IGTC-67 Evaluation of Rotor Blade Strength by Cold Spin Tests for 300kW Class Ceramic Gas Turbine (CGT301)(Session C-5 EVALUATION OF CERAMIC COMPONENTS II)

概要

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The newly developed hybrid type ceramic high-pressure stage rotor blades showed sufficient reliability in cold spin tests carried out at room temperature in vacuo ; the average burst speed of these blades was 162% of the rated speed which corresponded to 262% in stress ratio to the stress at the rated speed. The calculated burst strength, assuming the effective volume, Ve=10mm^3, was 790MPa, nearly matching the average flexural strength of the test pieces cut out from the blades.
公益社団法人日本ガスタービン学会の論文