1249 マグネシウム合金押出材の疲労寿命及びき裂進展挙動における荷重比の影響(G03-8 材料力学(8)疲労・強度1,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)
詳細
Fatigue experiments were carried out in laboratory air using an extruded magnesium alloy, AZ31. The crack propagation behavior was analyzed using a modified linear elastic fracture mechanics parameter, M. The relation crack propagation rate vs. M parameter was found to be useful in predicting fatigue lives at different R ratios. Good agreements between the estimated and experimental results at each of stress ratios were obtained.
