Marking System for Ceramic Matrix Composites

Physical Sciences Inc. (PSI) proposes a method for marking for ceramic matrix composite (CMC) components. The method utilizes ceramic phosphors embedded within the top ply of a fabric reinforced material. The method enables high resolution markings to be written directly into components during early stage manufacturing. The optically activated phosphors can be read by production line and field personnel using a commercially available radiation source and will not degrade as a result of composite manufacturing practices or anticipated operating environments. During Phase I PSI will demonstrate the ability of the method to mark CMCs with high resolution markings and show that the markings are readable after CMC processing. Further, we will show that the marking method is robust to the anticipated operation environment and does not reduce the mechanical strength of the composite compared to the as-fabricated, unmarked material.