Investigation and Application of Impact Testing Technologies Based on Electromagnetic Loading
Impact testing techniques based on electromagnetic loading were proposed to solve the problems of loading speed,loading force,safety problems and single mode of the existing impact testing technology.The accurate control of pulse width,amplitude and loading speed of pulse electromagnetic force can be realized by adjusting the power control parameters(mainly is capacitance and charging voltage)of electromagnetic driving impulse testing technology.The fast conversion of tension-compression test can be realized by changing the direction of electromagnetic loading head.In addition,as more and more attention has been paid to the testing of dynamic mechanical properties of materials under compound impact loads,multi-axis testing based on electromagnetic drive can accurately control the simultaneous discharge of multiple groups of capacitors through the control program,so as to ensure the synchronization of the isotropic impact load acting on the specimen material.Therefore,the testing technology based on electromagnetic loading has the advantages of good controllability,high repeatability,high synchronization of compound loading,high testing accuracy and experimental efficiency.The problems of traditional testing methods,such as small loading speed range,limited strain rate range and difficult impact testing with large loading force,are solved,and the safe,stable,reliable and more accurate control and measurement of impact testing experiment are realized.
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