Journal of Inorganic Materials, Volume. 39, Issue 12, 1367(2024)
Figures & Tables(14)
7. Debonding and step spacing evolution at 2D SiCf/SiC shear interface
Table 1. Parameter value statistics
View tableView in ArticleTable 1. Parameter value statistics
Parameter Symbol Value Poisson’s ration of SiC fiber vf 0.20 Poisson’s ration of SiC matrix vm 0.17 Fiber volume fraction Vf/% 0.35 Matrix cracking energy ${{\Gamma }_{\text{m}}}~$/(N·m-1) 6.0 Interface sliding stress ${{\tau }_{\text{s}}}$/MPa 9.2 Thickness of plain woven layer ${{t}_{\text{layer}}}$/mm 0.2 SiC fiber diameter ${{d}_{\text{f}}}$/μm 12.0 SiC fiber modulus ${{E}_{\text{f}}}$/GPa 386.7 SiC matrix modulus ${{E}_{\text{m}}}$/GPa 350.0 SiC fiber shear modulus ${{G}_{\text{f}}}/$GPa 161.1 SiC matrix shear modulus ${{G}_{\text{m}}}$/GPa 149.6 BN interface shear modulus ${{G}_{\text{I}}}$/GPa 110.0
Table 2. Comparison of theoretical and actual values for shear modulus calculation
View tableView in ArticleTable 2. Comparison of theoretical and actual values for shear modulus calculation
Thermal shock cycles Percentage of debonding/ % Theoretical value/ GPa Actual value/ GPa Error/ % 0 0 80.4 78.5 -2.4 250 5.56 78.2 83.6 6.9 500 13.90 74.6 58.6 -21.4 750 56.10 50.0 63.6 27.2
Table 3. Comparison of theoretical and actual shear strength values
View tableView in ArticleTable 3. Comparison of theoretical and actual shear strength values
Thermal shock cycles Fiber step spacing/ mm Theoretical value/ MPa Actual value/ MPa Error/ % 0 79.0 178.6 205.8 15.2 250 97.5 193.4 209.6 8.4 500 49.0 162.6 186.5 14.7 750 67.3 170.8 187.3 9.7
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Bojie YOU, Bo LI, Xuqin LI, Xuehan MA, Yi ZHANG, Laifei CHENG.
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Received: Jun. 4, 2024
Accepted: --
Published Online: Jan. 21, 2025
The Author Email: ZHANG Yi (zhangyit@nwpu.edu.cn)
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