마그네슘합금 AZ31의 피로균열전파속도의 통계적 특성
Statistical Aspects of Fatigue Crack Propagation Rate in Magnesium Alloy AZ31
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초록
The purpose of this research is to investigate the statistical behavior of fatigue crack propagation(FCP) in magnesium alloy AZ31. FCP tests have been performed on compact specimens of AZ31 at load ratio conditions and maximum fatigue load conditions to obtain statistical data of FCP. It was found that the variability of fatigue crack propagation rate was significantly large at initial stage of FCP and gradually became smaller as the fatigue crack propagated. The finding of the study showed that increasing the load ratio could increase the variability of fatigue crack propagation rate at initial FCP stage. The samller the load ratio, the higher the fatigue crack propagation rate at initial stage. It was also found that the load ratio is a factor affecting the fatigue crack propagation rate in magnesium alloy.
Abstract
The purpose of this research is to investigate the statistical behavior of fatigue crack propagation(FCP) in magnesium alloy AZ31. FCP tests have been performed on compact specimens of AZ31 at load ratio conditions and maximum fatigue load conditions to obtain statistical data of FCP. It was found that the variability of fatigue crack propagation rate was significantly large at initial stage of FCP and gradually became smaller as the fatigue crack propagated. The finding of the study showed that increasing the load ratio could increase the variability of fatigue crack propagation rate at initial FCP stage. The samller the load ratio, the higher the fatigue crack propagation rate at initial stage. It was also found that the load ratio is a factor affecting the fatigue crack propagation rate in magnesium alloy.
참고문헌 (11)
- Y. Nakai, "Fatigue crack initiation site and propagation paths in high-cycle fatigue of magnesium alloy AZ31", International Journal of Fatigue, 123, pp.248~254 (2019)
- 김현우, "마그네슘 합금 판재(AZ31B)의 온도 및 성형속도에 따른 2D-draw 굽힘 특성 분석", 한국기계기술학회지, 21(2), pp.221~227 (2019), 한국기계기술학회[DOI]
- 최선순, "AZ31 마그네슘합금의 피로균열전파거동에 미치는 영향 인자", 한국기계기술학회지, 24(1), pp.72~77 (2022), 한국기계기술학회[DOI]
- B. L. Mordike, "Magnesium : Properties-applications-potential", Materials Science and Engineering: A, 302(1), pp.37~45 (2001)
- K. Tokaji, "Fatigue Crack Propagation and Fracture Mechanisms of Wrought Magnesium Alloys in Different Environments", International Journal of Fatigue, 31(7), pp.1137~1143 (2009)
- S. Zheng, "An experimental study of fatigue crack propagation in extruded AZ31B magnesium alloy", International Journal of Fatigue, 47, pp.174~183 (2013)
- Z. Han, "Acoustic emission study of fatigue crack propagation in extruded AZ31 magnesium alloy", Materials Science and Engineering:A, 597(12), pp.270~278 (2014)
- C. Cauthen, "Modeling fatigue crack growth behavior in rolled AZ31 magnesium alloy using CTOD based strip yield modeling", International Journal of Fatigue, 96, pp.196~207 (2017)
- T. L. Anderson, "Fracture mechanics" (1995), CRC Press
- S. S. Choi, "Statistical aspects of fatigue crack growth rate by various load ratios in Mg alloy", Proceedings of the KSTP Spring Conference 2010, pp.207~208 (2010)
- S. S. Choi, "Statistical aspects of fatigue crack growth rate under different maximum load conditions in Mg alloy", Proceedings of the KSAE Fall Conference 2010, pp.2897~2899 (2010)