Mechanical properties and mechanical behavior of (SiO2)f/SiO2 composites with 3D six-directional braided quartz fiber preform

• DOI: 10.1515/secm-2011-0134
• Publication Date: 2012-06-08T15:27:01Z
• Authors: Yong Liu; Zhaofeng Chen; Jianxun Zhu; Yun Jiang; Binbin Li
• Keywords: Volume fraction

Abstract (SiO 2 ) f /SiO composites reinforced with three-dimensional (3D) six-directional preform were fabricated by the silicasol-infiltration-sintering method. The nominal fiber volume fraction was 47%. To characterize mechanical properties of composites, testing carried out under various loading conditions, including tensile, flexural, and shear loading. composite exhibited highly nonlinear stress-strain behavior all three types results indicated that 3D braided superior flexural good resistant as compared other (2.5D four-directional)-reinforced composites. graceful failure addition 5th 6th yarns resulted in controlled fracture hence these could possibly be suitable for thermal structure components.