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논문 기본 정보

자료유형
학술저널
저자정보
Josip Brnic (University of Rijeka) Sanjin Krscanski (University of Rijeka) Marino Brcic (University of Rijeka) Lin Geng (Harbin Institute of Technology) Jitai Niu (Harbin Institute of Technology) Biao Ding (Shanghai University)
저널정보
국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.72 No.2
발행연도
2019.1
수록면
245 - 256 (12page)

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The experimentally determined mechanical behavior of the material under the prescribed service conditions is the basis of advanced engineering optimum design. To allow experimental data on the behavior of the material considered, uniaxial stress tests were made. The aforementioned tests have enabled the determination of mechanical properties of material at different temperatures, then, the material's resistance to creep at various temperatures and stress levels, and finally, insight into the uniaxial high cyclic fatigue of the material under different applied stresses for prescribed stress ratio. Based on fatigue tests, using modified staircase method, fatigue limit was determined. All these data contributes the reliability of the use of material in mechanical structures. Data representing mechanical properties are shown in the form of engineering stress-strain diagrams; creep behavior is displayed in the form of creep curves while fatigue of the material is presented in the form of S-N (maximum applied stress versus number of the cycles to failure) curve. Material under consideration was 18CrNi8 (1.5920) steel. Ultimate tensile strength and yield strength at room temperature and at temperature of 600°C: [𝝈𝒎,𝟐𝟎/𝟔𝟎𝟎=(𝟔𝟏𝟑/𝟏𝟓𝟔)MPa; 𝝈𝟎.𝟐,𝟐𝟎/𝟔𝟎𝟎=(𝟒𝟓𝟖/𝟏𝟒𝟏)MPa], as well as endurance (fatigue) limit at room temperature and stress ratio of 𝑹=−𝟏: (𝝈𝒇,𝟐𝟎,𝑹=−𝟏 = 285.1MPa).

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