【摘要】 利用改进的SHPB(SpiteHopkinsonPressureBar)压杆实验装置 ,建立了应力波加载条件下动态裂纹扩展速度的测定方法 ,并对 18Cr2Ni4WA钢进行了实验测定 .结果表明本文建立的方法简便易行 ,可用于高加载速率下裂纹扩展速度的测定 .更多还原

【Abstract】 The improved SHPB (Spite Hopkinson Pressure Bar)experimental apparatus was used in this paper,and the method of measuring the crack propagation speed under stress wave loading was established.The crack propagation speed of 18Cr2Ni4WA steel was measured by use of this method.The results show that the method is simple and convenient,and can be used for measuring the crack propagation speed at high loading rate.更多还原