Parallel Wire Conductor for Uniform Heating in Composite Structures
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Solution Overview
Problem
Conventional heating equipment for composite structures lacks the ability to maintain uniform temperature across rework areas, fails to compensate for heat sinks, and is prone to overheating or underheating, while also experiencing unwanted induction effects from high-frequency electric currents.
Innovation Solution
A heating blanket system utilizing a parallel configured wire conductor that generates a magnetic field with alternating current, featuring multiple layers of parallel wire conductors making 180-degree turns, and an array of susceptor wires with different Curie temperatures to ensure uniform heat distribution and temperature regulation across a broad range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional resistive heating blankets are used, then heating function is provided, but uniform temperature distribution cannot be maintained across the rework area
Solution Approach 1:
The heating blanket is divided into multiple independent heating zones, each controlled by separate susceptor wires with different Curie temperatures. This segmentation allows different regions to be heated to different temperatures independently, achieving uniform overall temperature distribution while compensating for local heat sinks.
Solution Approach 2:
Different susceptor wires are assigned different Curie temperatures to create local quality variations. This allows specific areas with heat sinks to receive more heat while other areas receive less, achieving uniform temperature distribution across the entire rework area.
2Temperature
If conventional heating blankets are used, then heating function is provided, but heat sinks cannot be compensated
Solution Approach 1:
The system uses susceptor wires with different Curie temperatures to provide localized heating adjustments. Areas with heat sinks are equipped with susceptor wires having lower Curie temperatures that provide more heat, while areas without heat sinks use susceptor wires with higher Curie temperatures, achieving compensation for heat sinks.
Solution Approach 2:
The system changes the Curie temperature parameter of susceptor wires to adapt to different thermal conditions. By selecting susceptor wires with appropriate Curie temperatures for different locations, the system adapts to heat sinks and thermal variations across the rework area.
3Temperature
If conventional heating blankets are used, then heating function is provided, but overheating or underheating occurs
Solution Approach 1:
Different susceptor wires are assigned different Curie temperatures to prevent overheating or underheating in specific areas. This local quality approach ensures each region receives appropriate heat levels, preventing temperature extremes.
Solution Approach 2:
The system uses the Curie temperature characteristic as a natural feedback mechanism. When a susceptor wire reaches its Curie temperature, its magnetic properties change, automatically reducing heat generation and preventing overheating without external control.
4Productivity
If high frequency electric currents are used, then heating efficiency is improved, but unwanted induction effects are generated
Solution Approach 1:
The system converts the harmful induction effects into beneficial heating. By using high frequency alternating current through the conductor, unwanted induction effects in nearby conductive materials are transformed into useful heating of the susceptor wires, which then provide controlled heat to the rework area.
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 system effectively maintains uniform temperature across composite structures, compensates for heat sinks, and reduces unwanted induction effects, providing consistent heat application from 150° F to 350° F while minimizing overheating or underheating.
Implementation Method 1
a wire conductor for receiving alternating current and generating a magnetic field in response thereto
Implementation Method 2
generating a magnetic field with alternating current, featuring multiple layers of parallel wire conductors
Implementation Method 3
an array of susceptor wires with different Curie temperatures to ensure uniform heat distribution and temperature regulation
Implementation Method 4
providing consistent heat application from 150° F to 350° F while minimizing overheating or underheating
Data Source
AI summary
A wire conductor for receiving alternating current and generating a magnetic field in response thereto. The wire conductor comprises a plurality of wire conductors in a parallel configured circuit extending between a first side of the wire conductor towards a second side of the wire conductor. A first layer of the plurality of wire conductors running in parallel from a first edge of the wire conductor to a second edge of the wire conductor. A second layer of parallel wire conductors residing above the first layer of the plurality of wire conductors, the second layer of parallel wire conductors running in parallel from the first edge of the wire conductor to the second edge of the wire conductor. The first layer of parallel wire conductors make a 180 degree turn along the first edge of the wire conductor. The first layer of parallel wire conductors make the 180 degree turn along the first edge of the wire conductor by first turning 90 degrees towards the second side of the parallel wire conductor. The first layer of parallel wire conductors make the 180 degree turn along the first edge of the wire conductor by first turning 90 degrees towards the second side of the parallel wire conductor, and then by turning 90 degrees towards the second edge of the parallel wire conductor.