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    • 5. 发明授权
    • Method of manufacturing a product by estimating thermal stress using a
model of the product made of different material
    • 通过使用由不同材料制成的产品的模型来估计热应力来制造产品的方法
    • US5129443A
    • 1992-07-14
    • US725452
    • 1991-07-03
    • Mitsuru YanoHisashi YasudaMasatoshi NakamizoTakashi HattoriKenji Itoh
    • Mitsuru YanoHisashi YasudaMasatoshi NakamizoTakashi HattoriKenji Itoh
    • G01N3/02G01N3/18G01N25/00G09B25/00
    • G01N25/00G01N3/18G09B25/00G01N2203/0246
    • A method of manufacturing a heat resistant member includes the step of designing the shape of the heat resistant member, including the substeps of estimating thermal stress of the heat resistant member by heating a model formed by a high-thermal expansion material which has a similar shape to the desired shape of the heat resistant member while the model is restrained and also while it is free. The high-thermal expansion material is different from the material of the member being modeled and has a thermal expansion coefficient greater than that of the material of the member being modeled. Additionally, the step of designing includes the substeps of measuring the strain of the model at each of a plurality of predetermined positions while the model is heated by strain gauges adhered to predetermined positions on the model, and calculating the stress at each predetermined position from the difference in measured strain values between the restraint state and the free state. Finally, the manufacturing method includes casting the heat resistant member to the designed shape.
    • 制造耐热构件的方法包括设计耐热构件的形状的步骤,包括通过加热由具有相似形状的高热膨胀材料形成的模型估计耐热构件的热应力的子步骤 达到期望的耐热构件的形状,同时模型被约束并且同时它是自由的。 高热膨胀材料与被模制部件的材料不同,其热膨胀系数大于被模制部件的材料的热膨胀系数。 此外,设计步骤包括在模型被加热到附着在模型上的预定位置的应变计上时,在多个预定位置的每一个处测量模型的应变的子步骤,以及从模型的每个预定位置计算应力 约束状态和自由状态之间的测量应变值的差异。 最后,制造方法包括将耐热构件浇铸成设计形状。