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简要介绍新近研制成功的JBC-300型电子测力冲击试验机结构原理.它主要由机械主机和以计算机为核心的电控系统组成.该试验机除可获得材料的冲击功A_t、弹性功A_l、裂纹萌生功A_r、裂纹扩展功A_p、断裂功A_f、以及弹性载荷F_e、屈服载荷F_y、最大载荷F_m、断裂点F_f等动态力学性能参数,还能获得冲击力对变形(挠度)、冲击力对时间、变形对时间关系曲线.该试验机还能用于材料某些内在质量的检验,其主要性能指标及操作的方便性、图文显示的直观性等均优于国外同类产品.
The structure principle of the newly developed JBC-300 electronic impact testing machine is briefly introduced, which is mainly composed of a mechanical host computer and a computer-based electronic control system. In addition to obtaining the impact energy A_t of the material, the elastic work A_1 , Crack initiation energy (A_r), crack extension work (A_p), fracture work (A_f) and dynamic mechanical properties such as elastic load F_e, yield load F_y, maximum load F_m and fracture point F_f, but also the effect of impact on deformation, Time, deformation versus time curve.The testing machine can also be used for testing some of the inherent quality of the material, the main performance indicators and ease of operation, the visual display of the text is better than similar foreign products.