도시철도 차량 차륜의 피로강도 평가 = Evaluation of Multiaxial Fatigue Strength of a Urban Railway Wheel Steel

다국어 초록 (Multilingual Abstract)

Uniaxial and biaxial torsional fatigue tests were conducted on the samples extracted from urban railway wheel steel. Ultimate and yield strengths of the steel were 1027.7 MPa and 626 MPa, respectively. The uniaxial fatigue limit was 422.5 MPa, corresponding 67% of the ultimate tensile strength. The ratio of was 063. Fatigue strength coefficient and exponent were 1319.5 MPa and 0.339, respectively. Maximum principal and equivalent strain were found to be adequate parameter to predict fatigue lifetime of the steel under multiaixal fatigue condition.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 실험방법
• 3. 실험결과 및 고찰
• 4. 결론
• 참고문헌(References)

참고문헌 (Reference)

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3 A Bernasconi, "Multiaxial fatigue of a railway wheel steel under non-proportional loading" 28 (28): 663-672, 2006

4 J. Ahlstrὂm, "Modified railway wheel steels: Production and evaluation of mechanical properties with emphasis on low-cycle fatigue behavior" 40 (40): 1557-1567, 2009

5 J.A. Bannantine, "Fundamentals of metal fatigue analysis" Prentice Hall Inc 1990

6 Y. Okagata, "Fatigue strength evaluation of the Japanese railway whee" 30 (30): 356-371, 2007

7 V. Wagner, "Cyclic deformation behaviour of railway wheel steels in the very high cycle fatigue (VHCF)regime" 33 : 69-74, 2011

8 K. Dan Van, "Biaxial and Multiaxial Fatigue, European Group on Fracture" Mechanical Engineering Publications 479-496, 1989