Experimental study on simulation test system and electrostatic monitoring of rub fault of air circuit of engine based on the IoT perception

Aeroengine gas-path fault is a critical engine fault, which can seriously affect the normal operation of the engine and threaten flight safety. Due to aeroengine working characteristics, friction faults probably occur between the rotor and stator during aeroengine operation. Therefore, it is crucial to accurately and quickly judge the friction fault for the entire engine fault. According to aeroengine friction fault mechanism, a friction fault monitoring technology was proposed based on the electrostatic induction principle to solve the problem that the friction fault of aeroengine blades is difficult to monitor online. The Internet of things (IoT) technology was employed to acquire data from equipment and state information, and a friction fault test system was developed to simulate electrostatic monitoring of gas-path high-speed airflow and multi-impact loads. Then, a test bench was designed to conduct electrostatic monitoring experiments of multi-group friction under different rubbing modes, different materials and different rubbing degrees. Application of the IoT technology can fulfill real-time monitoring of the operation state of equipment and reveal the defects of large equipment, promoting the merge of IoT with the manufacturing industry and pushing IoT development towards a more transparent and intelligent future.