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A method for preparing composite laminates with pre-embedded delamination defects

A technology for composite material layers and delamination defects, which is applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems that cannot completely replace delamination defects, and achieve the effect of rapid and accurate preparation

Active Publication Date: 2021-01-26
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of fillers, the delamination defects prepared by this method cannot completely replace the real delamination defects of composite laminates during use.

Method used

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  • A method for preparing composite laminates with pre-embedded delamination defects
  • A method for preparing composite laminates with pre-embedded delamination defects
  • A method for preparing composite laminates with pre-embedded delamination defects

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Embodiment Construction

[0029] The core of the present invention is to provide a method for preparing embedded delamination defects of composite material laminates, which can rapidly and accurately prepare more realistic pre-embedded delamination defects of laminates in different positions and sizes.

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] A kind of method that the present application provides to prepare the embedded delamination defect of laminated board of composite material is as follows: figure 1 as shown, fi...

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Abstract

The invention discloses a method for preparing a pre-buried layered defect of a composite material laminated plate. The method comprises the following steps that parameters of a laser are determined according to the thickness of the composite material laminated plate and the position of the pre-buried layered defect; the position, the length and the width of black absorbing layers are determined according to the position, the length and the width of the pre-buried layered defect, and the black absorbing layers are pasted on the corresponding positions of the two surfaces of the composite material laminated plate; and transparent restraining layers are arranged on the surfaces of the black absorbing layers, the two surfaces of the composite material laminated plate are subjected to impact in sequence by utilizing the laser with the parameters until the impact on a required impact area is completed. According to the method for preparing the pre-buried layered defect of the composite material laminated plate, more real laminated plate pre-burying layering defects of different positions and different sizes can be rapidly and accurately prepared.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a method for preparing pre-embedded delamination defects of composite material laminated boards. Background technique [0002] Composite materials have been widely used in aerospace, automotive and medical fields due to their superior performance. Among them, fiber-reinforced resin-based composite laminates have been widely used in aircraft skins, grilles, and ribs on wing surfaces. boards and other components. Due to the inconsistency of the laying direction of the reinforcing fibers often leads to the mismatch of the stiffness between the layers, resulting in higher interlayer stress, and the main transmission medium of the interlayer stress is the weaker resin matrix, so for composite laminates, delamination is It is the main damage form and delamination often exists inside the structure. After the composite laminate is subjected to alternat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00
CPCB23K26/00
Inventor 张永康张冲金捷范中岚陈玲玉
Owner GUANGDONG UNIV OF TECH
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