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Showing 1 to 4 of 4 for “"Piezospectroscopy"”.
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Nanocomposite Coating Mechanics via Piezospectroscopy
Coatings utilizing the piezospectroscopic (PS) effect of alpha alumina could enable on the fly stress sensing for structural health monitoring applications. While the PS effect has been historically utilized in several applications, here by distributing the photo-luminescent material in …
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Synchrotron X-Ray Diffraction and Piezospectroscopy used for the Investigation of Individual Mechanical Effects from Environmental Contaminants and Oxide Layer Undulations in Thermal Barrier Coatings
<p>The durability of Thermal Barrier Coatings (TBCs) used on the turbine blades of aircraft and power generation engines has been known to be affected by sand particle ingression comprised of Calcium-Magnesium-Alumina-Silicate (CMAS). Previous studies have shown that these effects present …
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Nondestructive Evaluation of Engine Run Turbine Blades Using Laser Ablation and Photoluminesence Stress Measurements
… method used involves performing photoluminesent piezospectroscopy (PLPS) to collect R1 and R2 peaks from Cr<sup>+3</sup> within the alumina of an underlying thermally grown oxidation (TGO) layer of the TBC system. Strains in this Cr<sup>+3</sup> doped alumina shift the peaks, which can then be …
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ZrB2-SiC Based Ultra High Temperature Ceramic Composites: Mechanical Performance and Measurement and Design of Thermal Residual Stresses for Hypersonic Vehicle Applications
Ultra-high temperature ceramics (UHTCs), such as ZrB2-based ceramic composites, have been identified as next generation candidate materials for leading edges and nose cones in hypersonic air breathing vehicles. Mechanical performance of ceramic composites play an important role in the ultra-high …