In-Situ X-Ray CT Characterization of Damage Mechanism of Plain Weave SiCf/SiC Composites Under Compression

doi:10.16183/j.cnki.jsjtu.2022.322

Abstract

Abstract:

In order to reveal the damage evolution and failure mechanism of ceramic matrix composites (CMCs), in-situ X-ray CT compression tests of plain weave SiC_f/SiC composites were conducted, and the CT data during loading and after failure were obtained. Displacement and strain distributions of the material were evaluated by the digital volume correlation (DVC) technology. The three-dimensional visual model of the composite was created by using image processing software. The spatial distributions of tow split and other damages were segmented by the deep learning algorithm. The qualitative and quantitative analysis of compression damage evolution were performed. The results show that there is a relatively large expansion induced by barreling in the thickness direction and a little shrinkage in the width direction during the unidirectional compression, while the barreling in the thickness direction is the main reason to trigger compressive damages of the material. Damages such as matrix falling-off at surface, tow split, delamination, will occur as the compression was approaching the ultimate load. Fiber kinking results in the final compressive failure of the material, while an obvious V-shaped shear band is observed in the fracture. The analysis of compressive damage evolution of plain weave SiC_f/SiC shows that the DVC technology and deep learning-based image segmentation methods could effectively reveal the compressive damage evolution mechanism of ceramic matrix composites.

Key words: ceramic matrix composites (CMCs), silicon carbide, deep learning, image segmentation, digital volume correlation (DVC) technology

CLC Number:

O341

CHENG Xiangwei, ZHANG Daxu, DU Yonglong, GUO Hongbao, HONG Zhiliang. In-Situ X-Ray CT Characterization of Damage Mechanism of Plain Weave SiC_f/SiC Composites Under Compression[J]. Journal of Shanghai Jiao Tong University, 2024, 58(2): 232-241.

Figures/Tables 19

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

Fig.12

Fig.13

Fig.14

Fig.15

Fig.16

Fig.17

Fig.18

Fig.19

References 16

[1]	何新波, 杨辉, 张长瑞, 等. 连续纤维增强陶瓷基复合材料概述[J]. 材料科学与工程, 2002, 20(2): 273-278.
	HE Xinbo, YANG Hui, ZHANG Changrui, et al. Review of continuous fiber reinforced ceramic matrix composites[J]. Materials Science & Engineering, 2002, 20(2): 273-278.
[2]	WAN F, LIU R J, WANG Y F, et al. In situ observation of compression damage in a 3D needled-punched carbon fiber-silicon carbide ceramic matrix composite[J]. Composite Structures, 2019, 210: 189-201. doi: 10.1016/j.compstruct.2018.11.041 URL
[3]	WAN F, ZHAO S X, LIU R J, et al. In-situ observation of compression damage in a 3D braided carbon fiber reinforced carbon and silicon carbide (C/C-SiC) ceramic composite[J]. Microscopy and Microanalysis, 2018, 24(3): 227-237. doi: 10.1017/S1431927618000351 URL
[4]	CHATEAU C, GELEBART L, BORNERT M, et al. In situ X-ray microtomography characterization of damage in SiC_f/SiC minicomposites[J]. Composites Science and Technology, 2011, 71(6): 916-924. doi: 10.1016/j.compscitech.2011.02.008 URL
[5]	BALE H A, HABOUB A, MACDOWELL A A, et al. Real-time quantitative imaging of failure events in materials under load at temperatures above 1, 600 ℃[J]. Nature Materials, 2013, 12(1): 40-46. doi: 10.1038/nmat3497
[6]	WAN F, LIU R J, WANG Y F, et al. Damage development during flexural loading of a 5-directional braided C/C-SiC composite, characterized by X-ray tomography and digital volume correlation[J]. Ceramics International. 2019, 45(5): 5601-5612. doi: 10.1016/j.ceramint.2018.12.020 URL
[7]	SAUCEDO-MORA L, LOWE T, ZHAO S, et al. In situ observation of mechanical damage within a SiC-SiC ceramic matrix composite[J]. Journal of Nuclear Materials. 2016, 481: 13-23. doi: 10.1016/j.jnucmat.2016.09.007 URL
[8]	ZHANG D, LIU Y, LIU H, et al. Characterisation of damage evolution in plain weave SiC/SiC composites using in situ X-ray micro-computed tomography[J]. Composite Structures, 2021, 275(8): 114447. doi: 10.1016/j.compstruct.2021.114447 URL
[9]	刘海龙, 张大旭, 祁荷音, 等. 基于X射线CT原位试验的平纹SiC/SiC复合材料拉伸损伤演化[J]. 上海交通大学学报, 2020, 54(10): 1074-1083.
	LIU Hailong, ZHANG Daxu, QI Heyin, et al. Tensile damage evolution of plain weave SiC/SiC composites based on in-situ X-ray CT tests[J]. Journal of Shanghai Jiao Tong University, 2020, 54(10): 1074-1083.
[10]	阙权庆. C/SiC复合材料螺栓连接结构热力耦合及拉伸强度分析[D]. 哈尔滨: 哈尔滨工业大学, 2018.
	QUE Quanqing, The thermo-structural and tensile strength analysis of C/SiC composite bolted joints[D]. Harbin: Harbin Institute of Technology, 2018.
[11]	熊鑫. C/SiC复合材料弹簧的制备及其性能研究[D]. 长沙: 国防科学技术大学, 2011.
	XIONG Xin. Preparation and properties of C/SiC composite spring[D]. Changsha: National University of Defense Technology, 2011.
[12]	BADRAN A, MARSHALL D, LEGAULT Z, et al. Automated segmentation of computed tomography images of fiber-reinforced composites by deep learning[J]. Journal of Materials Science, 2020, 55(34): 1-17. doi: 10.1007/s10853-019-03876-z
[13]	杜永龙, 张毅, 王龙, 等. 基于深度学习的平纹C_f/SiC复合材料原位拉伸损伤演化与断裂分析[J]. 硅酸盐通报, 2022, 41(1): 249-257.
	DU Yonglong, ZHANG Yi, WANG Long, et al. In-situ tensile damage evolution and fracture analysis of plain weave C_f/SiC composites based on deep learning[J]. Bulletin of The Chinese Ceramic Society, 2022, 41(1): 249-257.
[14]	冯宇琦, 张毅, 张大旭, 等. 基于深度学习的2.5D陶瓷基复合材料损伤识别与评估[J]. 硅酸盐学报, 2021, 49(8): 1765-1775.
	FENG Yuqi, ZHANG Yi, ZHANG Daxu, et al. Deep learning-based damage identification and evaluation of 2.5D ceramic matrix composites[J]. Journal of the Chinese Ceramic Society, 2021, 49(8): 1765-1775.
[15]	FORSBERG F, MOOSER R, ARNOLD M, et al. 3D micro-scale deformations of wood in bending: Synchrotron radiation mu CT data analyzed with digital volume correlation[J]. Journal of Structural Biology, 2008, 164(3): 255-262. doi: 10.1016/j.jsb.2008.08.004 URL
[16]	万帆. 气相渗硅制备C/C-SiC复合材料的工艺、结构及力学损伤机理研究[D]. 长沙: 国防科技大学, 2019.
	WAN Fan. Investigation on the fabrication technology microstructure and mechanical damage mechanism of C/C-SiC composites fabricated by gaseous silicon infiltration[D]. Changsha: National University of Defense Technology, 2019.