Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Plasma spray process"”.
-
Development of a Plasma Spray Process Monitoring System through Aeroacoustic Signal Analysis
Plasma spray coatings are vital to the capabilities of jet engines. They allow engines to operate at combustion temperatures that would otherwise melt the superalloy components. Coatings tighten clearance between rotating components, increasing engine compression. They prevent chemical attack and …
-
Optimal Parameters for Doubly Curved Sandwich Shells, Composite Laminates, and Atmospheric Plasma Spray Process
Optimization is a decision making process to solve problems in a number of fields including engineering mechanics. Bio-inspired optimization algorithms, including genetic algorithm (GA), have been studied for many years. There is a large literature on applying the GA to mechanics problems. However, …
-
Adaptive Process Control for Achieving Consistent Mean Particles' States in Atmospheric Plasma Spray Process
The coatings produced by an atmospheric plasma spray process (APSP) must be of uniform quality. However, the complexity of the process and the random introduction of noise variables such as fluctuations in the powder injection rate and the arc voltage make it difficult to control the coating …
-
Study of microstructure effect on the thermal properties of Yttria-stabilized-Zirconia thermal barrier coatings made by atmospheric plasma spray and pressing machine
… set of samples was fabricated by Atmospheric Plasma Spray process for two different microstructure configurations, standard (STD) and vertically cracked (VC), and two different thicknesses, 400 and 700 micron respectively. A laser flash system was used to measure the thermal properties of the …
-
Synergistic Modeling of Advanced Manufacturing Processes with Functional Variables
… functional variables can represent the in situ process conditions and rich product performance information, and are widely encountered in various manufacturing processes. In this dissertation, I will focus on modeling of manufacturing processes with in situ process (functional) variables, and …
-
Microstructures and oxidation properties in hafnium-tantalum-nitride ceramics
… sets of hafnium nitride diffusion couples were processed by hot-isostatic pressing and their resulting microstructure and phase orientation were identified. Distinct regions were found in the diffusion couples. It was shown that the rhombohedral ζ-Hf_4 N_3 phase, like other M_4 X_3 UHTCs, formed …