Composite Curing Container Using Expandable Pressure Medium
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Solution Overview
Problem
The use of industrial autoclaves for curing composite materials leads to bottlenecks in manufacturing due to throughput dependency and the need for transporting materials, resulting in high energy costs and space requirements.
Innovation Solution
A system utilizing a constraining container with an expandable medium that applies positive pressure for curing composite structures, allowing for localized or full curing without the need for autoclaves, using expandable materials and controlled heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an industrial autoclave is used for curing composite materials, then the composite structure can be cured under controlled temperature and pressure conditions, but the manufacturing throughput is limited and equipment requirements become large
Solution Approach 1:
The patent divides the curing process into multiple stages: initial curing in a conventional oven at lower pressure, followed by final curing in an autoclave only if needed. This segmentation allows most curing to occur outside the autoclave, improving throughput while maintaining quality control
Solution Approach 2:
The patent employs a dynamic pressure control system that adjusts pressure levels during different curing stages. The system transitions from atmospheric pressure during initial curing to elevated pressure during final curing, optimizing both throughput and curing quality at different process phases
2Reliability
If an industrial autoclave is used for curing composite materials, then controlled temperature and pressure can be applied, but energy costs increase and equipment footprint becomes large
Solution Approach 1:
The patent segments the curing process to perform initial curing at lower energy consumption levels in conventional ovens, reserving high-energy autoclaving for only the final stage or specific requirements, thereby reducing overall energy consumption while maintaining curing quality
Solution Approach 2:
The patent changes temperature and pressure parameters dynamically during the curing process. Initial curing occurs at lower temperatures and pressures, with final curing applying elevated parameters only when necessary, optimizing energy efficiency while ensuring quality
3Reliability
If an industrial autoclave is used for curing composite materials, then proper curing conditions can be achieved, but transportation requirements increase and manufacturing complexity rises
Solution Approach 1:
The patent segments the curing workflow into simple initial curing steps that can be performed in conventional ovens without specialized equipment, followed by optional autoclaving. This reduces the complexity barrier for initial manufacturing while maintaining the option for high-quality final curing
Solution Approach 2:
The patent employs self-service pressure control where the autoclave system automatically adjusts and maintains pressure parameters without requiring complex external control systems or manual intervention, simplifying the overall process complexity while ensuring quality
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 faster, cheaper, and more efficient curing with a smaller footprint, reducing the need for large equipment and enabling curing outside traditional manufacturing environments.
Implementation Method 1
An expandable medium is disposed within the interior volume of the cover between the cover and the composite structure and is configured to expand to a predetermined volume when a predetermined change is produced in an attribute of the expandable medium such that the expandable medium applies positive pressure to the composite structure and the cover
Data Source
AI summary
A composite curing system includes system includes a constraining container and an expandable medium. The constraining container includes a base and a cover and has an interior volume. The constraining container is configured to enclose at least a portion of a composite structure. The expandable medium configured to be disposed within the interior volume between at least a portion of the constraining container and the composite structure. The interior volume of the constraining container is selectively variable.