Slurry cast HiPerComp

Thermal and mechanical properties of HiPerComp composites have been measiued at various stages during their development. Consequently the data presented here differs somewhat from previously published data summaries [1] since the material system and processing techniques have continued to evolve with time. The data presented here for Prepreg HiPerComp was mostly measured as part of the DOE-sponsored Continuous Fiber Ceramic Composites (CFCC) program on material fabricated in 2000 and 2001. Data for the Slurry Cast HiPerComp material was measured in 2003. Please note that this data is presented for informative purposes only, and should not be construed as, or used for, engineering specifications. 

Unless otherwise noted, all data presented for Prepreg HiPerCompT is for 8-ply laminates, with a balanced [0-90-90-0]s stacking of uniaxial plies, and nominally 22-25% by volume of Hi-Nicalon M fibers. Data for Slurry Cast HiPerComp is for 8-ply laminates made with 0-90,8 harness satin weave cloth and a nominal volume fraction of Hi-Nicalon fiber of 33-38%. Measurement of in-plane properties were generally done in one ofthe primary fiber directions. 

Some important thermal properties of Prepreg and Slurry Cast HiPerComp , measured at room temperature and at 1200°C, are listed in Table 1. Overall, the thermal properties... 

FIGURE 5. Thermal properties ofprepreg and slurry cast HiPerComp composites with Hi-Nicalon fibers. 

FIGURE 11. Photographs of inqjact damage in Slurry Cast (tcp) and Prepr (bottom) HiPerComp composites caused by 4mm chrome-steel projectiles fired at various velocities. The photographs show the back sides of the samples, which generally showed mote damage than the impact sides. 

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