An online identification method for pyrolysis and ablation interface evolution of carbonized ablation material based on X-ray image fusion enhancement

By using X-ray image fusion enhancement technology, the problems of accuracy and versatility in measuring the pyrolysis and ablation interface of carbonized ablation materials in traditional ground thermal assessments have been solved, and automatic identification and accurate calculation of the pyrolysis and ablation interface of carbonized ablation materials have been achieved.

CN122385651APending Publication Date: 2026-07-14XI AN JIAOTONG UNIV
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Patent Information

Application Number
CN202610506188.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-16
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional ground-based thermal testing methods for measuring the pyrolysis and ablation interfaces of carbonized and ablated materials suffer from insufficient accuracy and versatility. Existing equipment has limited high-temperature resistance, and the imaging quality is affected by interference from the test fixtures, making it difficult to accurately identify the interfaces within the material.

Method used

An X-ray image fusion enhancement method is adopted. By adjusting the position of the X-ray emitter and detector, pre-shooting and real-time image processing are performed. Gray-scale stretching and image fusion techniques are used to generate saturated pre-processed images. Gray-scale gradient values ​​are calculated to identify interfaces, thereby achieving automatic identification of pyrolysis and ablation interfaces.

Benefits of technology

It enables in-situ continuous measurement of the pyrolysis and ablation interface during ground thermal testing of carbonized ablation materials, improving the accuracy of measurement technology and imaging quality, and overcoming the limitations of traditional methods.

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Abstract

The application discloses an online identification method for pyrolysis and ablation interface evolution of carbonized ablation material based on X-ray image fusion enhancement. In the ground thermal test of the carbonized ablation material, a plurality of groups of images of the carbonized ablation material at different moments are obtained through X-ray imaging, an image fusion enhancement algorithm is adopted to improve the image quality, the local features of the pyrolysis and ablation interface are enhanced, the image noise is reduced through local sliding window averaging, and the pyrolysis and ablation interface is identified in real time based on a gradient algorithm. The application can realize real-time automatic measurement of the ablation amount, the interface between the pyrolysis layer and the carbonization layer, and the interface between the pyrolysis layer and the original layer in the ground thermal test of the carbonized ablation material, overcome the problems that the traditional measurement method is difficult to identify the interface between the pyrolysis layer and has low accuracy, and improve the measurement technical level of the ground thermal test of the thermal protection material, thereby providing support for the design of the ablation thermal protection system.
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