Riassunto
The Sixth Army Materials Technology Conference, IICeramics for High Performance Applications-II I-Reliabilityll , was co-sponsored by the Army Materials and Mechanics Research Center and the U. S. Department of Energy, Office of Transportation Programs . The program highlighted all issues relevant to the reliability of ceramics in advanced systems. The conference emphasized programmatic reviews of the major efforts on ceramic gas turbine technology, on an international basis. The conference showed how ceramic design, materials development, materials processing, NDE, and component systems testing are being integrated and iterated in specific engine development programs . Further , the conference promoted inter change among the various technical disciplines working in the advanced turbine and heat engine areas. This volume will join its earlier companions, Ceramics for High Performance A lications (1974), and Ceramics for High Performance Applications-II 1 7 ,in chronicling the rapid progress being made in the applicaton of ceramics to the very demanding service environ ment of gas turbine and piston engines. At the last meeting of this series at Newport, R t, in March 1977, successful high temperature tests of ceramic components in test rigs were described.
Contenuti
Keynote Address.- Recent Accomplishments and Research Needs in Structural Ceramics.- Session I Heat Engine Applications.- Overview of U.S. Department of Energy Ceramic Gas Turbine Program.- Overview of the German Ceramic Gas Turbine Program.- Ceramic Engine Research and Development in Sweden.- Research on the Use of Ceramics in Diesels.- Session I (Continued) Heat Engine Applications.- Ceramics Potential in Automotive Powerplants.- ARPA/NAVAIR Ceramic Gas Turbine Engine Demonstration Program.- Ceramic Applications in Turbine Engines.- Ceramics for Small Radial Inflow Power Generators.- Ceramics for Adiabatic Turbocompound Engine.- Ceramic Technology Requirements for 1425°C (2600°F) Uncooled Power Generation Application.- Stationary Ceramic Component Considerations for Advanced Industrial Turbines.- Session II Quality of Materials and Component Processing.- Sintered Silicon Carbide.- Processing Hot Pressed Silicon Nitride for Improved Reliability: HS-110 to NC-132.- Importance of Phase Equilibria on Process Control of Si3N4 Fabrication.- Injection Molding of Ceramics.- Reliability of Slip Cast Silicon Nitride Components.- Large Scale Production Test of Gas Turbine Components by Injection Molding.- Factors Influencing the Quality of Fully Dense Silicon Nitride.- Sintering of Silicon Nitride at Atmospheric Pressure.- Session III Design Concepts for Ceramics.- A Ceramic Turbine Rotor ― Its Design Evolution, Test Experience and Future.- Silicon Carbide Components for Diesel and Gasoline Engine Applications.- Status of Combustor Development from Ceramic Materials.- Ceramic Turbine Nozzle Ring Development by Finite Element Analysis.- Compression Structured Ceramic Turbine Rotor Concept.- Session IV Emerging Techniques for Reliability Prediction.- Reliability of Ceramics for Heat Engine Applications.- Structural Design with Brittle Materials.- Application of Fracture Mechanics in Assuring Against Fatigue Failure of Ceramic Components.- Material Parameters for Life Prediction in Ceramics.- Session Va Test, Evaluation, and Development of Components.- Combustion Rig Durability Testing of Turbine Ceramics.- Duo-Density Ceramic Turbine Rotor Development.- The Evaluation of Ceramic Turbine Stators.- Development and Characterization of Ceramic Turbine Components.- Session Vb Test, Evaluation, and Development of Specimens.- High Temperature Static Fatigue Testing of Turbine Ceramics.- A Comparative Study of the Mechanical Strength of Reaction-Bonded Silicon Nitride.- Strength and Fracture Toughness of Silicon Carbide.- Development of Plane Strain Fracture Toughness Test for Ceramics Using Chevron Notched Specimens.- Oxidation Behaviour and Mechanical Properties of Injection Modled Si3N4.- Session VI Critical Issues Workshop.- Comments on Creep of Reaction-Bonded Silicon Nitride and Hot-Pressed Silicon Carbide.- Oxidation and Strength of Silicon Nitride and Silicon Carbide.- Thermal Shock Testing of a Hot-Pressed Si N, Turbine Rotor.- to the Critical Issues Workshop.- Workshop Summary.
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