Research On The Structure Design And Key Technology Of The Nondestructive Testing System Carrying Platform

Aircraft wing damage will seriously affect the flight safety,at present,manual inspection is mainly used in it’s non-destructive testing.The cost of manual inspection is high,the efficiency of manual inspection is low and this method can’t guarantee the comprehensiveness of detection.Automatic nondestructive testing of aircraft wing skin has become a hot spot of research.In this paper,a nondestructive testing system consisting of a carrying platform,a UR10 manipulator and an ultrasonic phased array detector is designed,and the key technologies of the carrying platform and the detection system are studied.The main contents are as follows:1.According to the technical requirements,the carrying platform structure is designed,and the hydraulic principle of the working device of the platform is studied.2.Analyzing the structure of the carrying platform by finite element method to verify the safety and stability of the whole structure.3.The derricking stability of the carrying platform is studied,and the large arm derricking mechanism is optimized based on ADAMS.At the same time,damping network is added in the derricking hydraulic circuit.Finally,ADAMS and AMESim are used to make joint simulation of the improved arm frame derricking system,the simulation results show that,after improvement,the stability of the derricking stability is greatly improved.4.The integration and detection scheme of the non-destructive testing system are defined,and the leveling precision of the leveling mechanism is optimized based on ADAMS.Then,the performance of the prototype carrying platform is tested.Finally,the detection system is integrated and the nondestructive testing is carried out.In summary,the research results of this subject have laid the foundation for the realization of semi-automatic and automatic nondestructive testing of aircraft wing skin.It also has a certain guiding significance for the study of the derricking stability of the single cylinder three hinges variable derricking mechanism and the optimization of the leveling precision of hydrostatic leveling mechanism...