Arc-jet testing of ultra-high-temperature-ceramics

Earth and Space 2014

“…As mentioned earlier, Savino et al (2010aSavino et al ( , 2010b and Monteverde et al (2010) performed a CFD analysis and provided temperature and heat flux distributions on the cone surface. In this study the above thermal surface condition will be used in the FE analysis to obtain the temperature distribution and the thermal stress distribution in the cone specimen accounting for the oxidation and pore effects.…”

“…The oxidation of ZrB 2 -SiC ceramic at high temperature results in two new products, solid ZrO 2 and liquid SiO 2 , Opeka et al (2004, Carney et al (2009), andRezaie et al (2007). Savino et al (2010aSavino et al ( , 2010b and Monteverde et al (2010) conducted arc-jet tests on three models of zirconium diboride and silicon carbide ceramics (ZrB 2 -20vol%SiC) with different geometries including a rounded wedge, a small hemisphere and a cone with a small nose radius. Figure 1 shows a schematic of the cone sample used in the above study.…”

“…The distribution of the surface temperature and surface heat flux along the slant height, s, were predicted. Savino et al (2010aSavino et al ( , 2010b and Monteverde et al (2010) carried out a microstructural analysis to observe the features of the oxidized layers such as external glassy layer (SiO 2 ), zirconia sub-layer (ZrO 2 ) and SiC-depleted diboride layer (ZrB 2 ). Fig.…”

“…Fig. 1 A schematic of the cone sample used in experimental studies (Savino et al (2010a(Savino et al ( , 2010b and Monteverde et al (2010)). …”

“…A steady-state heat transfer FE analysis was employed to conduct the thermal analysis to obtain the temperature distribution in the inner body of the cone using surface thermal conditions presented by Savino et al (2010aSavino et al ( , 2010b and Monteverde et al (2010). The resulting temperature distribution in the inner body of the cone is then applied to a FE thermomechanical analysis to calculate the thermal stress distribution.…”