Multi-Layer Protective Device for Blunt Trauma Reduction
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Solution Overview
Problem
Existing protective devices, such as body armor and helmets, suffer from high rigidity and undamped impulse transmission, leading to potential injuries from shock and blunt trauma due to kinetic energy impacts.
Innovation Solution
A multi-layered protective device with a first layer of stab- and bullet-resistant material and a second layer of an elastic, repeating geometric structure made of plastic or silicone rubber, featuring cavities with hermetically sealed openings that allow controlled gas escape, and a third layer to manage internal pressure, distributing and dampening the kinetic energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high-strength materials are used for protective devices, then penetration resistance is improved, but impulse transmission to the wearer increases
Solution Approach 1:
The protective device is divided into multiple layers: a first layer made of high-strength stab- and bullet-resistant material for penetration protection, and a second layer made of elastic material with a repeating geometric structure forming cavities for impulse dampening. This segmentation allows each layer to specialize in one function, resolving the contradiction between penetration resistance and impulse transmission.
Solution Approach 2:
The protective device combines two fundamentally different material systems: rigid high-strength materials (such as aramid or ceramic) for the first layer and elastic materials (such as silicone rubber or casting resin) for the second layer. This composite structure enables simultaneous achievement of penetration resistance and impulse dampening that neither material could provide alone.
2Reliability
If the protective device is made more rigid to prevent penetration, then protective effect is improved, but blunt trauma to the wearer increases
Solution Approach 1:
The protective device is divided into multiple layers: a first layer made of high-strength stab- and bullet-resistant material for penetration protection, and a second layer made of elastic material with a repeating geometric structure forming cavities for impulse dampening. This segmentation allows each layer to specialize in one function, resolving the contradiction between penetration resistance and impulse transmission.
Solution Approach 2:
The second layer uses elastic materials with specific hardness parameters (20-90 SHORE A or 0-80 SHORE D) to optimize the balance between protective effect and blunt trauma reduction. The geometric structure of cavities further modifies the mechanical response to impacts, enabling reliable protection while reducing blunt trauma.
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 device effectively reduces blunt trauma by distributing and dampening kinetic energy, providing enhanced protection while maintaining manufacturability and usability, with a design that allows for controlled air escape and energy absorption.
Implementation Method 1
a second layer (5), wherein the second layer (5) consists of or is formed from an elastic, repeating geometric structure (6)
Implementation Method 2
The geometric structure of the second layer (5) includes walls (7) that form or define cavities (8, 8'), which are hermetically sealed towards the first side (2)
Implementation Method 3
Opening sections (9) of the cavities (8, 8'), i.e. openings which basically allow gas to escape from the cavities (8, 8') towards the second side (3)
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
A protective device (1) for protection against the effects of impacts, blows, shots, or the like, which is constructed in multiple layers and has a first side (2) receiving impacts and a second side (3) opposite said first side (2), wherein - a first layer (4) which is arranged on the first side or forms the first side, wherein the first layer (4) consists of a stab- and/or bullet-resistant material, - a second layer (5), wherein the second layer (5) is formed from an elastic, repeating geometric structure (6) made of a plastic and/or a silicone rubber and/or silicone elastomers and/or casting resin, with a hardness between 20 SHORE A to 90 SHORE A and/or between 0 SHORE D to 80 SHORE D, wherein the structure (6) forms cavities (8, 8') delimited by walls (7), which are hermetically sealed towards the first side and open towards the second side and have opening sections (9) of the cavities (8,8'), - a third layer (10) which is arranged on the second side or forms this and is arranged on the second layer (5) and at least temporarily closes the cavities (8, 8') at the opening sections (9) or at least temporarily reduces a degree of opening of the opening sections (9).