1. 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

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

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

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

5. 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)

6. 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

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

8. 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

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

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

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

12. 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

13. 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 

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