Brittleness and composite structure combustion characteristics and crack multidimensional detection system and method

By combining spectral image recognition and X-ray detection devices, the shortcomings in the assessment of structural changes of composite materials during fire are solved, accurate assessment of the combustion performance and safety of composite materials is achieved, and engineering design is optimized.

CN120427827BActive Publication Date: 2025-10-10UNIV OF SCI & TECH OF CHINA
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Patent Information

Application Number
CN202510934618.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-08
Publication Date
2025-10-10
Estimated Expiration
2045-07-08

AI Technical Summary

Technical Problem

Existing methods and devices for evaluating the combustion performance of materials ignore the impact of structural changes in composite materials during fire, especially the brittleness and cracking and delamination of composite structural materials, resulting in the inability to accurately evaluate their combustion performance and safety.

Method used

A spectral image recognition device is used to photograph surface cracks from the fire-facing side, and an X-ray detection device is used to photograph internal cracks from the side. A three-dimensional structural detection system is constructed. Fire conditions are simulated by a radiant heat source, and the combined effect of external heat sources and structural changes is comprehensively considered to achieve three-dimensional crack information measurement of composite materials.

Benefits of technology

It can accurately observe the surface and internal crack changes of composite materials, improve the accuracy of fire safety assessment, optimize engineering design, and provide a comprehensive analysis of combustion performance.

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Abstract

The present application provides a kind of brittle and composite structure combustion characteristic and crack multidimensional detection system and method, belong to material fire performance evaluation and nondestructive detection technical field.The system includes sample table component, for placing to be measured composite structure;Radiation heat source component, for the heat radiation of the fire face of to be measured composite structure;Three-dimensional structure detection component, including: spectral image recognition device, for the surface crack of to be measured composite structure in the process of burning is photographed, obtains first image data;And X-ray detection device, for the internal crack of to be measured composite structure in the process of burning is photographed, obtains second image data;Protective cabin, for installing sample table component, radiation heat source component, three-dimensional structure detection component in interior, and the X-ray from X-ray detection device is shielded;And console component, for first image data and second image data are analyzed, obtains three-dimensional crack information.
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