser cleaning method and system for the surface of a composite material, and the system comprises a laser generation unit, a light beam scanning and focusing unit, a real-time monitoring and feedback unit and a central processing controller. The light beam scanning and focusing unit is used for controlling a laser beam to scan on the surface of a workpiece, the real-time monitoring and feedback unit comprises a CCD visual sensor and a plasma spectrum sensor, and the CCD visual sensor is used for collecting image information of a cleaning area; the plasma spectrum sensor is used for analyzing a characteristic spectrum generated by a plasma excitation substance, and the central processing controller is used for receiving a plasma spectrum and image information and sending a laser parameter adjusting instruction. According to the method, the material composition change of the cleaning interface can be recognized in real time, selective and lossless cleaning of the surface coating is achieved, and thermal damage and mechanical damage to the composite material matrix are effectively avoided.
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