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Full-Text Articles in Mechanical Engineering
Micro-Raman Investigation Of Residual Stresses In Sic/Sic Composites, Kaitlin Kollins
Micro-Raman Investigation Of Residual Stresses In Sic/Sic Composites, Kaitlin Kollins
The University Honors Program
Ceramic Matrix Composites (CMCs) are being developed for use in extreme operating conditions. Specifically, there is interest to replace superalloys with Silicon-Carbide/Silicon-Carbide (SiC/SiC) CMCs in the hot section of gas turbine engines because of their lower densities, high temperature performance, and oxidation resistance. Due to the high temperature processing conditions of SiC/SiC CMCs, there are thermal residual stresses inherent to the material. This study focused on using micro-Raman Spectroscopy on as manufactured SiC/SiC CMCs to measure and investigate the residual stresses within a fiber and the matrix material. Following the silicon Raman active mode at 520 cm-1 and the SiC …