An efficient multi-scale model for needle-punched Cf/SiCm composite materials with experimental validation. (15th July 2021)

• Record Type: Journal Article
• Authors: Lim, Hyoung Jun; Choi, Hoil; Lee, Min Jung; Yun, Gun Jin
• Is Part Of: Composites. Number 217(2021)
• Publication Date: 2021-07-15
• Subjects: 3D needle-punched composites -- Ceramic matrix composites (CMC) -- Finite element method -- Multi-scale modeling -- Subcell modeling; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2021.108890
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: In this paper, we present a novel efficient multi-scale modeling methodology for three-dimensional (3D) needle-punched (NP) carbon/silicon carbide (NP Cf /SiCm ) with a complex microstructure. Variations of the material properties induced by the needle-punching process and complex geometrical features could pose challenges when estimating the material's behavior. A 3D microscopic high fidelity FE model is developed based on micro-CT images considering these composites' features. Novel and viable image processing techniques of micro-CT images are presented to generate the high fidelity model. The 3D high fidelity FE model is validated with the experimental test at room and high temperatures. A novel subcell modeling technique is developed for the 3D NP Cf /SiCm referring to the high fidelity FE model to expand to the macro-scale structural problem. The proposed models compare excellently with experimental results for mechanical behavior of tensile, shear, and bending under static loading conditions.