engleski

Predicted Fracture Behavior of Shaft Steels with Improved Corrosion Resistance

One of the crucial steps in shaft design process is optimal selection of material. Two types of shaft steels with improved corrosion resistance, 1.4305 and 1.7225, were investigated experimentally and numerically in this paper in order to determine some of the material characteristics important for material selection in the engineering design process. Ultimate tensile strength and yield strength have been experimentally obtained proving steel 1.4305 has higher values of both. In addition, J-integral is numerically determined as a measure of crack driving force for finite element models of standardized fracture specimens (SENB and DCT). Obtained J values are plotted versus specimen crack growth size (Δa) for different specimen geometries (a/W). Higher resulting values of J-integral for steel 1.4305 than 1.7225 can be noted. Results can be useful as fracture parameter in fracture toughness assessment although this procedure differs from experimental analysis.

steel 1.4305 ; steel 1.7225 ; fracture

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