Very High Speed Plane Bending Fatigue Test : (1st Report, On The Fatigue Testing Machine)

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概要

• 論文の詳細を見る

• In order to investigate the effect of the speed of stress reversal on the endurance limit, and to reduce the time necessary for a fatigue test, a high speed pneumatic fatigue testing machine has been developed. Ultrasonic siren (air interruptor) is used as an exciter for a plane bending type testing machine for the frequency range of 3 to 20 kc/sec. Specimen is a uniform bar of the rectangular cross section vibrating in the first free-free mode, and is supported by steel wires at the nodal points. Tests were made on normalized carbon steels at frequencies up to 18 kc/sec. In order to compare the endurance limit at high speed with that at ordinary speed, the same materials were tested by the ordinary plane bending machine and the rotary bending machine. Speed dependence of the endurance limit obtained from these tests is notable, and the endurance limit at the highest frequency was 43% higher than that in the ordinary frequency range.

• 一般社団法人日本機械学会の論文

著者

• Sudo Takuro

  The 8th Dept. Central Research Laboratory Hitachi Ltd.

• Yamane Masami

  Central Research Laboratory Hitachi Ltd.

• Yamane M.

  Central Research Laboratory, Hitachi Ltd.

関連論文

• Very High Speed Plane Bending Fatigue Test : (1st Report, On The Fatigue Testing Machine)
• High Speed Plane Bending Fatigue Test : 4th Report, Theoretical Consideration on the Speed Dependency, Part 2 (the Journal and the Transactions of the Japan Society of Mechanical Engineers)
• High Speed Plane Bending Fatigue Test : 2nd Report, On the Speed Dependency of the Endurance Limit

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