Apparatus and method for removing damaged areas of fiber-reinforced composite materials

Abstract

The invention discloses a device and a method for removing a damage region of fiber reinforced composite materials. According to the method, infrared nanosecond laser is used for carrying out delamination removal on the damaged region of the fiber reinforced composite materials, the minimum delamination thickness can reach 0.5mm, and the preparation is made for patch pasting. The delamination pasting is used, the combining surface area can be increased, and further, the patching intensity of the reinforced composite materials is enhanced. The method comprises the concrete process that the infrared nanosecond pulse laser is used for focusing the laser beam into line focusing light spots with the width being 0.1mm to 1mm and the length being 10 to 30mm through an optical focusing system, the energy threshold value of the materials is reached, the fast scanning is realized through a high-speed precision three-axle moving platform, and the highest speed can reach 10cm / s, so that the goal of precise delamination removal of the damage region of the fiber composite materials is achieved, and finally, the restoration of the fiber reinforced composite materials is realized. The device and the method have the advantages that the delamination removal is realized, no fiber is pulled out, the automation degree is high, the daily maintenance is simple, the environment is protected, convenience and high speed are realized, and the like. The device and the method can be applied to the composite material restoration process of air planes, automobiles and wind power generating equipment.

Description

technical field [0001] The invention relates to the technical fields of laser composite material processing and repair, and in particular to a method for layered removal of materials in damaged areas during the repair process of fiber-reinforced composite materials, including glass fiber composite materials and carbon fiber composite materials. Background technique [0002] In recent years, the global high-performance fiber and composite material industry has developed vigorously. The total output value of the entire industry has exceeded 300 billion US dollars and has maintained a strong growth rate of 5-8% per year. It is becoming the strategic backbone supporting the rapid development of the global economy. It is especially widely used in aircraft fuselage, composite material body, wind turbine blades and equipment, and has the advantages of light weight, high strength, and integrated forming. While fiber-reinforced composite materials are widely used, the repair problem ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a device and method for removing damaged areas of fiber-reinforced composite materials, so as to overcome the problems of fiber pull-out, new micro-cracks, unstable processing quality, low precision and difficulty in separating existing in traditional mechanical removal methods. In order to solve the shortcomings of layer processing and other shortcomings, the high-frequency infrared nanosecond pulse laser is used to remove the damaged area of ​​fiber reinforced composite materials layer by layer, so that the whole process has the characteristics of high efficiency and high precision removal, so that the final repair of fiber reinforced composite materials

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