Method for detecting accumulated water damage of honeycomb sandwich composite material

Abstract

The invention relates to a honeycomb sandwich composite material water accumulation damage detection method. The method comprises the steps: manufacturing a honeycomb sandwich composite material water accumulation damage detection standard comparison sample, which comprises a side wall plate, a honeycomb core and a glue film for bonding the side wall plate and the honeycomb core; injecting water with different heights into a plurality of groups of ponding volume detection standard comparison core grids on the honeycomb core, and injecting water into a plurality of core grids of ponding area detection standard comparison areas containing different numbers of adjacent core grids; detecting each group of accumulated water volume detection standard comparison core grids and accumulated water area detection standard comparison areas by using a nondestructive detection device, and setting detection parameters, so the images of each group of accumulated water volume detection standard comparison core grids and accumulated water area detection standard comparison areas are clear; detecting the honeycomb sandwich composite material by using a nondestructive detection device, and comparing the detected image with the images of each group of accumulated water volume detection standard comparison core grids and the accumulated water area detection standard comparison areas thereof to obtain the accumulated water damage degree of the honeycomb sandwich composite material.

Description

technical field [0001] The application belongs to the technical field of water-damage detection of honeycomb sandwich composite materials, and in particular relates to a water-damage detection method of honeycomb sandwich composite materials. Background technique [0002] The honeycomb sandwich composite material is composed of two opposite side wall panels and a honeycomb core between the two side wall panels. The honeycomb core and the two side wall panels are bonded by an adhesive film. Its composition is as follows: figure 1 shown. [0003] The honeycomb sandwich composite material has the advantages of light weight, high strength, and good wave permeability, and is widely used in aerospace, ships, trains and other structures. Since the honeycomb core is a hollow structure, in the actual use process, the environment The moisture in the honeycomb core can enter the cell of the honeycomb core from the damaged part or the gap of the side wall plate. When the area or volume...

AI Technical Summary

Problems solved by technology

[0005] In order to avoid damage to the honeycomb sandwich composite material, at present, most of the non-destructive testing of the honeycomb sandwich composite material is based on ultrasonic detector or infrared thermal imager or X-ray photography technology, based on ultrasonic detector or infrared thermal imager or X-ray When radiographic technology is used to detect water accumulation damage on honeycomb sandwich

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