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Keywords: ceramics
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Proceedings Papers

Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T18A002, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79194
... Abstract Converting sub-MW turbine rotor blades to ceramics is not a trivial endeavour, but the promise of a substantial increase in turbine inlet temperature (TIT), and therefore cycle efficiency and power density, could mean wide use in upcoming, distributed power, turboelectric aircraft...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A018, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59872
... is the rotational speed (rpm). Under these conditions, significant heat is generated in the bearings, and the use of hybrid rolling bearings with steel rings and ceramic rolling elements looks more attractive due to the ceramic’s low density and low coefficient of thermal expansion. A computational method...
Proceedings Papers

Proc. ASME. GT2011, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Wind Turbine Technology, 517-527, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46831
... in SN282 than in AS800 silicon nitride. The critical impact velocity where targets fractured catastrophically decreased with decreasing target size and was lower in SN282 than in AS800. Overall, FOD by steel projectiles was significantly less than that by silicon-nitride ceramic counterparts, due to much...
Proceedings Papers

Proc. ASME. GT2010, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Education; Electric Power; Manufacturing Materials and Metallurgy, 493-502, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23574
... of 1 mm, occurring from an impact velocity of 50 m/s. A backside cracking analysis based on the elastic foundation approach was made as a function of target thickness. Overall, FOD by ceramic projectiles was significantly greater than that by hardened metallic counterparts. foreign object damage...
Proceedings Papers

Proc. ASME. GT2009, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation; Education; Electric Power; Awards and Honors, 241-248, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59031
.... Prediction of impact force was made based on a yield model and compared with the conventional Hertzian contact-stress model. foreign object damage (FOD) impact damage impact test silicon nitrides ceramics ballistic impact Proceedings of ASME Turbo Expo 2009 Power for Land, Sea, ad Air -TU BA R...
Proceedings Papers

Proc. ASME. GT2002, Volume 4: Turbo Expo 2002, Parts A and B, 103-107, June 3–6, 2002
Publisher: American Society of Mechanical Engineers
Paper No: GT2002-30508
... 05 02 2009 A novel technique for estimating the critical size of the frontal process zone in ceramics was proposed using a single-edge V-notched beam (SEVNB) test method. A three-point flexure test was carried out on a silicon nitride and two kinds of graphite test specimens with sharp...
Topics: Ceramics
Proceedings Papers

Proc. ASME. GT2002, Volume 4: Turbo Expo 2002, Parts A and B, 47-58, June 3–6, 2002
Publisher: American Society of Mechanical Engineers
Paper No: GT2002-30501
... 05 02 2009 Practical limits on number of specimens that can be tested lead to uncertainty in the estimated Weibull parameters. This paper presents an evaluation of four techniques for estimating confidence intervals for size-scaled Weibull parameters of monolithic ceramics...