Thermal measuring and testing – Thermal testing of a nonthermal quantity – Of susceptibility to thermally induced deteriouration – flaw,...
Patent
1995-03-29
1997-05-20
Gutierrez, Diego F. F.
Thermal measuring and testing
Thermal testing of a nonthermal quantity
Of susceptibility to thermally induced deteriouration, flaw,...
738664, G01N 360, G01N 2572, G01M 1900
Patent
active
056306679
ABSTRACT:
The heat cracking of a heat-resistant member is predicted by (a) producing a model having a similar shape to that of the heat-resistant member from a photo-set resin having a thermal conductivity of 0.1-0.2 W/m.multidot.K, (b) introducing a hot air at a temperature of 50.degree. C. or higher and lower than a softening point of the photo-set resin into the model, (c) measuring a temperature in each portion of the model by a thermal image analyzer, (d) measuring the changes of temperature distribution in the model with time to find whether or not there are overheated portions in the model, and (e) determining the overheated portions as portions in which heat cracking may take place.
REFERENCES:
patent: 3964313 (1976-06-01), Connick
patent: 4711131 (1987-12-01), Hopkins
patent: 5048346 (1991-09-01), Yano et al.
D MEC Modeling, D MEC Ltd, p. 3, Figs. 1-6, w/translation (Aug. 1993).
Nikkan Kogyo Shinbun Mar. 11, 1994 w/translation.
Optimization of Casting Design, 60th World Foundry Congress, The Hague/Netherlands 1993.
Gutierrez Diego F. F.
Hitachi Metals Ltd
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