Study Of The Effect Of Defective Characteristics Of Exploding Foil On The Electric Explosion Performance And The Driving Effect Of Flyer

As a typical representative of the third generation of advanced pyrotechnics,the slapper detonator has been widely used in major advanced weapon systems for its advantages of high safety and reliability as well as good environmental adaptability,and is one of the most researched pyrotechnics by scholars at home and abroad.Its basic components include metal exploding foil,substrate,accelerating chamber and HNS-IV blunt sensing detonator column.As the core component of the slapper detonator,the plasma generated by the electrical explosion of the exploding foil is used to drive the impact detonation charge,thus ensuring the safety and reliability of the full-action process of the blasting detonator.This paper takes the exploding foil as the object of study,for the previous has been proposed in the preparation of exploding foil inherent defects will make its performance impact but has not been clearly specified what impact,on the basis of the design and preparation of different defect characteristics of the exploding foil,to carry out a "defect characteristics of the exploding foil on the electric explosion performance and the impact of the flyer drive effect " of a series of studies,the main research content and conclusions of this paper are as follows.(1)Designed five types of exploding foil,a normal defect-free exploding foil,the remaining four are in the exploding foil bridge area at different locations there are different sizes of holes prefabricated defective exploding foil,the use of COMSOL Multiphysics field finite element simulation software for its melting before(melting point 1358K)the electro-thermal process simulation,the simulation results found that the presence of defects will lead to early melting of the exploding foil,and in the vicinity of the defect There is a concentration of heat and current accumulation phenomenon;for prefabricated defective exploding foil located in the same location,the larger the size of the defect the earlier the melting,and for the same size prefabricated defective exploding foil located in different locations,the defect is located in the corners of the bridge area of the exploding foil than in the center of the bridge area first melt.(2)Based on lithography and magnetron sputtering technology to prepare the five type-s of exploding foil required for the study,the use of the laboratory’s own electric explosion test platform for its electric explosion test,the test results show that the presence of defects will lead to exploding foil before the explosion,and the presence of defects in the exploding foil electric explosion parameters are reduced to varying degrees.In the same detonation voltage,for prefabricated defects located in the same location of the explosive foil,the larger the size of the defect the more early outbreak,and determine the final velocity of the burst of the flyer of current density is also smaller;and for the same size prefabricated defects located in different locations of the exploding foil,the defect is located in the corners of the bridge area of the exploding foil is located in the center of the bridge area first early burst,and determine the final velocity of the burst of the flyer of current density is also smaller.(3)The use of laser and other discrete X-ray source of advanced dynamic imaging platform for five kinds of exploding foil drive the same flyer morphology was tested,the test results found that the defective four exploding foil drive the formation of the flyer severely broken.Through the analysis of the full-action process energy conversion of the impact slapper detonator,based on the electric explosion experimental data on the five types of exploding foil electric explosion driven flyer process simulation study,the simulation results show that the presence of defects due to its low deposition energy,resulting in its average speed of driven flyer is low;for defects located in the same location of the exploding foil,the larger the defect size leads to its average speed of driven flyer is lower;and for defects for exploding foils with defects in different locations but with the same dimensions,the average speed of the driven flyer is lower for exploding foils with defects located at the corners of the bridge than for those located at the center of the bridge.(4)Finally,two tools commonly used in quality control-FMEA(Failure Mode Effects Analysis)and FTA(Failure Tree Analysis)were used to analyze the possible failure modes of explosive foil,and based on the principle of 5M1E(Human-Machine,Material,Method,Environment,and Measurement),we proposed a The "zero-defect" management measures for exploding foil products are proposed based on the principle of 5M1E(human-machine-material-loop-measurement),providing a theoretical basis for improving the reliability of its manufacturing process.