Interlayer Electrical Conductance via Chopped Fibers
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Solution Overview
Problem
Conventional methods for imparting electrical conductivity between adjacent fiber layers in composite structures, such as using metal elements, are less suitable due to high thermal expansion coefficients and corrosion issues, especially in applications with temperature fluctuations.
Innovation Solution
Incorporating chopped fibers, such as carbon, glass, or ceramic, into the resin layers between fiber layers to provide interlayer electrical conductance, which have a lower coefficient of thermal expansion and high corrosion resistance, thereby maintaining electrical and physical properties under varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal elements (wire grids, foil, sheets) are used between fiber layers to impart electrical conductivity, then electrical conductance is achieved, but the structure suffers from high coefficient of thermal expansion and corrosion issues
Solution Approach 1:
The invention changes the material parameters by substituting metal elements with chopped fiber reinforcements embedded in resin layers. This material substitution fundamentally alters the thermal expansion characteristics while maintaining electrical conductance through the fiber network, directly resolving the contradiction between achieving electrical conductivity and maintaining thermal stability
Solution Approach 2:
The invention employs composite materials by embedding chopped fibers within resin layers to create an interlayer composite structure. This composite approach combines the electrical conductive properties of fibers with the matrix properties of resin, achieving both electrical conductance and improved thermal expansion stability compared to pure metal elements
2Reliability
If metal elements are used between fiber layers to provide electrical conductivity, then conductance is achieved, but corrosion resistance deteriorates
Solution Approach 1:
The invention changes the material composition parameters by replacing susceptible metal elements with corrosion-resistant fiber reinforcements (such as carbon, glass, or ceramic fibers) embedded in resin. This parameter change eliminates the corrosion vulnerability inherent in metal elements while preserving the electrical conductance function through the fiber network
Solution Approach 2:
The invention uses composite material construction by embedding chopped fibers in resin layers to create a corrosion-resistant interlayer. The resin matrix protects the conductive fibers from environmental corrosion, achieving both electrical conductance and superior corrosion resistance compared to metal elements
3Reliability
If metal elements are used to impart interlayer electrical conductivity, then electrical conductance is achieved, but suitability for temperature fluctuation applications deteriorates
Solution Approach 1:
The invention changes the thermal parameters by substituting metal elements with fiber-reinforced resin composites that have lower and more stable coefficients of thermal expansion. This parameter change enables the structure to better adapt to temperature fluctuations while maintaining electrical conductance, directly improving suitability for variable temperature applications
4Stability of the object's composition
If chopped fibers are used instead of metal elements to provide interlayer electrical conductance, then thermal expansion stability improves, but manufacturing complexity increases
Solution Approach 1:
The invention merges the functions of multiple separate components into a single integrated layer. Instead of using separate metal elements between fiber layers, the chopped fibers are embedded directly into the resin layer during manufacturing, combining the structural and conductive functions into one integrated interlayer, thereby simplifying the overall manufacturing process
5Object-affected harmful factors
If chopped fibers are embedded in resin layers to provide electrical conductance, then corrosion resistance improves, but manufacturing steps increase
Solution Approach 1:
The invention applies preliminary action by embedding the chopped conductive fibers into the resin layers during the lamination process itself, before final curing. This preliminary incorporation of conductive elements into the resin matrix ensures corrosion protection from the outset and integrates the conductive function into the standard manufacturing sequence, avoiding additional post-processing steps
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 use of chopped fibers in resin layers between fiber layers enhances electrical conductivity while maintaining stability and resistance to thermal and corrosive conditions, providing a reliable path for electrical current and reducing the need for metal elements.
Implementation Method 1
a plurality of chopped fibers provided in the resin layer... to impart interlayer electrical conductance to the structure
Data Source
AI summary
A composite material structure includes a first fiber layer, a second fiber layer, a resin layer between the first fiber layer and the second fiber layer and a plurality of chopped fibers provided in the resin layer.