Composite Bulletproof Shield with Carbon Fiber and UHMWPE
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Solution Overview
Problem
Existing bulletproof shields are large, heavy, and impractical for the general public to carry due to their size and weight, making them difficult to transport, store, and use effectively.
Innovation Solution
A lightweight bulletproof shield comprising a panel with a front side made of raw carbon fiber bonded with epoxy resin and a back side with extended chain polyethylene fiber material, coupled with at least four layers of ultra-high-molecular-weight-polyethylene material for enhanced protection and portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional bulletproof shields are used to provide protection against high-velocity projectiles, then protection effectiveness is improved, but weight increases to 60.0 pounds or more
Solution Approach 1:
The shield employs a composite structure combining multiple materials with complementary properties: ultra-high-molecular-weight-polyethylene layers provide ballistic resistance, carbon fiber reinforces structural integrity, and epoxy resin bonds layers together. This composite approach achieves effective protection while significantly reducing weight compared to traditional homogeneous materials.
Solution Approach 2:
The shield is divided into multiple functional layers, each performing a specific protective function. The at least four layers of ultra-high-molecular-weight-polyethylene material are segmented to provide progressive resistance against projectiles, with each layer contributing to overall protection while distributing the weight burden.
2Reliability
If traditional bulletproof shields are used to ensure protection, then protection effectiveness is improved, but size increases making them difficult to transport and store
Solution Approach 1:
The shield utilizes thin-film construction with the at least four layers of ultra-high-molecular-weight-polyethylene material providing protection in a compact form factor. This thin-film approach maintains protection effectiveness while dramatically reducing the shield's overall size, making it portable and easy to store.
3Reliability
If traditional bulletproof shields are used to provide protection, then protection effectiveness is improved, but ease of operation deteriorates due to heavy weight
Solution Approach 1:
The shield's weight parameter is changed from traditional heavy materials to lightweight composite materials. The specific weight range of 4.5 to 7.5 pounds represents a fundamental parameter change that transforms the shield from an immobile barrier into a portable protective device that can be easily carried and deployed.
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 shield provides effective protection against high-velocity projectiles while being significantly lighter, weighing between 4.5 pounds and 7.5 pounds, making it easier to transport and use by the general public.
Implementation Method 1
The extended chain polyethylene fiber material is configured to entangle a projectille being shot at the front side of the panel thereby reducing a force of an impact of the projectille
Implementation Method 2
The raw carbon fiber material is configured to exert a force toward the projectille thereby inhibiting the progression of the projectille through the panel
Implementation Method 3
The front side comprises a raw carbon fiber material being bonded with an epoxy resin
Data Source
AI summary
A bulletproof shielding devices and methods for protecting a user from high velocity projectiles such as bullets includes a panel having a front side and a back side. The front side is a raw carbon fiber material bonded with an epoxy resin. The back side is an extended chain polyethylene fiber material blended with the raw carbon fiber material. A bullet resistant material is positioned between the front side and the back side. The bullet resistant material includes at least four layers of an ultra-high-molecular-weight-polyethylene material. The extended chain polyethylene fiber material entangles a projectile being shot at the front side, reducing a force of an impact of the projectile and facilitating the bullet resistant material in stopping the projectile. The raw carbon fiber material exerts a force toward the projectile thereby inhibiting the progression of the projectile. The panel has a weight between 4.5 pounds and 7.5 pounds.