Deep Learning-based Damage Identification and Evaluation of 2.5D Ceramic Matrix Composites

被引：0
|
作者：
Feng Y. [1 ]
Zhang Y. [2 ]
Zhang D. [1 ]
Guo W. [1 ]
Hou Y. [1 ]
Li B. [3 ]
机构：
[1] School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai
[2] Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an
[3] The Sixth Military Representative Office of the Rocket Force Equipment Department in Xi'an, Xi'an
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2021年 / 49卷 / 08期
关键词：
Ceramics; Composites; Damage identification; Deep learning; Evaluation; Image segmentation; Silicon carbonate;
D O I：
10.14062/j.issn.0454-5648.20200829
中图分类号：
学科分类号：
摘要：
The X-ray CT in-situ tensile test of 2.5D-SiCf/SiC composites was conducted to reveal the damage evolution and failure mechanism of the ceramic matrix composites. The CT data of the materials during the loading process and failure fracture were obtained. A deep learning-based image segmentation method was used to propose a three-dimensional visualization model of the internal damage of the composites, and the number, volume, spatial distribution and spatial angle of the microcracks generated due to the stretching were analyzed. At high loads, the tensile microcrack volumes are 0-5.3×10-4 mm³, the fracture microcrack volumes are 0-2.2×10-4 mm3, and the proportion of the microcracks with spatial angles of about 0° and 45° is relatively high. Meanwhile, the microcracks are closely correlated to the pore distribution. According to the results by fracture damage analysis, the tensile damage process of 2.5D-SiCf/SiC composites includes matrix cracking, fiber fracture, fiber pull-out and interface debonding. The fiber pull-out lengths are in the range of 16.02-250.32 μm, and the average length is 88.26 μm. It is indicated that the image segmentation method based on deep learning could offer an effective way to reveal the mechanism of material damages and evaluate the degree of the damages. © 2021, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：1765 / 1775
页数：10
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