Evaluation of stress intensity factors of thin AZ31B magnesium alloy
plate under biaxial tensile loading
plate under biaxial tensile loading
(1. Graduate School, Saitama Institute of Technology, Fusaiji 1690, Fukaya, Saitama 369-0293, Japan;
2. Department of Material Science and Engineering, University of Science and Technology Liaoning,
Anshan 114051, China;
3. Department of Material Science and Engineering, Saitama Institute of Technology,
Fusaiji 1690, Fukaya, Saitama 369-0293, Japan)
2. Department of Material Science and Engineering, University of Science and Technology Liaoning,
Anshan 114051, China;
3. Department of Material Science and Engineering, Saitama Institute of Technology,
Fusaiji 1690, Fukaya, Saitama 369-0293, Japan)
Abstract: Stress intensity factors of thin AZ31B magnesium alloy sheet under biaxial tension loading were analyzed by modified Dugdale model. K-values with crack angle of 90˚ obviously show that there is no influence of the loading condition in Mode-I. In the 45˚ case, KⅠ values are obtained within 10% errors when they are calculated by modified Dugdale model under biaxial loading. It is concluded that the modified Dugdale model is one of effective ways to evaluate stress intensity factor of AZ31 magnesium alloy sheet appropriately.
Key words: Mg alloy; plate; cross-rolling; isotropic material; biaxial tension; stress intensity factor