Composite Curing With Expandable Pressure Media Beyond Autoclaves
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Solution Overview
Problem
The use of industrial autoclaves for curing composite materials leads to bottlenecks in manufacturing due to throughput limitations and the need for transporting materials, resulting in high energy costs and extensive floor space requirements.
Innovation Solution
A system utilizing an expandable medium enclosed within a constraining container applies positive pressure to cure composite structures, eliminating the need for autoclaves by using expandable materials and controlled heating options.
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 process experiences bottlenecks due to throughput limitations and transport requirements
Solution Approach 1:
The patent divides the curing process into segments by using multiple smaller expandable media within the composite structure rather than requiring a single large autoclave. This segmentation allows parallel curing of different sections, eliminating transport bottlenecks and improving throughput while maintaining controlled curing conditions in each segment.
Solution Approach 2:
The patent extracts the pressure-generating function from the external autoclave and relocates it inside the composite structure itself through expandable media. This eliminates the need for external autoclave equipment and associated transport requirements, directly resolving the productivity bottleneck while preserving curing quality.
2Reliability
If an industrial autoclave is used for curing composite materials, then the composite structure can be cured under controlled temperature and pressure conditions, but extensive floor space and high energy costs are required
Solution Approach 1:
The patent extracts the curing function from the energy-intensive external autoclave and relocates it to compact expandable media embedded within the composite structure. This dramatically reduces the stationary equipment footprint and associated energy consumption while maintaining controlled curing conditions through the expandable media's localized pressure generation.
Solution Approach 2:
The patent creates a simplified copy of the autoclave's pressure-generating function using expandable media that can be integrated directly into the composite structure. This copy eliminates the need for large external autoclave equipment, reducing both floor space requirements and energy costs while achieving the same curing effect.
3Reliability
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 equipment requires large floor space
Solution Approach 1:
The patent extracts the pressure-generating function from the large external autoclave and relocates it to compact expandable media embedded within the composite structure itself. This eliminates the need for extensive floor space dedicated to autoclave equipment while maintaining controlled curing conditions through the integrated expandable media.
Solution Approach 2:
The patent nests the pressure-generating expandable media directly within the composite structure, eliminating the need for separate external autoclave equipment. This nesting approach consolidates the curing function into the workpiece itself, dramatically reducing the stationary equipment footprint and floor space requirements.
4Reliability
If transport of raw materials or uncured components to the autoclave is required, then curing can be performed, but bottlenecks occur in the manufacturing process
Solution Approach 1:
The patent extracts the curing function from the external autoclave and relocates it directly to the composite structure through integrated expandable media. This eliminates the need to transport uncured components to external equipment, removing transport time and associated bottlenecks from the manufacturing process while preserving curing quality.
Solution Approach 2:
The patent enables the composite structure to perform its own curing process through integrated expandable media that generate pressure internally. This self-service approach eliminates the need for external autoclave equipment and associated material transport, directly resolving the time loss and bottlenecks caused by transportation requirements.
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
This method enables faster, cheaper, and more localized curing of composite structures, reducing the need for large equipment and improving factory layout while allowing for repair or secondary curing outside a factory environment.
Implementation Method 1
The expandable medium is configured to expand such that the expandable medium applies positive pressure to the composite structure and the casting
Implementation Method 2
The casting is configured to be applied over at least a portion of a composite structure and to harden to enclose at least the portion of the composite structure
Data Source
AI summary
A composite curing system includes a casting and an expandable medium. The casting is configured to be applied over at least a portion of a composite structure and to harden to enclose at least the portion of the composite structure. The expandable medium is configured to expand such that the expandable medium applies positive pressure to the composite structure and the casting.