Composite Forming With Localized Non-Contact Heating
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Solution Overview
Problem
Conventional composite structure formation, particularly for large or complex contours, is labor-intensive and time-consuming, with manual layup of fiber plies being difficult and prone to inconsistencies.
Innovation Solution
A composite forming apparatus and system that uses an end effector with a forming feature and a non-contact heater to automate the process, applying localized heating via radiation or convection before forming the composite ply over a forming tool, enabling ply-by-ply formation and compaction to create a composite laminate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual layup of fiber plies is used, then flexibility in handling complex contours is achieved, but processing time and labor intensity increase significantly
Solution Approach 1:
The patent replaces manual mechanical layup operations with an automated robotic system that uses controlled heating and forming mechanisms. The robotic apparatus applies heat to composite plies and uses forming tools to drape them over complex contours, eliminating manual labor while maintaining precision for complex geometries.
Solution Approach 2:
The patent utilizes temperature as a critical parameter to change the physical state of composite plies. By heating the plies to specific temperatures, the material becomes more pliable and easier to form over complex contours. The automated system precisely controls heating parameters to achieve optimal formability without requiring manual intervention.
2Adaptability or versatility
If manual layup of fiber plies is used, then adaptability to complex shapes is achieved, but manufacturing precision and consistency deteriorate
Solution Approach 1:
The automated robotic system replaces manual operations with programmable control, ensuring consistent application of heating and forming parameters across all parts. This eliminates human variability and achieves uniform manufacturing precision while maintaining the ability to adapt to different complex shapes through software programming.
Solution Approach 2:
The patent incorporates feedback mechanisms that monitor the forming process in real-time, adjusting heating and forming parameters to maintain consistent quality. Sensors detect temperature, pressure, and ply position, providing feedback to the control system to ensure each ply is formed with precise consistency regardless of the complexity of the shape.
3Manufacturing precision
If localized heating is applied before forming, then adhesion and conformability improve, but device complexity increases
Solution Approach 1:
The patent combines heating, forming, and pressing operations into a single integrated robotic apparatus. The heating elements, forming tools, and pressure application mechanisms are merged into one coordinated system that performs multiple functions simultaneously, reducing overall device complexity despite the addition of localized heating capabilities.
Solution Approach 2:
The robotic apparatus is designed with multi-functional components that can perform heating, forming, and pressing operations. The same robotic end-effector can apply heat, then immediately apply forming pressure, eliminating the need for separate dedicated devices for each operation and reducing overall system complexity.
4Productivity
If automated forming with heating is used, then productivity increases, but energy consumption increases
Solution Approach 1:
The patent applies localized heating only to specific regions of the composite plies that require forming, rather than heating the entire part uniformly. This focused approach reduces energy consumption by targeting only the areas where temperature increase is necessary to achieve proper conformability and adhesion during the forming process.
Solution Approach 2:
The heating process is applied periodically and intermittently during the forming operation, heating plies only when they need to be formed and allowing cooling between operations. This periodic heating approach maintains productivity by keeping material at optimal temperature only when necessary, reducing overall energy consumption compared to continuous heating.
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
Reduces processing time, labor, and human error, while improving adhesion and conformability of composite plies to complex shapes, facilitating the fabrication of large and complex composite structures with reduced buckling and wrinkling.
Implementation Method 1
applying localized heating via radiation or convection before forming the composite ply
Implementation Method 2
applying localized heating via radiation or convection before forming the composite ply
Data Source
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AI summary
A composite forming apparatus includes an end effector, a forming feature, and a non-contact heater. The forming feature is coupled to the end effector. The end effector moves the forming feature relative to a composite ply to form the composite ply over a forming tool or a prior formed composite ply. The non-contact heater heats to a portion of the composite ply before the portion of the composite ply is formed over the forming tool or the prior formed composite ply.