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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 .
The method of measuring dynamic crack growth rate under stress wave loading was established by using the improved SHPB (Post-Hopkinson Pressure Bar) experimental device, and the experimental determination of 18Cr2Ni4WA steel was carried out.The results show that the method proposed in this paper is simple and easy to use, Determination of rate of crack propagation.