In the field of aerospace material mechanics research, precise dynamic loading testing is crucial for breaking through technical bottlenecks. In 2023, we collaborated with the School of Aeronautics and Astronautics and Mechanics at Tongji University, delivering a set of six-channel hydraulic actuation system - dynamic loading test system and two electro-hydraulic servo fatigue testing machines, helping the research team tackle the challenges of dynamic mechanical performance testing for complex structures.
The system features excellent multi-axis collaborative loading capabilities: 4 sets of 50kN dynamic actuators work in synergy with 2 sets of 100kN dynamic-static actuators, enabling wide-frequency dynamic loading from 0.01 to 100Hz with a loading accuracy of ±0.5%, perfectly meeting international and domestic standards such as ASTM E647 and GB/T 21143. In fatigue tests on composite laminates, the system accurately simulated the stress conditions of aircraft skins under complex working conditions through multi-axis iterative control technology, obtaining critical fatigue life data.
![Experimental scene: Researchers operating equipment for composite material dynamic loading tests]
For fracture mechanics research on large structural components, the six-channel synchronous control function of the system has demonstrated unique advantages. In the dynamic strength test of a certain type of satellite bracket, the equipment simultaneously applied axial loads and lateral torques, successfully capturing the crack propagation law of the structure under composite stress, providing direct data support for structural optimization.
[Data result chart: Fatigue crack growth curve and stress distribution cloud map obtained from the test]
During the project implementation, we provided full technical support, including equipment installation and commissioning, operation training, and customized test scheme design. Currently, the system has become a core equipment in Tongji University's "Aerospace Structure Anti-Fatigue Design" key laboratory, supporting 3 national-level research projects, with relevant results published in authoritative journals such as Acta Materiae Compositae Sinica.
