ラジアル翼車の破壊起点解析と強度設計への応用
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概要
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The designing method of the ceramic turbine wheel and the aluminum impeller which meet the recent demands for enhancing the turbine efficiency and the supercharging by increasing rotational speed is described. To determine their optimum configurations which posses high strength without deteriorating their ability in fluid-dynamics, it is necessary in designing process to estimate the wheel strength on the basis of the actual strength which varies at each segmens of the component. To this end, the new technique has been developed which makes it possible to locate the fracture origin by means of taking a picture at the fracture moment of the wheel or impeller rotating in high speed by utilizing fractoemission as the trigger of flash bulb. The turbocharger designed in this new method will contribute to the improvement of fuel economy and the reduction of soot emission in diesel engine.
- 1995-06-10
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