UHTC for Sharp Leading EdgesUltrahigh temperature ceramics have performed unreliably due to material flaws and attachment design. These deficiencies are brought to the fore by the low fracture toughness and thermal shock resistance of UHTCs. If these deficiencies are overcome, we are still faced with poor oxidation resistance as a limitation on UHTC applicability to reusable launch vehicles. We have been addressing the deficiencies of UHTCs for the past year via a small task at GRC that is part of the 3rd Gen TPS effort. Our focus is on composite constructions and functional grading to address the mechanical issues and on composition modification to address the oxidation issue. The approaches and progress will be reported.
Document ID
20050212111
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Levine, Stanley R. (NASA Glenn Research Center Cleveland, OH, United States)
Singh, Mrityunjay (QSS Group, Inc. Cleveland, OH, United States)
Opila, Elizabeth J. (Cleveland State Univ. Cleveland, OH, United States)
Date Acquired
August 29, 2013
Publication Date
January 1, 2003
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: 27th Annual Conference on Composites, Materials and Structures