Layered Composite Door Construction for Lightweight Impact Protection
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Solution Overview
Problem
Conventional concrete and reinforced concrete doors are heavy, costly, bulky, and pose safety risks during transport and installation, while failing to provide adequate protection from physical impacts such as projectile penetration, explosions, and fire.
Innovation Solution
A composite door system comprising multiple layers of fiber and plastic materials, including ultra-high molecular-weight polyethylene (UHMWPE) and basalt fibers, with additional layers of porous sheets and fill materials, enclosed within a shell, providing enhanced projectile resistance and fire protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional concrete and reinforced concrete structures are used for doors, then protection from physical impacts is provided, but the doors become extremely heavy and costly to transport
Solution Approach 1:
The patent applies composite materials by combining multiple layers of different materials including fiber-reinforced polymers, metal plates, and core materials to create a door system that provides impact protection while significantly reducing weight compared to conventional concrete structures. The composite structure allows each material to contribute its specific properties for optimized performance.
Solution Approach 2:
The door is segmented into multiple functional layers including outer skin layers, core materials, and intermediate reinforcement layers. This segmentation allows the protective function to be distributed across multiple components, reducing the need for heavy monolithic concrete structures while maintaining overall protection capability.
2Strength
If conventional concrete structures are used for doors, then structural strength is provided, but the doors become undesirably bulky
Solution Approach 1:
The composite construction uses high-strength materials such as fiber-reinforced polymers and metal plates that provide equivalent structural strength to concrete but with significantly reduced volume. The layered composite structure achieves strength through material properties rather than mass.
Solution Approach 2:
The door employs local quality by concentrating reinforcement materials specifically where structural strength is needed, rather than using uniform thick concrete throughout. This allows optimized strength distribution with minimal overall volume.
3Object-affected harmful factors
If conventional concrete structures are used for doors, then protection is provided, but the doors are dangerous during manufacture, transport, and installation
Solution Approach 1:
The composite door system uses lightweight materials that are inherently safer to handle during manufacture, transport, and installation compared to heavy concrete. The reduced weight eliminates many of the safety hazards associated with moving and positioning concrete doors while maintaining protective capabilities.
Solution Approach 2:
The segmented layered structure allows for easier assembly and handling during installation, with each layer being more manageable than a single heavy concrete mass, improving safety during construction operations.
4Object-affected harmful factors
If conventional concrete structures are used for doors, then basic protection is provided, but they are deficient in providing desired protection from projectile penetration, explosions, noise, and fire
Solution Approach 1:
The composite door system addresses multiple protection requirements by incorporating materials with specific properties for different threats: ballistic-resistant layers for projectile penetration, fire-resistant materials for fire protection, and sound-damping layers for noise reduction, creating a multi-functional protective system.
Solution Approach 2:
The door design achieves multi-functionality by integrating multiple protective capabilities into a single door system that simultaneously provides protection against projectiles, explosions, noise, and fire, rather than requiring separate solutions for each threat.
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 composite door system offers lightweight, customizable, and cost-effective protection against projectiles and fire, reducing weight by up to 76% compared to conventional materials, with improved safety and reduced installation costs.
Implementation Method 1
The one or more first, second, third, and/or the like layers may be made up of the one or more fiber (e.g., fabric layers, plastic layers, or the like) and may provide protection from physical impacts
Implementation Method 2
The composite door systems may comprise one or more additional layers of a porous sheet, a fill material, or the like as will be described herein
Data Source
AI summary
Composite door systems that are configured for providing safety, security, and resistance to physical impacts or threats (natural and man-caused), and which can be utilized in barrier structures, such as for doors. The composite door systems may include one or more layers, each of which may have one or more fiber layers, such as fabric layers or plastic layers. The composite door systems may further include one or more additional layers of a sheet material, a fill material, or the like. The composite door systems are infinitely customizable and configured to be adapted to a variety of applications, and scalable levels of protection.