Damage positioning method in composite material detection and maintenance

Abstract

The invention belongs to the technical field of damage detection and structural maintenance, and particularly relates to a damage positioning method in composite material detection and maintenance. The damage obtained by nondestructive testing of the composite material can be rapidly and effectively positioned in the three-dimensional digital model, and rapid identification of the damage position, damage evaluation and maintenance record query in the later period can be facilitated. The method for acquiring the damage by photographing and nondestructive testing equipment is relatively simple and easy to operate and implement, information in a picture is extracted in combination with an image recognition mode, damage position coordinate information and damage size information are acquired, and automatic damage modeling is realized, so that the damage can be efficiently and accurately positioned; damage information is put into three-dimensional digital-analog information, so that rapid extraction of damage and query of later maintenance records can be realized.

Description

technical field [0001] The invention belongs to the technical field of damage detection and structure maintenance, and in particular relates to a damage location method in composite material detection and maintenance. Background technique [0002] The damage of modern civil aircraft is mainly divided into accidental damage, environmental damage and fatigue damage. For composite materials, it mainly includes accidental damage and environmental damage, and its damage forms mainly include delamination, debonding and impact damage. The emergence of damage poses a threat to the safe flight of the aircraft. Different types of damage appear in different structural parts and have different effects on the aircraft. Therefore, it is necessary to accurately detect and locate the damage, and then realize the evaluation to ensure the safety of the aircraft. safe flight. [0003] For the damaged part of the aircraft composite structure, in order to assess the damage quickly and efficien...

AI Technical Summary

Problems solved by technology

On the one hand, this kind of modeling needs to sort out and effectively identify the damage location and information. Damage modeling is cumbersome. On the other hand, manual input may cause some errors, which brings certain difficulties to the rapid and accurate location of damage.

When there is damage that needs to be repaired, the location information and status information of the damage are retrieved from the previous historical maintenance records. The efficiency of damage location is low and errors are prone to occur, which is not conducive to the rapid formulation of later maintenance plans.

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