Beijing Institute of Technology: Solar sail test equipment project and instrumental drop hammer impact testing machine project

The main principle of the solar sail test device project is that the large motor drives the solar sail test device to rotate through the spindle mounted on the bearing seat。The small motor drives the winding cylinder to rotate relative to the stopper through the gear。The connecting line of the small motor is connected through the collector slip ring。The electromagnet closes and pushes the stopper hook away from the stopper。The speed of the two motors can be fed back in real time and controlled by the PLC program。This device is a solar sail test device, which is used to simulate the process of solar sail deployment in a vacuum chamber on the ground。The device is driven by the main motor to rotate, the speed is not less than 500r/min;The central winding cylinder can be rotated relative to the stop column, and the speed is not less than 100r/min。The baffle post has a bouncing mechanism, which can be bounced off through the control mechanism。

The successful development of the project will help accelerate the vigorous development of China's aviation industry。
      DIT123 instrument drop hammer impact testing machine, the maximum energy is 1200 joules, the equipment is mainly for a variety of metal, non-metallic pipes and plates (including a variety of non-metallic materials such as plastics, ceramics, nylon, building materials, etc.) impact resistance test testing equipment。The force and deformation of the impacted specimen are measured by the impact sensor in the high-speed data acquisition system，The force-displacement-energy curve of the impact process and the characteristic point on the curve are obtained: yield force Fgy，Maximum power Fm，Cracking force Fiu，Crack arresting force Fa and maximum energy Wm，Crack initiation energy Wiu，Crack arresting energy Wa，Total impact energy Wt and corresponding displacement，The fracture analysis of the specimen during impact is realized，Reflects the ability of material to resist dynamic impact force,And the dynamic fracture toughness analysis of the material at high strain rate。该机能够全面满足ASTM D 7136/D 7136M-05《2024欧洲杯买球》,ASTM D 7192-05 《2024欧洲杯买球》,ASTM D 3763-02《欧洲杯买球赛官网》等标准。

The equipment can completely replace similar imported equipment, and the price is only about half of the imported machine, and the cost performance is very high。