Jin Gao, Xiaodong He, Haolong Fan, Guangping Song, Xiaocan Zou, Yongting Zheng, Yuelei Bai
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引用次数: 0
Abstract
To understand the effect of processing and prefabricated pores on 2D woven SiCf/SiC composites (2DW-SiCf/SiC), their crack propagation and mechanical response under tension load at meso- and macro- scale are investigated by a promising elastoplastic phase field method (EPPFM). Of much interest, the computational results are well consistent with the available experimental results, verifying the reliability of EPPFM. A significant dependence on pores is observed in the relationship between the strength, Young's modulus, work of fracture of 2DW-SiCf/SiC and porosity when pores exist solely in the matrix out of yarns, and both in the matrix and yarns, respectively. Moreover, the more dangerous processing pores at mesoscale near yarn are attributed to the inconsistent deformation of the yarn and matrix. Finally, the EPPFM is used for the effect of geometry size on the joint failure mode of 2DW-SiCf/SiC plate with prefabricated open holes under pin-loading. Of importance, the more safe bearing failure mode occurs in 2DW-SiCf/SiC plate when edge distance-to-hole diameter ratio and width-to-hole diameter ratio are greater than 1.5 and 3, respectively.
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The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
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Materials design, selection, synthesis and processing methods[...]
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Mechanisms, Theory, Modeling, and Simulation[...]
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