Professor Sergey Kuzmin, Russia, Volgograd State Technical University Explosive welding of multilayer packages: Duration of initial acceleration Professor Sergey Kuzmin, Russia, Volgograd State Technical University

Scheme of Simultaneous Explosion Welding Initial Disposition of Plates in Sheet Pile

Scheme of Simultaneous Explosion Welding Initial Disposition of Plates in Sheet Pile Process of Layer Colliding of Plates

Scheme of Simultaneous Explosion Welding Initial Disposition of Plates in Sheet Pile Process of Layer Colliding of Plates

Models of Process of Colliding Metal Plates in Explosion Welding of Multilayer Sheet Piles Belyaev’s model Model of VSTU Acceleration Stages: Starting Stage (Period of Impulse Transfer from Colliding Body to Collided Packet); Final Stage (Acceleration Provided by Pressure of Detonation Products)

Mathematical (Computed) Model Models of Process of Colliding Metal Plates in Explosion Welding of Multilayer Sheet Piles Mathematical (Computed) Model - Mass of Sheet Pile Model of VSTU - Reduced Time of Acceleration Phase p01 - Maximum Contact Point Pressure - Tuning Indexes

Experiment Procedure Experiment Diagram Typical Time History nichrome wire current generator digital oscilloscope Typical Time History

Experiment Procedure Experiment Diagram Typical Time History nichrome wire current generator digital oscilloscope Typical Time History 1 – Acceleration Curve of Flayer Plate; 2 – Initial Section of Acceleration of Sheet Pile with Double Welded Plates (Experiment); 3 – Velocity of Sheet Pile, Computed by Momentum Conservation Law

Experimental results Dependence of Duration of Initial Acceleration Stage in from Thickness of Plates Being Welded  and Acceleration Phase h1/H

Experimental results Dependence of Duration of Initial Acceleration Stage in from Thickness of Plates Being Welded  and Acceleration Phase h1/H

Experimental results Dependence of Duration of Initial Acceleration Stage in from Thickness of Plates Being Welded  and Acceleration Phase h1/H

Experimental results Dependence of Duration of Initial Acceleration Stage in from Thickness of Plates Being Welded  and Acceleration Phase h1/H tin, ms 12 8 4 dS, mm 10 h1/H 8 1 0,7 6 0,4 4 0,1

Experimental results Dependence of Mathematical Model Tuning Indexes from Acceleration Phase h1/H and Plates Thickness dS 0,1 0,4 0,7 h1/H 1 , mm k h1/H 0,1 0,4 0,7 1 n , mm 0,1 0,4 0,7 h1/H 1 , mm 

THANK YOU FOR YOUR ATTENTION