報告書番号

E282015

タイトル（和文）

PREDICTION OF THERMAL FATIGUE LIFE IN HIGH TEMPERATURE COMPONENT MATERIALS FOR POWER PLANT

タイトル（英文）

PREDICTION OF THERMAL FATIGUE LIFE IN HIGH TEMPERATURE COMPONENT MATERIALS FOR POWER PLANT

概要 （図表や脚注は「報告書全文」に掲載しております）

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概要 （英文）

FOR IMPROVING THE RELIABILITY OF THERMAL POWER PLANTS,IT IS BECOMING MORE AND MORE IMPORTANT TO EXACTLY ESTIMATE THE THERMAL FATIGUE DAMAGE ACCUMULATING IN HIGH TEMPERATURE COMPONENTS. IN THIS REPORT,DISCUSSION WAS MADE ON THERMAL FATIGUE LIFE PREDICTION METHODS FOR SEVERAL HIGH TEMPERATURE COMPONENT MATERIALS WITH LOW-STRENGTH AND HIGH-DUCTILITY. FOR THE APPLICATION OF THE STRAIN RANGE PARTITIONIONG APPROACH TO THE THERMAL FATIGUE LIFE PREDICTION,TOW SIMPLIFIED PROCEDURES WERE EMPLOYED TO EVALUATE CREEP STRAIN COMPONENT IN THE INELASTIC STRAIN RANGE. AS A RESULT,THE THERMAL FATIGUE LIFE IN MOST CASES INCLUDING THERMAL FATIGUE WITH STRAIN HOLD-TIME COULD BE PREDICTED WITHIN A FACTOR OF TWO.

報告者

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