A STUDY ON FATIGUE CRACK PROPAGATION PROPERTIES USING THE X-RAY DIFFRACTION METHOD
This study evaluated fatigue crack growth characteristics, Besides consider compressive residual stress effect and verified the most suitable shot peening velocity. Fatigue crack growth delay effect was compressive residual stress, but over peening did action projecting velocity that accelerate fatigue crack growth rate. X-ray diffraction technique according to crack length direction was applied to fatigue fractured surface. Fracture mechanics parameters could be estimated by the measurement of X-ray parameters, and the fractography observation was performed using a scanning electron microscope (SEM) for fatigue fracture surface. As the shot peening velocity increases, striation width increased. The changes in X-ray material parameters described above are directly related to the process of fatigue until the initiation of fatigue crack and X-ray diffraction pattern is thought that failure prediction with stress distribution is possible.
X-ray Diffraction Pattern Pole Figure Stress Intensity Factor Fatigue Fractured Surface Fatigue Crack Growth Striation Compressive Residual Stress
Md.Anowar Hossian ManBae Lim SunChul Huh WonJo Park
Department of Mechanical and Precision Engineering, Graduate School, Gyeongsang Nat’l.Univ.,Tongyoun Department of Mechanical and Precision Engineering, Gyeongsang Nat’l.Univ.,Tongyoung, Gyeongnam, 650 Research Center for Aircraft parts Technology, Gyeongsang Nat’l.Univ., Jinju, Gyeongnam, 660-701, Ko Department of Mechanical and Aerospace Engineering, Gyeongsang Nat’l.Univ., Institute of Marine Indu
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）