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EXPERIMENTS ON HORIZONTAL CRACK PROPAGATION IN RAIL HEAD

T. Yamazaki, Toshiyuki Sugiyama

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Abstract

Rail on the Shinkansen high-speed line has often developed fatigue failures with cracks propagating horizontally just under the rail head upper surface. Fatigue propagation tests were conducted with six different rail sections, which were of different alloys and/or were heat treated in various manners. Quenched and tempered rail gave indications of greater deformation and crack propagation than the other types.

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What this paper is about

Rail on the Shinkansen high-speed line has often developed fatigue failures with cracks propagating horizontally just under the rail head upper surface. Fatigue propagation tests were conducted with six different rail sections, which were of different alloys and/or were heat treated in various manners. Quenched and tempered rail gave indications of greater deformation and crack propagation than the other types.

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Available abstract

Rail on the Shinkansen high-speed line has often developed fatigue failures with cracks propagating horizontally just under the rail head upper surface. Fatigue propagation tests were conducted with six different rail sections, which were of different alloys and/or were heat treated in various manners. Quenched and tempered rail gave indications of greater deformation and crack propagation than the other types.

Key concepts: Head (geology), Structural engineering, Deformation (meteorology), Fracture mechanics, Materials science, Engineering, Geology, Forensic engineering

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