Fence Panel Reinforcing Members Hardness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High security fences made of high density mesh material can be easily penetrated by intruders using angle grinders, as the metallic rods can be cut quickly, compromising the fence's integrity.
Innovation Solution
A fence panel design incorporating elongate reinforcing members made of materials with higher hardness than the mesh material, such as hard steel or ceramic, spaced to prevent passage even if the mesh is cut, with these members adhered to both sides of the mesh sheet to enhance resistance to cutting and high-temperature attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high density mesh material is used for the fence, then visibility and aesthetics are maintained, but the fence can be easily cut by angle grinders
Solution Approach 1:
The patent combines mesh material with reinforcing members made of different materials (metallic rods, ceramic, concrete) to create a composite structure. The mesh provides visibility and basic strength, while the embedded reinforcing members provide cutting resistance and structural integrity, preventing angle grinders from easily penetrating the fence.
2Strength
If metallic rods are used for reinforcing members, then structural strength is improved, but they can still be cut quickly by angle grinders
Solution Approach 1:
The patent changes the material parameter of the reinforcing members from soft metallic rods to hard materials such as ceramic or concrete. This parameter change increases hardness and resistance to cutting tools like angle grinders, while the tubular enclosure provides structural strength and containment for the brittle hard material.
Solution Approach 2:
The patent creates a composite structure where hard brittle material (ceramic or concrete) is enclosed within a tubular metallic enclosure. The hard material provides cutting resistance, while the metallic enclosure provides structural strength and ductility, combining the advantages of both materials.
3Object-affected harmful factors
If ultra hard material is used for reinforcing members, then cutting and flame resistance is improved, but the material is brittle and difficult to shape
Solution Approach 1:
The patent places the ultra-hard brittle material (ceramic or concrete) inside a tubular metallic enclosure. The enclosure acts as a container that protects the brittle material and provides the structural framework, while the hard material fills the interior to provide cutting and flame resistance. This nested structure solves the shaping difficulty by confining the hard material within a pre-formed tube.
Solution Approach 2:
The tubular enclosure acts as an intermediary between the ultra-hard brittle material and the external environment. It provides a protective shell that handles mechanical stresses and structural requirements, while the hard material inside handles the cutting and flame resistance functions. The enclosure mediates the incompatibility between the brittle material's properties and structural requirements.
Data Source
AI summary
A fence panel includes a sheet (12, 52) of mesh material with a first side (16) and an opposed second side (20) and, secured at least to the first side, a plurality of elongate reinforcing members (14, 18). The elongate reinforcing members (14, 18) are spaced from one another and are made from or include a material which has a hardness which is greater than the hardness of the material from which the sheet (12) is made.