タービン軸車の加熱計測試験における撓みの成因に関する研究 : 特に A 型, C′型および D 型撓みについて

概要

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In order to investigate into the cause of various deflections liable to take place in turbine shafts during heat-indication test, the authors reproduced deflections experimentally using model shafts as big as about 1/3∿1/6 in dimensions of an actual shaft. Thus, it was made clear that, besides the physical properties of a shaft itself, surface conditions of a shaft such as the way of sticking of dirts and scales, and conditions of machined surface possibly would be important causes for appearance of the deflections. A new type of deflection which, though seemingly resembling the type C deflection, would be due to causes quite different from the said type C was found and designated as type C' deflection. Further it has been made clear that, as well as the deflection of types A and D, this C' type probably would be ascribed to an asymmetric thermal emissivity on the surface of a shaft. The results thus obtained from the tests of model shafts were confirmed in practical heat-indication tests of turbine shafts
社団法人日本鉄鋼協会の論文
1961-04-01