To eliminate the electromagnetic deceleration force, remove the limitations of striker bar’s length and improve the efficiency for the miniature split Hopkinson pressure bar (mini-SHPB) device, the electromagnetic launch system and energy supply system are improved. The series-parallel coil array launch structure is proposed. The multi-winding parallel coils discharge rapidly to eliminate electromagnetic deceleration force without complex control system or detecting the position of the striker bar in the electromagnetic coils, which can remove the length limitation of striker bar, adjust the stress wave width easily, simplify the multistage launch sensor component structure, and improve the launch velocity greatly without changing the coil geometry parameters. The integrative energy storage structure comprised of “lithium battery + booster module + capacitor group” is proposed. Through the booster module, the capacitor can be charged controllably and the structure can quickly complete many times tests in a single charge, which is secure, reusable and accurate. By using the improved device, the dynamic mechanical properties of Inconel 625 based on laser engineered net shaping (LENS) process are tested in two different build directions under different high strain rates. The tests show that the properties are affected by build direction because of the material anisotropy.

为消除电磁减速力，消除撞杆长度限制，提高微型分体式霍普金森压杆（mini-SHPB）装置的效率，对电磁发射系统和供能系统进行了改进。提出了串并联线圈阵列发射结构。多绕组并联线圈快速放电消除电磁减速力，无需复杂的控制系统，无需检测撞杆在电磁线圈中的位置，可解除撞杆长度限制，轻松调整应力波宽度，简化多级发射传感器组件结构，在不改变线圈几何参数的情况下，大大提高发射速度。提出了“锂电池+升压模块+电容器组”的一体化储能结构。通过升压模块，可以对电容器进行可控充电，该结构一次充电即可快速完成多次测试，安全、可重复使用、准确。通过使用改进的设备，在不同的高应变率下，在两个不同的构建方向上测试了基于激光工程净成形 (LENS) 工艺的 Inconel 625 的动态机械性能。测试表明，由于材料的各向异性，特性受构建方向的影响。通过使用改进的设备，在不同的高应变率下，在两个不同的构建方向上测试了基于激光工程净成形 (LENS) 工艺的 Inconel 625 的动态机械性能。测试表明，由于材料的各向异性，特性受构建方向的影响。通过使用改进的设备，在不同的高应变率下，在两个不同的构建方向上测试了基于激光工程净成形 (LENS) 工艺的 Inconel 625 的动态机械性能。测试表明，由于材料的各向异性，特性受构建方向的影响。