科创中国

翟同广疲劳裂纹启裂源和晶界阻力的定量测量技术

Motivation: scientifically significant to quantitatively understand early stage of fatigue crack growth at microstructure scale. 预防断裂：装备关键材料的早期损伤预测非常重要

• Four point bend fatigue testing, Load controlled, R=0.1, f=20 Hz, room temperature

• Maximum stress varies to measure the life

• Sample surface well polished

• Crack population measured at each stress

图文来源：华南新材料创新园