Porous Composite Core Material for Air-Permeable Skin-Core Panels
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Solution Overview
Problem
Existing core materials for skin-core structural bodies face challenges in maintaining air permeability while ensuring high mechanical properties and weight reduction, with drilling and notched structures compromising structural reliability and processing workability.
Innovation Solution
A core material composed of a fiber-reinforced composite with a porous structural portion at the cell wall, allowing air permeability and enhanced bonding with the skin material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If holes are drilled in the cell wall to provide air permeability, then air permeability is improved, but the strength of the core material decreases
Solution Approach 1:
The patent applies porous materials by forming a porous structure directly within the cell wall of the core material. Instead of drilling holes through the cell wall, the invention creates a porous layer that allows air permeability while maintaining the structural integrity and strength of the cell wall. This resolves the contradiction by providing air permeability through material structure rather than geometric modification.
2Reliability
If a notched structure is formed in the open end portion of the cell wall to provide air permeability, then air permeability is improved, but the bonding property with skin material decreases
Solution Approach 1:
The patent applies porous materials by forming a porous structure directly within the cell wall of the core material. Instead of drilling holes through the cell wall, the invention creates a porous layer that allows air permeability while maintaining the structural integrity and strength of the cell wall. This resolves the contradiction by providing air permeability through material structure rather than geometric modification.
3Reliability
If drilling is performed on fiber-reinforced plastic cell walls, then air permeability is achieved, but processing workability deteriorates due to unstable drilling process
Solution Approach 1:
The patent applies porous materials by forming a porous structure directly within the cell wall of the core material. Instead of drilling holes through the cell wall, the invention creates a porous layer that allows air permeability while maintaining the structural integrity and strength of the cell wall. This resolves the contradiction by providing air permeability through material structure rather than geometric modification.
4Weight of moving object
If the cell wall is made thinner to reduce weight, then weight reduction is achieved, but mechanical properties deteriorate
Solution Approach 1:
The patent applies composite materials by combining a porous layer with the cell wall structure. The porous layer is integrated into the cell wall to create a composite structure that maintains mechanical strength while enabling air permeability. This allows the cell wall to remain thin for weight reduction without sacrificing mechanical properties, as the porous composite structure provides both strength and permeability functions.
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 core material achieves both weight reduction and mechanical properties, with improved air permeability, bonding strength, and impact resistance, while maintaining structural integrity.
Implementation Method 1
it is often required to have an air permeability, in addition to a lightweight and good mechanical properties
Data Source
AI summary
A core material has a structure including a collective body of hollow columnar cells compartmentally formed by a cell wall. The cell wall includes a fiber-reinforced composite material including a fiber (Cf) and a resin (Cr), and at least a part of the cell wall is a porous structural portion composed of an aggregate of the fiber (Cf) covered by the resin (Cr).