VERMICULAR GREY CASTING GGV 30 THERMAL FATIGUE EVALUATION USING COFFIN’S TEST AND FEA

Abstract eng:
This paper presents the alternative methodology of standard Coffin’s thermal fatigue test evaluation with respect to the strain localization in regions with high temperature. FE calculation is assumed to provide us with relevant information about material state of real structures under mostly thermal loading in the process of thermal fatigue life assessment. Thus, the same calculation using the same material model and data was suggested as a tool determining local straining of specimen during Coffin’s test. This idea was utilized to evaluate low cycle thermal fatigue curve of vermicular grey casting GGV 30 and compared with the standard one, evaluated using adjusted length of specimen.

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