Composite drop hammer impact testing machine

Composite drop hammer impact testing machine is mainly used for prefabrication damage testing of composite sheets, which meets various specifications of aerospace and automotive industries。Impact value sensor and test system are adopted，The loading and deformation transients of the impacted specimen during fracture were measured by the high-speed data acquisition card through the oscillographic impact sensor，Shock absorption work，The force-displacement-energy curve of the impact process and the characteristic points on the curve: slope discontinuity force F1，Maximum contact force Fm，Maximum power Wm，Total impact energy Wt and corresponding displacement，The impact process of the sample can be analyzed，This paper analyzes the resistance of the material to dynamic impact load, the force and deformation characteristics of the sample under impact load and the dynamic fracture toughness of the material under high strain rate。