Quasistatic Pressing for Explosive Device Neutralization
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Solution Overview
Problem
Conventional methods for disarming explosive devices often cause them to function due to shock and heat insults, necessitating a safer and controlled method to neutralize these devices without compromising structural integrity.
Innovation Solution
A press device utilizing actuators like hydraulics, electric geared actuators, and pneumatics, combined with mechanical advantage mechanisms such as springs, cams, and gears, to apply high forces slowly and quasistatically, allowing heat dissipation and preventing shock, using specialized wedges and apparatus designed for explosive device neutralization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional tools shoot a project at the explosive device or use high explosive shaped charge to perforate the explosive device, then the required force is generated quickly, but shock and heat insults are produced that can cause the explosive device to function
Solution Approach 1:
The patent replaces dynamic mechanical systems (projectiles, shaped charges) with a quasistatic mechanical press system. The press applies force through a controlled pressing motion rather than high-velocity impact, substituting the mechanical action of penetration with a controlled compression process that avoids shock waves and heat generation while still achieving structural compromise of the explosive device
Solution Approach 2:
The pressing action is performed in a controlled, periodic manner with the press head moving toward and away from the explosive device in a rhythmic sequence. This periodic action allows the structure to deform gradually under repeated loading cycles, achieving failure through accumulation of stress rather than single-impact shock, thereby preventing harmful shock and heat effects
2Reliability
If conventional tools are used to generate required forces, then the explosive device can be neutralized, but the structural integrity must be compromised which risks unintended detonation
Solution Approach 1:
The patent changes the rate parameter of force application from high-velocity (dynamic) to quasistatic (slow). By controlling the pressing speed and applying force gradually, the system achieves the necessary structural compromise for neutralization while maintaining control over the deformation process, preventing sudden failures that could trigger detonation
Solution Approach 2:
The system incorporates feedback control where the press operator monitors the pressing process and adjusts the application of force in real-time. The controlled pressing motion allows for continuous assessment of structural response, enabling the operator to apply just enough force to compromise integrity without exceeding thresholds that would cause unintended detonation
3Productivity
If high forces are applied quickly to neutralize the explosive device, then the neutralization process is fast, but heat dissipation is prevented and shock is generated
Solution Approach 1:
The pressing operation uses periodic cyclic motion where the press head moves toward the explosive device, applies force for a brief period, then retracts. This periodic action creates intervals during which heat can dissipate from the contact points and surrounding materials, preventing thermal accumulation while maintaining neutralization effectiveness through repeated cyclic loading
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The press device effectively disarms explosive devices by applying controlled forces, ensuring safety and preventing unintended detonation, while maintaining structural integrity.
Implementation Method 1
Mechanically actuated press systems use a combination of springs, cams and gears to create the mechanical advantage. The force of the actuator is further amplified by a wedge, a simple machine that generates a reaction force.
Implementation Method 2
Mechanically actuated press systems use a combination of springs, cams and gears to create the mechanical advantage.
Implementation Method 3
The force of the actuator is further amplified by a wedge, a simple machine that generates a reaction force.
Data Source
AI summary
A press device having a cradle, a base plate, a fracturing device, an actuator, a switch, and a body. The base plate is located at a first end of the cradle. The fracturing device is proximally located at a second end of the cradle. The cradle is adapted to work in communication with the base plate to maintain alignment between the baseplate and the fracturing device. The actuator is proximally located to the second end of the cradle. The switch is operably connecting the actuator to the fracturing device. The body holds the cradle, base plate, fracturing device, actuator driven ram, and switch. The preferred embodiment uses a hydraulic ram.