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Report No.

Sodium thermal fatigue Test; Part I - preliminary analysis on temperature / stress distribution on test specimens

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A preliminary analysis was performed on the sodium thermal fatigue tests which are planned to be conducted with the "Sodium Thermal Fatigue Test Apparatus", which was recently constructed in the material development section. This test machine was constructed for the purpose of aquisition of data needed for sofistication of the evaluation method of creep-fatigue and crack propagation of welded joints. This preliminary analysis is concerned with thermal analysis and stress analysis on test specimens which are planed to be used in the machine. Effects of following parameters on temperature/stress distribution of test specimens under various conditions were analysed. Thcse parameters are considered to play significant roles in the analysis of the results of upcoming experiments. (1)Heat transfer coefficient (2)Thermal shock temperature (3)Speed of submerging specimen (4)Comparison of behavior of base metal and welded joint (5)Comparison of mechanical loading and thermal loading



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