Conductive Jig for Induction Heating Unidirectional Carbon Fiber Composites
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Solution Overview
Problem
Conventional high-frequency heating devices struggle to properly heat composite materials without conductive reinforcement, particularly unidirectional carbon fiber composites, as they fail to form a conductive path for induction heating.
Innovation Solution
A composite material forming device and method that uses a conductive conduction jig to form a closed loop with reinforced fibers, allowing an electric current to flow and heat the composite material, even when the fibers are oriented in a single direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If induction heating is used to heat unidirectional carbon fiber composite material, then heating efficiency is improved, but the ability to form a conductive path deteriorates because all carbon fibers run in a single direction
Solution Approach 1:
A conductive sheet is introduced as an intermediary element to bridge the gap between unidirectional carbon fibers and induction heating requirements. The conductive sheet is placed in contact with the composite material surface, providing an external conductive path that enables induction heating to occur effectively even though the internal fiber structure cannot form a closed loop by itself
Solution Approach 2:
The solution transitions from relying solely on the one-dimensional fiber orientation within the composite material to utilizing a two-dimensional conductive sheet placed on the surface. This dimensional expansion allows the conductive path to form in a different plane, bypassing the limitation of unidirectional fiber alignment
2Temperature
If high-frequency waves are applied to heat composite material with conductive reinforcement, then heating capability is improved, but applicability to composite materials without reinforcement deteriorates
Solution Approach 1:
The conductive sheet serves multiple functions: it acts as a conductive path for induction heating, a heat transfer medium to distribute thermal energy across the composite surface, and a universal interface that works with both reinforced and unreinforced composite materials. This multi-functionality allows the same heating system to handle various composite material types effectively
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
Enables effective heating and curing of unidirectional composite materials by forming a closed loop with the conduction jig and electric current generating unit, ensuring uniform heating and resin curing.
Implementation Method 1
generating an electric current in the conduction jig by the electric current generating unit to heat the reinforced fibers constituting the closed loop
Implementation Method 2
a composite material forming device and method that uses a conductive conduction jig to form a closed loop with reinforced fibers, allowing an electric current to flow and heat the composite material
Data Source
AI summary
A composite material forming device forms a composite material including a resin and reinforced fibers having electrical conductivity. The composite material forming device includes: a conduction jig having electrical conductivity, the conduction jig being to be placed on a surface of the composite material so as to make a bridge between both end portions of the reinforced fibers in a fiber direction; and an electric current generating unit that generates an electric current in the conduction jig. The conduction jig placed on the surface of the composite material and the reinforced fibers form a closed loop through which the electric current flows so that the closed loop intersects the surface of the composite material.